Fault-Tracing

Fault-tracing

Information

Note! The diagnostic trouble code can also be generated due to damaged AOC-unit (clutch). Check the AOC-unit for visible damages. Listen for noise. Check the oil level in the coupling (Active on Demand Coupling).

Continue - Checking components

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Checking components
- Ignition on.
Activate the feed pump and check that it starts and runs normally.
Listen using a stethoscope or a screwdriver pressed to your ear. The oil pump motor shall hum and vibrate slightly.

Note! The pump motor may sound like it's running but in certain cases it only oscillates.









Is the feed pump working?

Yes - Information

No - Checking the connectors and cables

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Information
The brake control module (BCM) can cause interference in the differential electronic module (DEM). For example, incorrect information from one of the wheel speed sensors causes the information from the Brake control module (BCM) to store a diagnostic trouble code (DTC). Therefore, troubleshoot the Brake Control Module (BCM) for incorrect signals from the wheel speed sensors.

Continue - Fault-tracing information

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Checking the connectors and cables
- Ignition off.
Check the connector between the Differential Electronic Module (DEM) and the feed pump with respect to contact resistance and oxidation.
Check the lead between the Differential Electronic Module (DEM) and the feed pump for damage.
Reinstall the connectors, components etc.
- Ignition on.
Activate the feed pump and check that it starts and runs normally.
Listen using a stethoscope or a screwdriver pressed to your ear. The feed pump motor must hum and vibrate slightly.

Note! The pump motor may sound like it's running but in certain cases it only oscillates.

Remedy as necessary.

Other information:
- Signal specification Pinout Values and Diagnostic Parameters













Is the feed pump working?

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.
- Reinstall the connectors, components etc.
Test-driving is required to ensure that the malfunction has been fixed.
Test drive the vehicle following:
Test driving on lift, automatic transmission Test Driving On Lift, Automatic Transmission
Test driving on lift, manual transmission Test Driving On Lift, Manual Transmission
Check that the diagnostic trouble code (DTC) is not generated again after the test-drive.

Is the function OK?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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Fault-tracing information




Information

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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