Mazda 3 Workshop Manual

Type
Workshop Manual
Mazda 3 Workshop Manual - BRAKES
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Mazda 3 Workshop Manual –
BRAKES + DTC + Wiring
Diagrams
Contents
Mazda 3 Workshop Manual – BRAKES + DTC + Wiring Diagrams ................................................................. 1
ON-BOARD DIAGNOSTIC[ABS] ...................................................................................................................... 8
ABS SYSTEM WIRING DIAGRAM .......................................................................................................... 8
ON-BOARD DIAGNOSIS [ABS] ............................................................................................................... 8
On-Board Diagnostic (OBD) Test Description ................................................................................... 8
Read/clear diagnostic results ............................................................................................................ 9
PID/Data monitor and record ............................................................................................................ 9
Active command modes .................................................................................................................... 9
Reading DTCs Procedure ..................................................................................................................... 9
Clearing DTCs Procedures ................................................................................................................... 9
PID/Data Monitor and Record Procedure ........................................................................................... 9
Active Command Modes Procedure .................................................................................................. 10
DTC Table ............................................................................................................................................. 10
PID/DATA Monitor Table ..................................................................................................................... 11
Active Command Modes Table .......................................................................................................... 12
DTC B1317, B1318 [ABS] ....................................................................................................................... 12
DTC B1342, C1267 [ABS] ....................................................................................................................... 15
DTC C1095 [ABS] .................................................................................................................................... 15
DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS] ................................... 17
DTC C1145, C1155, C1165, C1175 [ABS] .......................................................................................... 21
DTC C1446 [ABS] .................................................................................................................................... 24
DTC U1900, U2012, U2523 [ABS] ........................................................................................................ 27
Diagnostic procedure ........................................................................................................................... 27
ON-BOARD DIAGNOSTIC [DYNAMIC STABILITY CONTROL] ......................................................................... 27
DYNAMIC STABILITY CONTROL WIRING DIAGRAM ..................................................................... 27
ON-BOARD DIAGNOSIS [DSC (DYNAMIC STABILITY CONTROL)] ............................................ 28
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On-Board Diagnostic (OBD) Test Description ................................................................................. 28
Read/clear diagnostic results .......................................................................................................... 29
PID/Data monitor and record .......................................................................................................... 29
Active command modes .................................................................................................................. 29
Reading DTCs Procedure ................................................................................................................... 29
Clearing DTCs Procedures ................................................................................................................. 29
PID/Data Monitor and Record Procedure ......................................................................................... 29
Active Command Modes Procedure .................................................................................................. 30
DTC Table ............................................................................................................................................. 30
PID/DATA Monitor Table ..................................................................................................................... 32
Active Command Modes Table .......................................................................................................... 34
DTC B1317, B1318 [DSC] ...................................................................................................................... 34
DTC B1342, C1267, C1730 [DSC] ........................................................................................................ 37
DTC B2141 [DSC] .................................................................................................................................... 38
DTC B2741 [DSC] .................................................................................................................................... 39
DTC C1093 [DSC] .................................................................................................................................... 39
DTC C1095 [DSC] .................................................................................................................................... 41
DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC] .................................. 43
DTC C1145, C1155, C1165, C1175 [DSC] .......................................................................................... 46
DTC C1277, C1295, C1306, C1307 [DSC] .......................................................................................... 49
DTC C1279, C1280, C1281, C1282, C2778 [DSC] ............................................................................ 51
DTC C1288, C1440 [DSC] ...................................................................................................................... 53
DTC C1446 [DSC] .................................................................................................................................... 54
DTC C1470, C1994 [DSC] ...................................................................................................................... 57
DTC C2785 [DSC] .................................................................................................................................... 57
DTC U1900, U2012, U2202, U2523 [DSC] .......................................................................................... 58
DTC U1901, U2527 [DSC] ...................................................................................................................... 58
SYMPTOM TROUBLESHOOTING .................................................................................................................. 60
SYSTEM WIRING DIAGRAM ................................................................................................................. 60
Vehicles with ABS ................................................................................................................................ 61
Vehicles with DSC ................................................................................................................................ 62
FOREWORD ............................................................................................................................................. 62
PRECAUTION ........................................................................................................................................... 62
Vehicles with ABS ................................................................................................................................ 63
Vehicles with DSC ................................................................................................................................ 64
Intermittent Concern Troubleshooting ............................................................................................... 66
Vibration method ............................................................................................................................... 66
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Inspection method for switch connectors or wiring harnesses .................................................. 66
Inspection method for sensor connectors or wiring harnesses ................................................. 67
Inspection method for sensors ....................................................................................................... 67
Malfunction data monitor method ................................................................................................... 68
Connector terminal inspection method .......................................................................................... 68
SYMPTOM TROUBLESHOOTING ....................................................................................................... 68
NO.1 NEITHER ABS WARNING LIGHT NOR BRAKE SYSTEM WARNING LIGHT
ILLUMINATE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION .................. 71
NO.2 ABS WARNING LIGHT DOES NOT ILLUMINATE WHEN THE IGNITION SWITCH IS
TURNED TO THE ON POSITION ......................................................................................................... 73
NO.3 BRAKE SYSTEM WARNING LIGHT DOES NOT ILLUMINATE WHEN THE IGNITION
SWITCH IS TURNED TO THE ON POSITION ................................................................................... 73
NO.4 BOTH ABS WARNING LIGHT AND BRAKE SYSTEM WARNING LIGHT STAY ON 4 S
OR MORE WHEN THE IGNITION SWITCH IS TURNED TO THE ON POSITION ...................... 73
NO.5 ABS WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION SWITCH IS
TURNED TO THE ON POSITION ......................................................................................................... 76
NO.6 BRAKE SYSTEM WARNING LIGHT STAYS ON 4 S OR MORE WHEN THE IGNITION
SWITCH IS TURNED TO THE ON POSITION (PARKING BRAKE IS RELEASED) .................... 78
NO.7 THERE IS MALFUNCTION IN THE SYSTEM EVEN THOUGH ABS WARNING LIGHT,
BRAKE SYSTEM WARNING LIGHT, DO NOT ILLUMINATE .......................................................... 79
NO.8 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WHEN THE IGNITION
SWITCH IS TURNED TO THE ON POSITION: (ABS WARNING LIGHT, BRAKE SYSTEM
WARNING LIGHT, DSC INDICATOR LIGHT AND/OR DSC OFF LIGHT) ..................................... 80
NO.9 ANY OF THE FOLLOWING LIGHTS REMAIN ON: (ABS WARNING LIGHT, BRAKE
SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND/OR DSC OFF LIGHT) ................... 81
NO.10 THERE IS A MALFUNCTION IN THE SYSTEM EVEN THOUGH ABS WARNING
LIGHT, BRAKE SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND DSC OFF LIGHT
DO NOT ILLUMINATE ............................................................................................................................. 83
NO.11 ABS OR TCS*1 OPERATES FREQUENTLY/TCS DOES NOT WORK CORRECTLY *1:
DSC SYSTEM FUNCTION CONTAINs TRACTION CONTROL FUNCTION, DSC INDICATOR
LIGHT GOES ON AND OUT WHILE DSC OPERATES .................................................................... 83
NO.12 DSC*2 OPERATES FREQUENTLY/DSC DOES NOT WORK CORRECTLY *2: DSC
INDICATOR LIGHT GOES ON AND OUT WHILE DSC OPERATES ............................................. 84
GENERAL PROCEDURES ............................................................................................................................... 85
GENERAL PROCEDURES (BRAKE) ................................................................................................... 85
Wheel and Tire Installation.................................................................................................................. 85
Brake Lines Disconnection.................................................................................................................. 85
Brake Pipe Flare Nut Tightening ........................................................................................................ 86
Connector Disconnection .................................................................................................................... 86
ABS/DSC Related Parts ...................................................................................................................... 86
DSC Related Part Sensor Initialization Procedure .......................................................................... 86
CONVENTIONAL BRAKE SYSTEM ................................................................................................................. 86
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CONVENTIONAL BRAKE SYSTEM LOCATION INDEX .................................................................. 86
AIR BLEEDING ......................................................................................................................................... 88
VACUUM LINE INSPECTION ................................................................................................................ 89
VACUUM HOSE REMOVAL/INSTALLATION ..................................................................................... 90
BRAKE PEDAL INSPECTION................................................................................................................ 91
Pedal Height Inspection ....................................................................................................................... 92
Pedal Play Inspection .......................................................................................................................... 92
Pedal-to-floor Clearance Inspection .................................................................................................. 92
BRAKE PEDAL REMOVAL/INSTALLATION ....................................................................................... 93
Brake Pedal Removal Note ................................................................................................................. 94
Joint Pin Installation Note .................................................................................................................... 95
Brake Switch Installation Note ............................................................................................................ 95
BRAKE SWITCH INSPECTION ............................................................................................................. 95
MASTER CYLINDER REMOVAL/INSTALLATION ............................................................................. 96
Reserve Hose Removal Note ............................................................................................................. 97
Reserve Hose Installation Note .......................................................................................................... 97
BRAKE FLUID LEVEL SENSOR INSPECTION .................................................................................. 98
POWER BRAKE UNIT INSPECTION ................................................................................................... 98
Without Using SST ............................................................................................................................... 98
Operation inspection ........................................................................................................................ 98
Vacuum function inspection ............................................................................................................ 99
Vacuum loss function inspection .................................................................................................... 99
Using SST .............................................................................................................................................. 99
Pre-inspection preparation .............................................................................................................. 99
Vacuum loss inspection ................................................................................................................. 100
Lack of hydraulic pressure inspection ......................................................................................... 100
Hydraulic pressure inspection ...................................................................................................... 100
POWER BRAKE UNIT REMOVAL/INSTALLATION ......................................................................... 101
Brake Pedal Component Removal Note ......................................................................................... 102
FRONT BRAKE (DISC) INSPECTION ................................................................................................ 102
Brake Judder Repair Hints ................................................................................................................ 102
Description ....................................................................................................................................... 102
Steering wheel vibration ................................................................................................................ 102
Floor vibration ................................................................................................................................. 102
Brake pedal vibration ..................................................................................................................... 102
Due to an excessive runout (side-to-side wobble) of the disc plate, the thickness of the disc
plate is uneven. ............................................................................................................................... 102
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The disc plate is deformed by heat. ............................................................................................. 103
Due to corrosion, the thickness and friction coefficient of the disc plate change. ................ 103
Inspection and repair procedure .................................................................................................. 103
Lateral runout inspection ............................................................................................................... 103
Thickness variation inspection ...................................................................................................... 104
Disc Plate Thickness Inspection ...................................................................................................... 104
Disc Pad Thickness Inspection ........................................................................................................ 105
FRONT BRAKE (DISC) REMOVAL/INSTALLATION ....................................................................... 105
Disc Plate Removal Note .................................................................................................................. 107
Disc Plate Installation Note ............................................................................................................... 107
Disc Pad Installation Note ................................................................................................................. 107
Brake Hose Installation Note ............................................................................................................ 107
DISC PAD (FRONT) REPLACEMENT ............................................................................................... 108
CALIPER (FRONT) DISASSEMBLY/ASSEMBLY ............................................................................ 109
Piston Disassembly Note .................................................................................................................. 110
Dust Seal Assembly Note.................................................................................................................. 110
Piston Assembly Note ........................................................................................................................ 110
REAR BRAKE (DISC) INSPECTION .................................................................................................. 111
Brake Judder Repair Hints ................................................................................................................ 111
Description ....................................................................................................................................... 111
Steering wheel vibration ................................................................................................................ 111
Floor vibration ................................................................................................................................. 112
Brake pedal vibration ..................................................................................................................... 112
Due to an excessive runout (side-to-side wobble) of the disc plate, the thickness of the disc
plate is uneven. ............................................................................................................................... 112
The disc plate is deformed by heat. ............................................................................................. 112
Due to corrosion, the thickness and friction coefficient of the disc plate change. ................ 112
Inspection and repair procedure .................................................................................................. 113
Lateral runout inspection ............................................................................................................... 113
Thickness variation inspection ...................................................................................................... 114
Disc Plate Thickness Inspection ...................................................................................................... 114
Disc Pad Thickness Inspection ........................................................................................................ 114
REAR BRAKE (DISC) REMOVAL/INSTALLATION .......................................................................... 115
Disc Pad Removal Note .................................................................................................................... 117
Disc Plate Removal Note .................................................................................................................. 117
Disc Plate Installation Note ............................................................................................................... 117
Disc Pad Installation Note ................................................................................................................. 118
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DISC PAD (REAR) REPLACEMENT .................................................................................................. 118
CALIPER (REAR) DISASSEMBLY/ASSEMBLY ............................................................................... 119
Dust Seal Assembly Note.................................................................................................................. 120
PARKING BRAKE SYSTEM ........................................................................................................................... 121
PARKING BRAKE SYSTEM LOCATION INDEX .............................................................................. 121
PARKING BRAKE LEVER INSPECTION .......................................................................................... 122
Stroke Inspection ................................................................................................................................ 122
PARKING BRAKE LEVER ADJUSTMENT ........................................................................................ 123
PARKING BRAKE LEVER REMOVAL/INSTALLATION .................................................................. 123
Rear Parking Brake Cable Installation Note ................................................................................... 124
Front Parking Brake Cable Installation Note .................................................................................. 125
PARKING BRAKE SWITCH INSPECTION ........................................................................................ 125
ANTILOCK BRAKE SYSTEM ......................................................................................................................... 126
ABS LOCATION INDEX ........................................................................................................................ 126
ABS SYSTEM INSPECTION ................................................................................................................ 126
ABS Hydraulic Unit On-vehicle Inspection ..................................................................................... 127
Preparation ...................................................................................................................................... 127
Operation inspection ...................................................................................................................... 127
ABS HU/CM REMOVAL/INSTALLATION .......................................................................................... 128
Connector Removal Note .................................................................................................................. 129
Brake Pipe Removal Note ................................................................................................................. 130
ABS HU/CM Component, Bracket Removal Note ......................................................................... 130
Brake Pipe Installation Note.............................................................................................................. 130
Connector Installation Note ............................................................................................................... 131
ABS HU/CM INSPECTION ................................................................................................................... 131
Terminal Voltage Table (Reference) ............................................................................................... 131
FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION .......................................... 133
FRONT ABS WHEEL-SPEED SENSOR INSPECTION .................................................................. 134
Installation Visual Inspection ............................................................................................................ 134
Clearance Inspection ......................................................................................................................... 134
Sensor Output Value Inspection ...................................................................................................... 135
REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION ............................................ 135
ABS Hole Cover Removal Note ....................................................................................................... 136
Rear ABS Wheel-speed Sensor Wiring Harness Installation Note ............................................. 137
ABS Hole Cover Installation Note .................................................................................................... 137
REAR ABS WHEEL-SPEED SENSOR INSPECTION ..................................................................... 137
Installation Visual Inspection ............................................................................................................ 138
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Clearance Inspection ......................................................................................................................... 138
Sensor Output Value Inspection ...................................................................................................... 138
DYNAMIC STABILITY CONTROL.................................................................................................................. 139
DSC LOCATION INDEX........................................................................................................................ 139
DSC SYSTEM INSPECTION ............................................................................................................... 141
Preparation .......................................................................................................................................... 141
ABS Control Inspection ..................................................................................................................... 141
DSC Control Inspection ..................................................................................................................... 143
DSC HU/CM REMOVAL/INSTALLATION .......................................................................................... 145
Brake Pipe Removal Note ................................................................................................................. 146
DSC HU/CM, Bracket Removal Note .............................................................................................. 147
Brake Pipe Installation Note.............................................................................................................. 147
DSC HU/CM INSPECTION ................................................................................................................... 147
Terminal Voltage Table (Reference) ............................................................................................... 148
FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION .......................................... 151
FRONT ABS WHEEL-SPEED SENSOR INSPECTION .................................................................. 151
REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION ............................................ 151
REAR ABS WHEEL-SPEED SENSOR INSPECTION ..................................................................... 152
COMBINED SENSOR REMOVAL/INSTALLATION ......................................................................... 152
COMBINED SENSOR INSPECTION .................................................................................................. 153
COMBINED SENSOR INITIALIZATION PROCEDURE .................................................................. 154
BRAKE FLUID PRESSURE SENSOR INSPECTION ...................................................................... 155
BRAKE FLUID PRESSURE SENSOR INITIALIZATION PROCEDURE ....................................... 156
STEERING ANGLE SENSOR REMOVAL/INSTALLATION ............................................................ 156
STEERING ANGLE SENSOR INSPECTION .................................................................................... 156
DSC OFF SWITCH REMOVAL/INSTALLATION .............................................................................. 158
DSC OFF SWITCH INSPECTION ....................................................................................................... 158
TECHNICAL DATA ....................................................................................................................................... 159
BRAKES................................................................................................................................................... 159
SERVICE TOOLS .......................................................................................................................................... 160
BRAKES SST .......................................................................................................................................... 160
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ON-BOARD DIAGNOSTIC[ABS]
ABS SYSTEM WIRING DIAGRAM
B3E040243000W01
ON-BOARD DIAGNOSIS [ABS]
B3E040243000W02
On-Board Diagnostic (OBD) Test Description
• The OBD test inspects the integrity and function of the ABS and outputs the results when requested by
the specific tests.
• On-board diagnostic test also:
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- Provides a quick inspection of the ABS usually performed at the start of each diagnostic
procedure.
- Provides verification after repairs to ensure that no other faults occurred during service.
• The OBD test is divided into 3 tests:
- Read/clear diagnostic results, PID monitor and record and active command modes.
Read/clear diagnostic results
• This function allows you to read or clear DTCs in the ABS HU/CM memory.
PID/Data monitor and record
• This function allows you to access certain data values, input signals, calculated values, and
system status information.
Active command modes
• This function allows you to control devices through the WDS or equivalent.
Reading DTCs Procedure
1. Connect WDS or equivalent to the vehicle DLC-2 connector.
2. Retrieve DTC using WDS or equivalent.
Clearing DTCs Procedures
1. After repairs have been made, perform the DTCs reading procedure.
2. Erase DTC using WDS or equivalent.
3. Ensure that the customer's concern has been resolved.
PID/Data Monitor and Record Procedure
1. Connect WDS or equivalent to the vehicle DLC-2 connector.
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2. Access and monitor PIDs using WDS or equivalent.
Active Command Modes Procedure
1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector.
2. Turn the ignition switch to the ON position (engine off) or start the engine.
3. Activate active command modes using WDS or equivalent.
DTC Table
DTC
System malfunction location
Page
WDS or
equivalent
B1317
Power supply system
(See DTC B1317, B1318 [ABS].)
B1318
Power supply system
(See DTC B1317, B1318 [ABS].)
B1342
ABS HU/CM (internal
malfunction)
(See DTC B1342, C1267 [ABS].)
C1095
Pump motor, motor relay
(See DTC C1095 [ABS].)
C1141
LF ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1142
RF ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
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C1143
LR ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1144
RR ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1145
RF ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1155
LF ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1165
RR ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1175
LR ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1233
LF ABS wheel-speed
sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1234
RF ABS wheel-speed
sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1235
RR ABS wheel-speed
sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1236
LR ABS wheel-speed
sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233,
C1234, C1235, C1236 [ABS].)
C1267
ABS HU/CM (internal
malfunction)
(See DTC B1342, C1267 [ABS].)
C1446
Brake switch
(See DTC C1446 [ABS].)
U1900
CAN line
(See MULTIPLEX COMMUNICATION SYSTEM.)
U2012
CAN line
(See MULTIPLEX COMMUNICATION SYSTEM.)
U2523
CAN line
(See MULTIPLEX COMMUNICATION SYSTEM.)
PID/DATA Monitor Table
PID name (definition)
Unit/Condition
Action
ABS HU/CM
terminal
BOO_ABS
(Brake pedal switch
input)
On/Off
Inspect the brake
switch.
-
CCNTABS
(Number of continuous
codes)
-
Perform the DTC
inspection.
-
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LF_WSPD
(Left front ABS wheel-
speed sensor input)
km/h, mph
Inspect the ABS
wheel-speed sensor.
I, K
LR_WSPD
(Left rear ABS wheel-
speed sensor input)
km/h, mph
Inspect the ABS
wheel-speed sensor.
U, W
RF_WSPD
(Right front ABS wheel-
speed sensor input)
km/h, mph
Inspect the ABS
wheel-speed sensor.
Q, O
RR_WSPD
(Right rear ABS wheel-
speed sensor input)
km/h, mph
Inspect the ABS
wheel-speed sensor.
E, C
Active Command Modes Table
Command name
Output part
Operation
Operating condition
LF_INLET
LF inlet solenoid valve
On/Off
Ignition switch at ON
LF_OUTLET
LF outlet solenoid valve
LR_INLET
LR inlet solenoid valve
LR_OUTLET
LR outlet solenoid valve
PMP_MOTOR
Pump motor
RF_INLET
RF inlet solenoid valve
RF_OUTLET
RF outlet solenoid valve
RR_INLET
RR inlet solenoid valve
RR_OUTLET
RR outlet solenoid valve
DTC B1317, B1318 [ABS]
B3E040243000W03
DTC
B1317, B1318
Power supply system
DETECTION
CONDITION
• B1317
- High ignition voltage (16 V or more) is detected at the voltage
monitor of the solenoid valve or motor monitor.
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• B1318
- When driving the vehicle at 20 km/h {12.4 mph} or more, low
ignition voltage (10 V or less) is detected at the voltage monitor of
the solenoid valve or motor monitor.
POSSIBLE CAUSE
• ABS 1 30A/ABS 2 20A/ABS IG 10A fuse malfunction
• Open or short circuit in wiring harness between ABS HU/CM terminal N and
battery
• Open or short circuit in wiring harness between ABS HU/CM terminal Y and
battery
• Open or short circuit in wiring harness between ABS HU/CM terminal Z and
battery
• Open circuit in wiring harness between ABS HU/CM terminal B and body
ground
• Battery deterioration
• Generator malfunction
• Poor connection at connectors (female terminal)
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT BATTERY VOLTAGE
• Is the battery positive terminal voltage normal?
Yes
Inspect for normal connection of the
battery terminals.
Go to the next step.
No
Charge or replace the battery, then go to
Step 6.
(See BATTERY RECHARGING.)
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(See BATTERY
REMOVAL/INSTALLATION [Z6].)
(See BATTERY
REMOVAL/INSTALLATION [LF].)
2
INSPECT BATTERY GRAVITY
• Is battery specific gravity as specified?
Yes
Go to the next step.
No
Replace the battery, then go to Step 6.
(See BATTERY
REMOVAL/INSTALLATION [Z6].)
(See BATTERY
REMOVAL/INSTALLATION [LF].)
3
INSPECT CHARGING SYSTEM
• Are the generator and the drive belt tensions
normal?
Yes
Go to the next step.
No
Replace the generator and/or drive belt if
necessary.
(See GENERATOR
REMOVAL/INSTALLATION [Z6].)
(See GENERATOR
REMOVAL/INSTALLATION [LF].)
(See DRIVE BELT REPLACEMENT [Z6].)
(See DRIVE BELT REPLACEMENT [LF].)
Go to Step 6.
4
INSPECT ABS HU/CM POWER SUPPLY FOR
OPEN CIRCUIT
• Disconnect the ABS HU/CM connectors.
• Turn the ignition switch to the ON position.
• Measure the voltage between following
connector terminals of the ABS HU/CM (vehicle
harness-side) and body ground:
- ABS HU/CM: N-Body ground
- ABS HU/CM: Y-Body ground
- ABS HU/CM: Z-Body ground
• Is the voltage 10 V or more?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then
go to Step 6.
5
INSPECT ABS HU/CM GROUND FOR POOR
GROUND OR OPEN CIRCUIT
• Turn the ignition switch off.
• Measure the resistance between following
connector terminal of ABS HU/CM (vehicle
harness-side) and body ground:
- ABS HU/CM: B-Body ground
• Is the resistance within 0-1 ohm?
Yes
Go to the next step.
No
If there is open circuit:
• Repair or replace the wiring harness,
then go to the next step.
If resistance is not within specification:
• Repair or replace the poor ground part,
then go to the next step.
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6
VERIFY THAT THE SAME DTC IS NOT
PRESENT
• Reconnect all disconnected connectors.
• Clear the DTCs from the memory.
(See Clearing DTCs Procedures.)
• Start the engine and drive the vehicle at 10
km/h {12.4 mph} or more.
• Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the ABS
HU/CM, then go to the next step.
(See ABS HU/CM
REMOVAL/INSTALLATION)
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCS ARE
PRESENT
• Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.
DTC B1342, C1267 [ABS]
B3E040243000W04
DTC
B1342, C1267
ABS HU/CM (internal malfunction)
DETECTION
CONDITION
• The ABS HU/CM on-board diagnostic function detects control module internal
malfunction.
POSSIBLE CAUSE
• ABS HU/CM internal malfunction
Diagnostic procedure
STEP
INSPECTION
ACTION
1
VERIFY NO ABS HU/CM MALFUNCTION
• Clear the DTCs from the memory.
(See Clearing DTCs Procedures.)
• Start the engine and drive the vehicle
at 10km/h {6.2 mph} or more.
• Are the same DTCs present?
Yes
Replace the ABS HU/CM, then go to the
next step.
(See ABS HU/CM
REMOVAL/INSTALLATION.)
No
Go to the next step.
2
VERIFY THAT NO OTHER DTCS ARE
PRESENT
• Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.
DTC C1095 [ABS]
B3E040243000W05
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DTC
C1095
Pump motor, motor relay
DETECTION
CONDITION
• ABS motor monitor signal does not correspond to ABS HU/CM OFF signal.
• ABS motor monitor signal does not correspond to ABS HU/CM ON signal.
• ABS motor monitor OFF signal is input within specified time limit when
motor signal is switched from ON to OFF by ABS HU/CM.
POSSIBLE CAUSE
• ABS 1 (30 A) fuse malfunction
• Open circuit or short to ground in the wiring harness between the battery
and ABS HU/CM terminal Z
• Open circuit in the wiring harness between ABS HU/CM terminal B and
body ground
• Open or short circuit in ABS HU/CM internal motor relay, or stuck motor
relay
• Open or short circuit in ABS HU/CM internal pump motor, or frozen pump
motor
• Poor connection at connectors (female terminal)
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT ABS FUSE CONDITION
• Is the ABS fuse (ABS 1 30 A) normal?
Yes
Go to the next step.
No
Replace the ABS fuse, then go to Step 6.
2
VERIFY PUMP MOTOR OPERATION
• Turn the ignition switch off.
• Connect the WDS or equivalent to the
DLC-2.
Yes
Go to the next step.
No
Replace the ABS HU/CM, then go to Step 6.
(See ABS HU/CM
REMOVAL/INSTALLATION.)
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• Turn the ignition switch to the ON
position.
• Access PMP _MOTOR active command
modes using the WDS or equivalent.
• Does the pump motor operate?
3
INSPECT MOTOR RELAY POWER
SUPPLY FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Disconnect the ABS HU/CM connector.
• Inspect for continuity between ABS
HU/CM terminal Z and the positive battery
terminal.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go
to Step 6.
4
INSPECT MOTOR RELAY POWER
SUPPLY FOR SHORT CIRCUIT
• Inspect for continuity between ABS
HU/CM terminal Z and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness, then go
to Step 6.
No
Go to the next step.
5
INSPECT PUMP MOTOR GROUND FOR
OPEN CIRCUIT
• Inspect for continuity between ABS
HU/CM terminal B and body ground.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go
to Step 6.
6
VERIFY THAT THE SAME DTC IS NOT
PRESENT
• Reconnect all disconnected connectors.
• Clear the DTCs from the memory.
(See Clearing DTCs Procedures.)
• Start the engine and drive the vehicle
at 10 km/h {6.2 mph} or more.
• Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the ABS
HU/CM, then go to the next step.
(See ABS HU/CM
REMOVAL/INSTALLATION.)
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCS ARE
PRESENT
• Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.
DTC C1141, C1142, C1143, C1144, C1233, C1234,
C1235, C1236 [ABS]
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B3E040243000W06
Note
• When only the driving wheels are rotated while the vehicle is jacked up, DTCs C1235 and
C1236 are input to the memory.
DT
C
C1141, C1142, C1143, C1144, C1233, C1234, C1235,
C1236
ABS wheel-speed sensor/ABS sensor
rotor
DETECTION CONDITION
• C1141, C1142, C1143, C1144
- Periodic abnormality is detected in the signal wave pattern
from the ABS wheel-speed sensors.
• C1234, C1233, C1235, C1236
- Wheel speed signal is not input or extremely low wheel speed
signal is input from any of the four wheels when driving at a
vehicle speed of 10 km/h {6.2 mph} or more.
- A large, sudden change in wheel speed signal is detected.
- ABS control operates for 28 s or more.
POSSIBLE CAUSE
• ABS wheel-speed sensor malfunction
• ABS sensor rotor malfunction (foreign material adhering)
• Improper installation of ABS wheel-speed sensor and/or sensor rotor
• Excessive clearance between the ABS wheel-speed sensor and
sensor rotor
• Continuous ABS operation
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Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT PID FOR ABS WHEEL-SPEED
SENSOR OUTPUT ERROR USING WDS OR
EQUIVALENT
• Turn the ignition switch off.
• Connect the WDS or equivalent to the DLC-2.
• Select the following PIDs using the WDS or
equivalent:
LF_WSPD
LR_WSPD
RF_WSPD
RR_WSPD
• Drive the vehicle.
• Verify that the vehicle speeds detected by the
four ABS wheel-speed sensors are approximately
the same.
Yes
Go to Step 3.
No
Go to the next step.
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• Are the vehicle speeds approximately the
same?
2
INSPECT FOR SHORT TO GROUND
BETWEEN ABS WHEEL-SPEED SENSOR
CONNECTORS AND GROUND
• Disconnect the ABS wheel-speed sensor
connectors.
• Inspect for no continuity between the following
ABS wheel-speed sensor connector terminals
(vehicle harness-side) and body ground:
- ABS wheel-speed sensor (RF):
B-Body ground
- ABS wheel-speed sensor (LF):
B-Body ground
- ABS wheel-speed sensor (RR):
B-Body ground
- ABS wheel-speed sensor (LR):
B-Body ground
• Is the continuity normal?
Yes
Go to the next step.
No
Repair or replace the wiring harness,
then go to Step 6.
3
INSPECT IF MALFUNCTION OCCURRED DUE
TO IMPROPER SENSOR CLEARANCE.
• Inspect the clearance between the ABS wheel-
speed sensor and the ABS sensor rotor.
(See FRONT ABS WHEEL-SPEED SENSOR
INSPECTION.)
(See REAR ABS WHEEL-SPEED SENSOR
INSPECTION.)
• Is the clearance normal?
Clearance
Front: 2.1 mm {0.082 in} or less
Rear: 1.46 mm {0.057 in} or less
Yes
Go to the next step.
No
Replace the ABS wheel-speed sensor,
then go to Step 6.
(See FRONT ABS WHEEL-SPEED
SENSOR REMOVAL/INSTALLATION.)
(See REAR ABS WHEEL-SPEED
SENSOR REMOVAL/INSTALLATION.)
4
VISUALLY INSPECT ABS SENSOR ROTOR
FOR FOREIGN MATERIAL ADHERING OR
IMPROPER INSTALLATION
• Is the result normal?
Yes
Go to Step 6.
No
Replace the wheel hub component, then
go to Step 6.
(See WHEEL HUB, STEERING
KNUCKLE REMOVAL/INSTALLATION.)
(See WHEEL HUB COMPONENT
REMOVAL/INSTALLATION.)
5
Yes
Go to the next step.
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Mazda 3 Workshop Manual

Type
Workshop Manual

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