LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 892 (LAN System (Can)) >> DTC/Circuit Diagnosis >> HVAC Branch Line Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  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 41 40 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 POWER AND GROUND 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