Checking Ground Terminals, Brake Control Module
Checking the ground terminals, brake control module
Checking the ground terminals
- Ignition off
- Connect the breakout box
- Control module disconnected.
- 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 breakout box terminal #16 and between the battery negative terminal and breakout box terminal #46. 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 31/95 (left-hand wheel arch) and brake control module terminals #16 and #46. Check for an open-circuit. Check for contact resistance.
Other information
- To connect the breakout box, see Connecting the breakout box, brake control module (BCM), B6324S5 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, reinstall 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 control module.
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 terminals
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