LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 999 (Heater & Air Conditioning Control System) >> With Monochrome Display >> Component Diagnosis >> A/C Switch Assembly Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
    1. Using CONSULT-III, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
    2. Check if any DTC No. is displayed in the self-diagnosis results.
    NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to "DTC LOGIC - U1000 CAN COMM CIRCUIT " or "DTC LOGIC - U1010 CONTROL UNIT (CAN) ".

    Is any DTC No. displayed? 

    YES: Perform diagnosis for the applicable DTC. Refer to "DTC INDEX ".

    NO: GO TO 2.

  2. CHECK TX (A/C SWITCH ASSEMBLY → A/C AUTO AMP.) CIRCUIT CONTINUITY
    1. Turn ignition switch OFF.
    2. Disconnect the A/C switch assembly and the A/C auto amp. connectors.
    3. Check continuity between A/C switch assembly harness connector M104 (A) terminal 4 and A/C auto amp. harness connector M37 (B) terminal 7.

      4 - 7: Continuity should exist. 

      Fig 1: Checking Continuity Between A/C Switch Assembly Connector M104 Terminal 4 And A/C Auto Amp Connector M37 Terminal 7
      G05876137Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between A/C switch assembly harness connector M104 (A) terminal 4 and ground.

      4 - Ground: Continuity should not exist. 

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair harness or connector.

  3. CHECK RX (A/C AUTO AMP. → A/C SWITCH ASSEMBLY) CIRCUIT CONTINUITY
    1. Check continuity between A/C switch assembly harness connector M104 (A) terminal 3 and A/C auto amp. harness connector M37 (B) terminal 6.

      3 - 6: Continuity should exist. 

    2. Check continuity between A/C switch assembly harness connector M104 (A) terminal 3 and ground.

      3 - Ground: Continuity should not exist. 

      Fig 2: Checking Continuity Between A/C Switch Assembly Connector M104 Terminal 3 And Ground
      G05876138Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: Perform trouble diagnosis for the A/C switch assembly. Refer to "A/C SWITCH ASSEMBLY: DIAGNOSIS PROCEDURE ".

    NO: Repair harness or connector.

scientia non olet · About LEMON Manuals