Checking Power Supply and Ground. Permanent Fault

Checking power supply and ground. Permanent fault

Checking supply
Check passenger compartment fuse 24 (11C/24:2).
Check the cable between combined instrument panel supply relay (2/29) terminal #3 and passenger compartment fuse 24 (11C/24:2). Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check that the relay is not defective.
Check the cable between combined instrument panel terminal #6 and parking brake connector terminal #1 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between combined instrument panel terminal #1 and combined instrument panel supply relay (2/29) terminal #1. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between combined instrument panel terminal #14 and ground. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary

Other information:
- To connect the breakout box, see Connecting the Driver Information Module (DIM) test box Connecting the Driver Information Module (DIM) Test Box.









Continue - Checking the ground terminal

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Checking the ground terminal




- Ignition off
- Control module disconnected
- Switch off all power consuming equipment (courtesy lighting, radio etc).
Connect an ohmmeter between terminal #14 on the breakout box and the battery negative terminal.

Additional information
- To connect the breakout box, see Connecting the Driver Information Module (DIM) test box Connecting the Driver Information Module (DIM) Test Box
- For information about signals see Driver Information Module (DIM) signal description Signal Specification, Driver Information Module (DIM).









The ohmmeter should read approximately 0 ohms.

OK - Procedure complete

Not OK - Checking for open-circuits, contact resistance and oxidation

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Checking for open-circuits, contact resistance and oxidation
Check ground terminal 31/83. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Other information
- For information about ground terminals, see wiring diagram.





Was a fault detected?

Yes - Remedy as required

No - Procedure complete

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