DTC P0480-00; Cooling Fan Control Circuit Malfunction: Notes
DTC P0480-00; COOLING FAN CONTROL CIRCUIT MALFUNCTION - DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0480:00 |
Cooling fan control circuit malfunction |
| DETECTION CONDITION |
- The PCM monitors the input voltage from the fan control module. If the voltage at the PCM terminal 2X remains low or high for 5 s, the PCM determines that the fan control circuit has a malfunction.
Diagnostic support note
- This is a continuous monitor (other).
- The check engine light does not illuminate.
- FREEZE FRAME DATA is not available.
- Snapshot data is available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- Fan control module connector or terminals malfunction
- Cooling fan relay malfunction
- Short to ground or open circuit in cooling fan relay power supply circuit
- Short to ground in wiring harness between MAIN 200 A fuse and cooling fan relay terminal A
- MAIN 200 A fuse malfunction
- FAN3 40 A fuse malfunction
- Open circuit in wiring harness between battery positive terminal and cooling fan relay terminal A
- Short to ground or open circuit in cooling fan relay power supply circuit
- Short to ground in wiring harness between ENGINE3 15 A fuse and cooling fan relay terminal B
- ENGINE3 15 A fuse malfunction
- Open circuit in wiring harness between main relay terminal C and cooling fan relay terminal B
- Open circuit in wiring harness between fan control module terminal C and body ground
- Short to ground in wiring harness between cooling fan relay terminal C and fan control module terminal A
- Open circuit in wiring harness between cooling fan relay terminal C and fan control module terminal A
- PCM connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- Fan control module terminal B-PCM terminal 2X
- Cooling fan relay terminal D-PCM terminal 2AU
- Short to power supply in wiring harness between fan control module terminal B and PCM terminal 2X
- Open circuit in wiring harness between the following terminals:
- Fan control module terminal B-PCM terminal 2X
- Cooling fan relay terminal D-PCM terminal 2AU
- Fan control module malfunction
- PCM malfunction
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