Signal Missing

Signal missing

Checking the component




- Ignition off.
- Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
- Remedy as necessary.
- Ignition on.
- Check all speeds of the engine cooling fan (FC).
Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.









Continue - Checking the component and wiring

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Replacing a component








- Ignition off.

Caution! Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work.

Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections.
Remedy as necessary.

Other information
- Engine cooling fan (FC), replacing Service and Repair





Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).





Is the engine cooling fan (FC) working?

Yes - Verification completed

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing 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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Attempt New Test - Checking the component

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Checking the component and wiring








- Ignition off.

Caution! Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work.

If the engine cooling fan (FC) cannot be activated at any speed:
- Check the fuse, power supply cable and ground lead for the engine cooling fan (FC).
- Check the connector and wiring between the engine control module (ECM) and engine cooling fan (FC) module. Check for damage. Check for an open circuit. Check for a short circuit.
If the engine cooling fan (FC) can be activated at one or more speeds:
- Check the connectors to the engine cooling fan (FC) control module and Engine Control Module (ECM). Check for damage to pins and connections.
- Also check other connectors and connections that connect cables between Engine Control Module (ECM) and the control module for electric cooling fan.
- Check the wiring between the engine control module (ECM) and the engine cooling fan (FC) module. Check for damage.
Remedy as necessary.

Other information
- Connecting the breakout box, B5254T2 Connecting the Test Box
- 5 cylinder: Signal specification Signal Specification
- 6 cylinder: Signal specification Signal Specification
- Engine cooling fan (FC), replacing Service and Repair
- For information about the cable routing, see the relevant Wiring Diagram.
- Checking wiring and terminals Checking Wiring And Terminals





Was a fault detected?

Yes - Verification

No - Replacing a component

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