DTC P0482; Pcm Cooling Fan Relay No. 2 And No. 3 Control Circuit Malfunction: Notes
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0482:00 |
Cooling fan relay No. 2 and No. 3 control circuit malfunction |
| DETECTION CONDITION |
- The cooling fan relay No. 2 and No. 3 control voltage at the PCM terminal 2AV is low or cooling fan relay No. 2 and No. 3 control current is high for a continuous 5 s relative to the PCM control signal.
Diagnostic support note
- This is a continuous monitor (other).
- The check engine light does not illuminate.
- FREEZE FRAME DATA (Mode 2) is not available.
- Snapshot data is available.
- DTC is stored in the PCM memory.
|
| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- Cooling fan relay No. 2 and/or No. 3 malfunction
- Short to ground or open circuit in cooling fan relay No. 2 and/or No. 3 power supply circuit
- Short to ground in wiring harness between the following terminals:
- ENGINE3 15 A fuse-Cooling fan relay No. 2 terminal A
- ENGINE3 15 A fuse-Cooling fan relay No. 3 terminal A
- ENGINE3 15 A fuse malfunction
- Open circuit in wiring harness between the following terminals:
- Main relay terminal D-Cooling fan relay No. 2 terminal A
- Main relay terminal D-Cooling fan relay No. 3 terminal A
- Short to ground in wiring harness between the following terminals:
- Cooling fan relay No. 2 terminal E-PCM terminal 2AV
- Cooling fan relay No. 3 terminal E-PCM terminal 2AV
- PCM connector or terminals malfunction
- Short to power supply in wiring harness between the following terminals:
- Cooling fan relay No. 2 terminal E-PCM terminal 2AV
- Cooling fan relay No. 3 terminal E-PCM terminal 2AV
- Open circuit in wiring harness between the following terminals:
- Cooling fan relay No. 2 terminal E-PCM terminal 2AV
- Cooling fan relay No. 3 terminal E-PCM terminal 2AV
- PCM malfunction
|
|
|