Nissan Murano: Heater & Air Conditioning Control System :: Dtc/circuit Diagnosis / B2632 Dr Air Mix Door Mot

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Air mix door motor LH

• Air mix door motor LH installation condition

• A/C auto amp.

• Harness and connector (Air mix door motor LH circuit is open or shorted)

FAIL-SAFE

—

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Select “Self Diagnostic Result” mode of “HVAC”.

3. Check DTC.

Is DTC detected?

Refer to DTC Diagnosis Procedure.

Inspection End.

CHECK AIR MIX DOOR MOTOR LH COMMUNICATION SIGNAL

1. Ignition switch ON.

2. Check output waveform between air mix door motor LH harness connector and ground with the oscilloscope.

   +		−		Output waveform
   Air mix door motor LH
   Connector	Terminal
   M155	3	Ground

Is the inspection result normal?

GO TO 2.

GO TO 3.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR LH

Check air mix door motor LH is properly installed. Refer to Exploded View.

Is the inspection result normal?

Replace air mix door motor LH. Refer to Removal and Installation - (LH).

Repair or replace malfunctioning part.

CHECK AIR MIX DOOR MOTOR LH COMMUNICATION SIGNAL CIRCUIT

1. Ignition switch OFF.

2. Disconnect air mix door motor LH connector and A/C auto amp. connector.

3. Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connector.

   Air mix door motor LH		A/C auto amp.		Continuity
   Connector	Terminal	Connector	Terminal
   M155	3	M50	16	Yes

Is the inspection result normal?

Replace A/C auto amp. Refer to Removal and Installation.

Repair harness or connector.