Nissan Altima HL32 Hybrid. Manual - part 508

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

HAC-53

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

Description

INFOID:0000000004215332

COMPONENT DESCRIPTION

The mode door motor (1) are attached to the heater &cooling unit

assembly. It rotates so that air is discharged from the outlet set by

the unified meter and A/C amp. Motor rotation is conveyed to a link

which activates the mode door.

DTC Logic

INFOID:0000000004215333

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 50 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to Diagnosis Procedure. 

HAC-53, "Diagnosis Procedure"

.

NO

>> END.

Diagnosis Procedure

INFOID:0000000004215334

1.

CHECK POWER SUPPLY FOR AUTO AMP.

1. Turn ignition switch ON.

2. Check voltage between auto amp. harness connector M37 terminal 20 and ground.

Is the inspection result normal?

:

Vehicle front

JPIIA0035ZZ

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause

B2636

DR VENT DOOR FAIL

Mode door does not change even if auto amp. 
operates mode door motor.

• Mode door motor
• Auto amp.
• Harness or connectors

(The door motor circuit is open or short-
ed.)

B2637

DR B/L DOOR FAIL

B2638

DR D/F1 DOOR FAIL

B2639

DR DEF DOOR FAIL

B2654

D/F2 DOOR FAIL

B2655

B/L DOOR FAIL

(+)

(

−)

Voltage

Auto amp.

—

Connector

Terminal

M37

20

Ground

Battery voltage

HAC-54

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

YES

>> GO TO 2.

NO

>> Replace auto amp. Refer to 

VTL-8, "Removal and Installation"

.

2.

CHECK SIGNAL FOR AUTO AMP.

Confirm A/C LAN signal between auto amp. harness connector M37 terminal 3 and ground using an oscillo-

scope.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace auto amp. Refer to 

VTL-8, "Removal and Installation"

.

3.

CHECK POWER SUPPLY FOR MODE DOOR MOTOR

Check voltage between mode door motor harness connector M127 terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK SIGNAL FOR MODE DOOR MOTOR

Confirm A/C LAN signal between mode door motor harness connector M127 terminal 1 and ground using an

oscilloscope.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK MOTOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect mode door motor connector.

(+)

(

−)

Voltage

Auto amp.

—

Connector

Terminal

M37

3

Ground

SJIA1453J

(+)

(

−)

Voltage

Mode door motor

—

Connector

Terminal

M127

3

Ground

Battery voltage

(+)

(

−)

Voltage

Mode door motor

—

Connector

Terminal

M127

1

Ground

SJIA1453J

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

HAC-55

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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3. Check continuity between mode door motor harness connector M127 terminal 2 and ground.

Is the inspection result normal?

YES

>> Replace mode door motor. Refer to 

VTL-19, "Removal and Installation"

.

NO

>> Repair harness or connector.

Mode door motor

—

Continuity

Connector

Terminal

M127

2

Ground

Continuity should exist

HAC-56

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR

Description

INFOID:0000000004215335

COMPONENT DESCRIPTION

The intake door motor (1) is attached to the blower unit. It rotates so

that air is drawn from inlets set by the auto amp. Motor rotation is

conveyed to a lever which activates the intake door.

DTC Logic

INFOID:0000000004215336

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 50 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to Diagnosis Procedure. 

HAC-53, "Diagnosis Procedure"

.

NO

>> END.

Diagnosis Procedure

INFOID:0000000004215337

1.

CHECK INTAKE DOOR CONTROL LINKAGE

Check intake door control linkage.
Is it installed normally?

YES

>> GO TO 2.

NO

>> Repair or adjust control linkage.

2.

CHECK POWER SUPPLY FOR AUTO AMP.

1. Turn ignition switch ON.

2. Check voltage between auto amp. harness connector M37 terminal 20 and ground.

:

Vehicle front

JPIIA0038ZZ

DTC No.

Trouble Diagnosis 

Name

DTC Detecting Condition

Possible Cause

B263D

FRE DOOR FAIL

Intake door does not change even if auto amp. 
operates intake door motor.

• Intake door motor
• Auto amp.
• Harness or connectors

(The door motor circuit is open or shorted.)

B263E

20P FRE DOOR FAIL

B263F

REC DOOR FAIL

B2656

BTC FRE DOOR 
FAIL