P0480

P0480-COOLING FAN 1 CONTROL CIRCUIT





For a complete wiring diagram Refer to Diagrams/Electrical.


- When Monitored:
With the ignition on. Battery voltage greater than 10 volts.

- Set Condition:
The PCM is requesting the TIPM to turn on the Condenser Fan On and it is not operating. One Trip Fault. Three good trips to turn off the MIL.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview .


Diagnostic Test


1. COOLING FAN RELAY OPERATION
Ignition on, engine not running.
With a scan tool, actuate the Cooling Fan Relay.
Is the Cooling Fan Relay operating?

Yes


- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition


No


- Go To 2



2. ECT SENSOR DTCS CURRENTLY ACTIVE
Are any CAN C or ECT Sensor DTCs active at this time?

Yes


- Refer to the appropriate diagnostics for the ECT Sensor or CAN C Bus DTCs


No


- Go To 3



3. CONDENSER FAN CONTROL CIRCUIT DTCS SET IN THE TIPM
Are any Condenser Fan Control Circuit DTCs set in the TIPM?

Yes


- Diagnose the appropriate Condenser Fan Control Circuits in the TIPM


No


- Go To 4



4. POWERTRAIN CONTROL MODULE (PCM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Cooling Fan and the Totally Integrated Power Module (TIPM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Cooling Fan Module and the Totally Integrated Power Module connectors.
Refer to any Technical Service Bulletins that may apply.
Were there any problems found?

Yes


- Repair as necessary.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test


No


- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test