Current Too High

Current too high

Checking the blower fan




- Ignition on.
- Activate blower fan by setting the blower fan switch to maximum speed.
Check that the blower fan is working.

Is the blower fan working?

Yes - Intermittent fault

No - Checking component

-------------------------------------------------

Checking component
Check that there is enough space for the blower fan rotor to rotate in the climate control system and that nothing is blocking it.
Check by hand whether the blower fan rotor blades can rotate freely with the blower fan removed.
Remedy as necessary.

Other information:
- To access/replace the blower fan, refer to Replacing blower fan motor Replacing Blower Fan Motor.





Were any faults found?

Yes - Verification
DONE

No - Checking cables

-------------------------------------------------

Checking cables
Check the control module and power unit connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check cable between control module #A14 and power unit for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check power supply to power unit #A4 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check ground lead between power unit #B2 and ground terminal for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To remove the control module, refer to Replacing ECC control module Removal and Replacement.
- To access the power unit, refer to Replacing the power unit (Electronic climate control) Replacing the Power Unit (Electronic Climate Control).


















Continue - Verification
DONE

-------------------------------------------------

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 passenger compartment fan by setting the fan speed selector to max. speed.
Check that the passenger compartment fan works.

Is the blower fan working normally?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

-------------------------------------------------

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

------------------------

Attempt New Test - Checking the blower fan

-------------------------------------------------

Intermittent fault
- Check the control module and power unit connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between control module #A14 and power unit for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check power supply to power unit #A4 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check ground lead between power unit #B2 and ground terminal for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
The fault also could have been caused by the fan sticking, dirt etc.
Remedy as necessary.

Other information:
- To access/replace the blower fan, refer to Replacing blower fan motor Replacing Blower Fan Motor.


















Continue - Fault-tracing information
DONE

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

------------------------

Attempt New Test - Checking the blower fan

-------------------------------------------------