P0646
Read the instructions below then start the fault diagnostic procedure.
Symptom: Continual A/C function.
| P0646 |
Fault symptoms
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Continual A/C function.
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Conditions
The following conditions apply for this DTC:| • |
The signal of the control module output is less than 0.4 V for more than 0.6 seconds. Diagnostics performed during inactive output.
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Diagnostic help
The request from ACC/MPC must come before the diagnostics are performed.Activating AC relay output.
