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P0647, P1647

Read the instructions below then start the fault diagnostic procedure.

Symptom: A/C not working.

P0647, P1647


P0647 A/C Relay Circuit. Short to B+.

P1647 A/C Relay Circuit. Open Circuit.


Fault symptoms


• A/C not working.


Conditions

The following conditions apply for this DTC:


• P0647: The signal of the control module output is more than 4.7 V for more than 0.6 seconds. Diagnostics performed during active output.

• P1647: The signal of the control module output has detected a break for more than 0.6 seconds. Diagnostics performed during inactive output.


Diagnostic help

The request from ACC/MPC must come before the diagnostics are performed.

Activating AC relay output.