MAHA VCI Original Operating Instructions

Brand: MAHA

Model: VCI

Category: Networking

Type: Original Operating Instructions

MAHA VCI is a Vehicle Communication Interface device used for OBD diagnostics on vehicles (cars, LCVs, trucks and buses). It enables wireless communication with a PC via WLAN and can be operated either as a WLAN base station (access point) or as a WLAN client connected to an existing WLAN network. The MAHA VCI and MAHA Emission Software are accredited for exhaust emission test according to Guidelines 5 in Germany. Here are some of the key features and possible use cases of the MAHA VCI:

Wireless OBD diagnostics on vehicles via WLAN connection.
Can be operated as a WLAN base station (access point) or as a WLAN client.

Wireless OBD diagnostics on vehicles via WLAN connection.
Can be operated as a WLAN base station (access point) or as a WLAN client.

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MAHA VCI

Vehicle Communication Interface

Original Operating Instructions

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Contents

Description .......................................................................................................... 4

1.1 General Information .................................................................................................. 4

1.2 Overview .................................................................................................................. 4

1.3 Specifications ........................................................................................................... 5

1.4 Requirements for the Control Computer ................................................................... 5

Initial Operation .................................................................................................... 6

2.1 Noting the Serial Number ......................................................................................... 6

2.2 Connecting the Device ............................................................................................. 6

2.3 Establishing the WiFi Connection with Windows ....................................................... 6

2.4 Setting up the VCI in MAHA Emission Software Version 7.51 .................................... 9

Changing the WiFi Settings ................................................................................. 12

Resetting the WiFi Configuration to Factory Defaults ............................................ 17

LED Indicators ................................................................................................... 18

Firmware Update ............................................................................................... 19

6.1 Check and update firmware manually. .................................................................... 19

Operation .......................................................................................................... 21

7.1 OBD Diagnosis (MES 7.51) ..................................................................................... 21

7.2 OBD during Test Procedure (MES 7.51) ................................................................. 22

FAQ .................................................................................................................. 23

8.1 In MES settings: MAHA VCI not found .................................................................... 23

8.2 No communication to VCI ...................................................................................... 23

8.3 Connection with VCI established, but no ECU found or log not recognised. ............ 23

8.4 Integrate MAHA VCI into an existing network infrastructure ..................................... 23

8.5 My PC has no WLAN. ............................................................................................ 24

8.6 OBD button is not available in the main menu ......................................................... 24

8.7 VCI can no longer be found, or WLAN has been configured incorrectly. .................. 24

Recording a Diagnostic Protocol ......................................................................... 25

Network Overview .............................................................................................. 27

10.1 MAHA VCI as a WLAN base station ........................................................................ 27

10.2 MAHA VCI as a WLAN client .................................................................................. 27

Maintenance ...................................................................................................... 28

11.1 Cleaning ................................................................................................................. 28

11.2 Troubleshooting ..................................................................................................... 28

11.3 Spare Parts ............................................................................................................ 28

Disposal ............................................................................................................ 29

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Contents of the Declaration of Conformity ........................................................... 29

Company Information ......................................................................................... 30

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Description

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1.1

General Information

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The MAHA VCI and MAHA Emission Software can perform OBD diagnostics on

vehicles (cars, LCVs, trucks and buses).

Communication with the PC is wireless via WLAN. The VCI can be operated either

as a WLAN base station (access point) or as a WLAN client, connected to the

existing WLAN network.

The VCI and the PC software are accredited for exhaust emission test according

to Guidelines 5 in Germany.

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1.2

Overview

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OBD connector

Metal bracket

Function key F1

Function key F2

LED 1

LED 2

Magnetic clip for development hardware

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D F

A C E

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1.3

Specifications

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Dimensions (L x W x H) 135 x 50 x 25 mm

Operating temperature 0 °C … +50 °C

Vehicle Male OBD connector (16 pin)

Weight 110 g

Power consumption < 3.6 W

Nominal voltage + 12 V DC via male OBD con-

nector

Voltage range +7 … +30 V DC

Power consumption approx. 260 mA at 12 V supply voltage

Supported diagnostics log

ISO-

TP through CAN (ISO

15765)

WWH-OBD (ISO 27145)

SAE J1939

KWP 2000 (ISO 14230)

CARB (ISO 9141)

OBD standards

ISO 15031

SAE J1979

SAE J2012

UN/ECE R83

UN/ECE R49

WLAN

IEEE 802.11 a/b/g/n/h Dual Stream 300 MBit/s

802.11n Standard for 2.4 GHz (EU and NAR conformity)

Encryption types: WPA, WPA2/PSK

WLAN base station (factory settings), WLAN Client

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1.4

Requirements for the Control Computer

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• MAHA Emission Software (current version available on MAHA homepage)

• WiFi access

• Windows 7 operating system

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Initial Operation

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2.1

Noting the Serial Number

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2.2

Connecting the Device

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1 Connect the MAHA VCI male OBD connector (A) and the vehicle female OBD

connector. LED (F) starts flashing.

2 Establish WLAN connection with the PC (see section “WLAN connection”).

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2.3

Establishing the WiFi Connection with Windows

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1 Wait until MAHA VCI has launched and the network has been established.

2 Click on the WLAN symbol in the Windows task bar:

If the symbol is not visible, the computer is not WLAN enabled, or the network ty-

pe has been deactivated (e.g. “airline mode switch”.

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3 Select the network “MAHAVCI-serial

number”.

Tick checkbox “automatically -

establish connection”.

Press “Connect” button.

4 Enter security key (factory settings:

“haldenwang”).

5 The connection is established.

6 Since the MAHA VCI network offers

no internet connection,

the following note is acceptable:

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7 Select “Workplace network” as the place of the network under network set-

tings:

The first time, the WLAN connection is established, complete network set-up and

VCI connection may take up to one minute.

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2.4

Setting up the VCI in MAHA Emission Software Version 7.51

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1 Integrate MAHA VCI into the WLAN according to the section “Connect

devices”.

2 Start MES.

3 Press “Page Down” in the MES main menu.

4 Change to the settings menu.

5 Select “Exhaust devices settings”.

6 Press “Setup” button under “MAHA VCI”.

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7 Press “Find devices” (F6) in the following screen.

8 The search result is displayed in the status bar.

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9 The MAHA VCI found are listed. If several MAHA VCI are found, the active

device must be selected (with the noted serial number from the section “Note

serial number”).

Press “Save / Next” (F8).

10 Confirm settings with “Save / Next” (F8).

The VCI can now be used for OBD communication (e.g. for exhaust emission

tests in Germany acc. to Guidelines 5).

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Changing the WiFi Settings

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MAHA VCI can be configured via the MAHA Emission Software (MES) user

interface as either a WLAN base station (factory settings), or as a WLAN client.

Thus, the device is easy to integrate into wireless networks.

1 Call up the menu “VCI settings” (see section “Set-up VCI in MAHA Emission

Software Version 7.51”, steps 1 - 7).

2 Confirm “WLAN settings” in the list of VCI found.

3 A connection with the VCI is established, and existing WLAN settings are

readout:

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4 WLAN settings can be changed in the following screen.

a) Option 1: WLAN operating mode “access point” (= WLAN base station)

The following settings are required:

• Network name (SSID)

• Password

• Type of cryptography (open, WPA, WPA2-PSK)

• Frequency channel

• VCI IP address

(factory settings:

192.168.10.1)

• Network mask

(factory settings:

255.255.255.0)

The option “Automatically connect PC to VCI” creates a profile in Windows, i.e.

the steps from the section “Connect devices” are automatically carried out.

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b) Option 2: WLAN operating mode “Client” with automatic IP assignment

The following settings are required:

• Network name (SSID)

• Password

• Type of cryptography (open, WPA, WPA2-PSK)

• Assignment of IP address Automatic (DHCP)

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c) Option 3: WLAN operating mode “Client” with manual IP assignment

The following settings are required:

• Network name (SSID)

• Password

• Type of cryptography (open, WPA, WPA2-PSK)

• Assignment of IP address Manual

• Frequency channel

• VCI IP address

• Network mask

• Gateway (= IP address of the router)

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5 Save changes with “Save / Next” (F8) button.

6 WLAN access point: If the password differs from the standard password

“

haldenwang

”, it must be confirmed.

By selecting the option “Show password” the password can be displayed in

full.

7 WLAN client: The network must exist and be accessible. Available networks are

determined.

a) If no network with the entered name is found, an error message is issued.

b) If the network is found, the password must be confirmed.

Network login information verifications are optional. In this case, a test connection

to the network is established to verify the password. The existing network is then

reconnected.

8 The network settings are transferred from the MES to the MAHA VCI. The

MAHA VCI performs a restart.

9 If network settings are changed, WLAN setting in Windows may require

adjustment (See section “Set-up WLAN connection with Windows”).

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Resetting the WiFi Configuration to Factory Defaults

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If the VCI is no longer accessible, the WLAN settings can be reset to the following

factory settings:

• SSID: MAHAVCI-

[serial number]

• Password: haldenwang

• Encryption: WPA2-PSK

• IP address: 192.168.10.1

• Network mask: 255.255.255.0

1 Press and hold both function keys (F1 and F2) simultaneously.

2 The VCI LEDs (E, F) light-up

blue

3 Press and hold both keys longer than 10 seconds.

4 If both LED light-up

green

, the WLAN settings have been reset.

If both LED light-up

red

, reset has failed. In this case, the reset procedure

should be repeated.

5 Unplug and VCI and plug back in for restart.

This function is no longer available.

•

for the VCI with serial numbers from 2002150

•

following a VCI firmware update (MES from version 7.51.030)

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LED Indicators

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Condition LED 1 (E) LED 2 (F)

Start VCI (boot procedure) Off red, flashing

VCI set-up as WLAN client, looking for

base station white, flashing

VCI set-up as WLAN client, connection

with base station established green, flashing

VCI set-up as base station: yellow, flashing

Device supplied with voltage, but vehicle

ignition off red, flashing

Vehicle ignition on solid green

Data transmission between VCI and PC,

and communication between vehicle and

VCI

Faster flashes

(2x per second)

Press function keys F1 and F2 solid blue solid blue

WLAN has been reset to factory settings solid green solid green

WLAN configuration reset failed solid red solid red

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Firmware Update

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MES checks the MAHA VCI firmware version while establishing communication.

If an older firmware version is running on the device, MES will prompt for a

confirmation of firmware update.

Risk of damage

The update must not be interrupted under any circumstances; otherwise, the de-

vice is at risk of damage.

The process may take several minutes, and consistent voltage supply must be

ensured throughout this process (Do not unplug the device from the male OBD

connector. Do not switch off vehicle ignition.).

6.1

Check and update firmware manually.

1 Call up the menu “VCI settings” (see section “Set-up VCI in MAHA Emission