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DTC P0646 A/C Clutch Relay Control Circuit Low: DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
- Detects circuit short to low voltage
|
- Poor connection
- Open or short to ground in A/C relay circuit
- Faulty A/C relay
- Faulty PCM
|
| Enable Conditions |
- After 0.5 sec under conditions below
- No DTC exists
- Engine works
- 11V ≤ Battery voltage ≤ 16V
|
| Threshold value |
|
| Diagnosis Time |
- Continuous (More than 5 seconds failure for every 10 seconds test)
|
| MIL On Condition |
|