P0483

P0483-HEV COOLING RADIATOR FAN FAULT - HEV





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

Theory of Operation

The Cooling Fan 3 actual speed signal is a direct input to the Hybrid Gateway Module (HGM). The HGM sends the actual signal when the Powertrain Control Module (PCM) requests cooling fan 3 operation over the CAN C bus.

- When Monitored:
Ignition on.

- Set Condition:
The PCM receives a different actual versus requested message for cooling fan 3 operation from the HGM. One trip fault.





WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC

NOTE: If any Communication DTCs set along with this code, diagnose the DTCs first.

1. Turn the ignition on.
2. With the scan tool, View DTCs.
3. Record all DTC information.
4. With the scan tool, Clear DTCs.
5. Monitor the scan tool.
6. With the scan tool, View DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

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

2. P0695-COOLING FAN 3 CONTROL CIRCUIT LOW OR P0696-COOLING FAN 3 CONTROL CIRCUIT HIGH ALSO ACTIVE
1. With the scan tool read DTCs.

Are the P0695-Cooling Fan 3 Control Circuit Low or P0696-Cooling Fan 3 Control Circuit High also set?

Yes

- Follow the diagnostic procedure for P0695-Cooling Fan 3 Control Circuit Low or P0696-Cooling Fan 3 Control Circuit High. .
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 3

3. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the appropriate sensors, the PCM and the HGM.
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 sensors and PCM connectors.
4. Search for any Technical Service Bulletins (TSBs) 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 PCM.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.