Checking the Power Supply

Checking the power supply

Checking the connectors
Check connectors 54/13, 54/3L and control unit connector for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.





Is there a fault?

Yes - Fault Found

No - Checking the wires and components

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Checking the wires and components
Check that fuse 11C/28 in the interior fuse box is correctly installed and is intact.
Check the wire between the battery positive pole and control unit 1 and 11 for an intermittent open circuit as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , and for an intermittent short circuit to ground as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Additional information
- For information on signals and additional values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- To connect the test box, see Connecting the breakout box Connecting the Breakout Box.






Continue - Fault Found

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