Incorrect Value

Incorrect value

Checking the status




- Engine idling.
Read off the power supply for the differential electronic module (DEM).

Other information:
- For information about signals, see Signal specification, control module for four wheel drive Signal Specification, Control Module for Four Wheel Drive.





Is the voltage OK?

Yes - No Fault Found

No - Checking the wiring

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Checking the wiring




- Disconnect the connector from the differential electronic module (DEM).
Check the cable between terminal #2 and ground. Check for an open-circuit.
Check the connectors. Check for bent or damaged pins.
Remedy as necessary.

Other information:
- For information about signals, see Signal specification, control module for four wheel drive Signal Specification, Control Module for Four Wheel Drive
- To check the wiring and connections, see Checking wiring and terminals Checking Wiring And Terminals.













Were any faults found in the ground cable?

Yes - Fault-tracing information

No - Checking the wiring

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Checking the wiring
Check the power supply to terminal #1. Check for an open-circuit. Check for a short-circuit to ground.

Hint: Check the voltage between terminal #1 and ground with the ignition on and the voltmeter connected. The voltage should be battery voltage.

Remedy as necessary.

Other information:
- For information about signals, see Signal specification, control module for four wheel drive Signal Specification, Control Module for Four Wheel Drive
- To check the wiring and connections, see Checking wiring and terminals Checking Wiring And Terminals.













Were any faults found in the cable?

Yes - Fault-tracing information

No - Replacing the control module

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Replacing the control module
Replace the differential electronic module (DEM). See Differential electronic module (DEM), replacement Service and Repair.






Continue - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking the status

FAULT FOUND - Fault Found

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