P0481

P0481-COOLING FAN 2 CONTROL CIRCUIT







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

- Set Condition:
The Powertrain Control Module (PCM) is requesting the Totally Integrated Power Module (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. Pre-Diagnostic Troubleshooting Procedure.

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

Is the Cooling Fan Relay operating?

Yes

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

No

- Go To 2

2. ECT SENSOR DTCS CURRENTLY ACTIVE

Are any CAN C or ECT Sensor DTCs active at this time?

Yes

- Perform the appropriate diagnostics for the ECT Sensor or CAN C Bus DTCs. Testing and Inspection.

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. Testing and Inspection.

No

- Go To 4

4. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Cooling Fan and the Totally Integrated Power Module (TIPM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. 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.
4. Perform 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.