Checking Ground Terminal, Brake Control Module (BCM)

Checking the ground terminal

Checking the ground terminal








- Ignition off
- Connect the breakout box
- Switch off all equipment that takes power from the battery (for example, courtesy lighting, radio etc.).
Check the resistance between the battery negative terminal and terminal #16 (#A16) and between the battery negative terminal and terminal #47 (#A47). The resistance must be 0 ohms.
Check the ground terminal 1/1 (battery negative terminal) if the resistance is incorrect. Check for an open-circuit and contact resistance.
Check the cable between ground terminal 31/80 (left-hand wheel arch) and terminals #16 (#A16) and #47 (#A47). Check for an open-circuit. Check for contact resistance.

Other information
- Connecting the breakout box, B5254T7 Connecting the Breakout Box, Brake Control Module (BCM)
- For further information about the fuses and relays, see the Wiring Diagram.





Was a fault detected?

Yes - Verification

No - Fault-tracing information

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Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reconnect the connectors, components, etc.
- Ignition on.
The ABS warning lamp lights when the ignition is switched on.
Check that the warning lamp goes out after approximately 2 seconds.

Note! The warning lamp will not go out if a fault has been stored in the brake control module (BCM).





Does the warning lamp go out after 2 seconds?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.
Complete the fault-tracing for those fault or try again.

Do you want to terminate fault-tracing at this time?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the ground terminal

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