Nissan Maxima Service and Repair Manual: A/C switch assembly signal circuit

Nissan Maxima Service and Repair Manual / Ventilation, heater & air conditioner / Heater & air conditioning control system / DTC/circuit diagnosis / A/C switch assembly signal circuit

Diagnosis Procedure

1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

  1. Using CONSULT, 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.

2.CHECK RX (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.

Nissan Maxima. CHECK RX (A/C SWITCH ASSEMBLY → A/C AUTO AMP.) CIRCUIT CONTINUITY

4 - 7: Continuity should exist.

  1. Check continuity between A/C switch assembly harness connector M104 (A) terminal 4 and ground.

4 - Ground: Continuity should not exist.

3.CHECK TX (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.

Nissan Maxima. CHECK RX (A/C SWITCH ASSEMBLY → A/C AUTO AMP.) CIRCUIT CONTINUITY

3 - 6: Continuity should exist.

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

3 - Ground: Continuity should not exist.

    Magnet clutch
    Description SYSTEM DESCRIPTION A/C auto amp. controls A/C compressor operation by ambient temperature and signal from ECM. Low Temperature Protection Control A/C auto amp. will turn the A/C co ...

    Power supply and ground circuit
    A/C AUTO AMP. A/C AUTO AMP.: Description COMPONENT DESCRIPTION A/C Auto Amp. (Air Conditioner Automatic Amplifier) The A/C auto amp. (1) has a built-in microcomputer that processes informatio ...

    Other materials:

    Warning function symptoms
    Symptom Table WARNING FUNCTION MALFUNCTION NOTE: Before performing the diagnosis in the following table, check "WORK FLOW". Refer to DLK-9, "Work Flow". Check that vehicle is under the condition shown in "Conditions of vehicle" before starting diagnosis, and check each sy ...

    Lock-up and select control system
    System Diagram System Description  The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency.  The torque converter clutch control valve operation is controlled by the torque converte ...

    B2603 shift position status
    Description BCM confirms the shift position with the following 2 signals.  CVT selector lever  P/N position switch DTC Logic DTC DETECTION LOGIC NOTE: If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2026 Copyright www.nimainfo.com
    0.0173