Nissan Maxima Service and Repair Manual: B2632, B2633 air mix door motor (driver side)

Description

COMPONENT DESCRIPTION

Air Mix Door Motor (Driver side)

  • The air mix door motor (driver side) (1) is attached to the heater & cooling unit assembly.
  • It rotates so that the air mix door is opened or closed to a position set by the A/C auto amp.
  • Motor rotation is then conveyed through a shaft and the air mix door position feedback is then sent to the A/C auto amp. by PBR built-in air mix door motor.

Nissan Maxima. COMPONENT DESCRIPTION

DTC Logic

DTC DETECTION LOGIC

NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC- 30, "DTC Logic" or HAC-31, "DTC Logic".

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION 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.FUNCTION INSPECTION

  1. Turn the temperature control dial (driver side) until 32C (90F) is displayed.
  2. Check for warm air at discharge air outlets.
  3. Operate the compressor.
  4. Turn the temperature control dial (driver side) until 18C (60F) is displayed.
  5. Check for cool air at air discharge outlets.

Diagnosis Procedure

1.CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY

  1. Turn ignition switch ON.
  2. Check voltage between air mix door motor (driver side) harness connector M128 terminal 1 and ground.

Nissan Maxima. CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY

1 - Ground: Battery Voltage

2.CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Nissan Maxima. CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Check the output waveform (LAN signal) between air mix door motor (driver side) harness connector M128 terminal 3 and ground using an oscilloscope

Nissan Maxima. CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

3.CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect air mix door motor (driver side) connector.
  3. Check continuity between air mix door motor (driver side) harness connector M128 terminal 2 and ground.

Nissan Maxima. CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

2 - Ground: Continuity should exist.

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