LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LAN System (Can) (Except Hybrid) >> DTC/Circuit Diagnosis >> HVAC Branch Line Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit side and connector side).

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT 
    1. Disconnect the connector of A/C auto amp.
    2. Check the resistance between the A/C auto amp. harness connector terminals.
      A/C auto amp. harness connector Resistance (Ω)
      Connector No. Terminal No.
      M50 1 21 Approx. 54 - 66

      Is the measurement value within the specification? 

      YES: GO TO 3.

      NO: Repair the A/C auto amp. branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check the power supply and the ground circuit of the A/C auto amp. Refer to "A/C AUTO AMP.: DIAGNOSIS PROCEDURE ".

    Is the inspection result normal? 

    YES (Present error): Replace the A/C auto amp. Refer to "REMOVAL AND INSTALLATION ".

    YES (Past error): Error was detected in the A/C auto amp. branch line.

    NO: Repair the power supply and the ground circuit.

scientia non olet · About LEMON Manuals