Nissan Maxima Service and Repair Manual: DTC/circuit diagnosis

MAIN LINE BETWEEN DLC AND HVAC CIRCUIT

Diagnosis Procedure

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the following harness connectors.
   • ECM
   • A/C auto amp.
4. Check the continuity between the data link connector and the A/C auto amp. harness connector.