| DTC U0284:00 |
LIN communication system: Communication error between active air shutter and PCM |
| Detection Condition |
- PCM detects a communication error between the PCM and active air shutter.
Diagnostic support note
- This is an intermittent 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 |
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| Possible Cause |
- LIN communication line malfunction between active air shutter and PCM
- Active air shutter connector or terminals malfunction
- Short to ground or open circuit in active air shutter power supply circuit
- Short to ground in wiring harness between ENGINE3 15 A fuse and active air shutter terminal A
- ENGINE3 15 A fuse malfunction
- Open circuit in wiring harness between main relay terminal C and active air shutter terminal A
- Open circuit in wiring harness between active air shutter terminal D and body ground
- PCM connector or terminals malfunction
- Short to ground in wiring harness between active air shutter terminal C and PCM terminal 2BG
- Short to power supply in wiring harness between active air shutter terminal C and PCM terminal 2BG
- Open circuit in wiring harness between active air shutter terminal C and PCM terminal 2BG
- Active air shutter malfunction
- PCM malfunction
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