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P0647, P1647

Read the instructions below then start the fault diagnostic procedure.

Symptom: No A/C function.

P0647, P1647


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

P1647 A/C Relay Circuit. Open Circuit.


Fault symptoms


• No A/C function.


Conditions

The following conditions apply for this DTC:


• P0647: The signal on the control module output is more than 4.7 V for more than 0.6 seconds. Diagnosis is carried out when output is active.

• P1647: The signal on the control module output has detected an open circuit lasting for more than 0.6 seconds. Diagnosis is carried out when output is inactive.


Diagnostic help

A request from ACC/MPC must have been received before diagnosis is performed.

Activation of A/C relay output.