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Maintenance Manual for Chery · Windcloud M7.9.7 EFI System
Failure code: P0646 too low control circuit voltage of air conditioner compressor relay Step Operation Result Solution 1 Connect scanner and commutator, and then turn
Go to next step Yes Go to Step 4 2 Unplug air conditioner compressor relay, turn No Go to next step Yes Repair or 3 Check power supply terminal circuit of relay to see No Go to Step 2 Yes Replace relay 4 Check the voltage between Pin 86 of relay (control No Go to next step Yes Repair or 5 Check the connection between Pin 86 of relay No Diagnosis
Failure code: P0647 too high control circuit voltage of air conditioner compressor relay Step Operation Result Solution 1 Connect scanner and commutator, and then turn
Go to next step Yes Go to Step 4 2 Unplug air conditioner compressor relay, turn No Go to next step Yes Repair or 3 Check power supply terminal circuit of relay to see No Go to Step 2 Yes Replace relay 4 Check the voltage between Pin 86 of relay (control No Go to next step
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