Nissan Pathfinder. Manual — part 710
B263D, B263E, B263F INTAKE DOOR MOTOR
HAC-101
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B263D, B263E, B263F INTAKE DOOR MOTOR
DTC Logic
INFOID:0000000009176839
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON.
2. Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES
>> Refer to
HAC-101, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009176840
Regarding Wiring Diagram information, refer to
1.
CHECK INTAKE DOOR MOTOR COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between intake door motor harness connector and ground with the oscilloscope.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK INSTALLATION OF INTAKE DOOR MOTOR
Check intake door motor is properly installed. Refer to
.
Is the inspection result normal?
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B263D
FRE DOOR FAIL
When the malfunctioning intake door
position is detected at FRE position
• Intake door motor
(PBR internal circuit is open or short-
ed)
• A/C auto amp.
• Harness and connector
(LIN communication line is open or
shorted)
B263E
20P FRE DOOR FAIL
When the malfunctioning intake door
position is detected at 20% FRE posi-
tion
B263F
REC DOOR FAIL
When the malfunctioning intake door
position is detected at REC position
+
−
Output waveform
Intake door motor
Connector
Terminal
M128
2
Ground
SJIA1453J
HAC-102
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B263D, B263E, B263F INTAKE DOOR MOTOR
YES
>> Replace intake door motor. Refer to
HAC-165, "INTAKE DOOR MOTOR : Removal and Installa-
.
NO
>> Repair or replace malfunctioning part.
3.
CHECK INTAKE DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake door motor and A/C auto amp. connector.
3. Check continuity between intake door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-157, "Removal and Installation"
.
NO
>> Repair harness or connector.
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M128
2
M50
16
Yes
B2799, B279A AIR MIX DOOR MOTOR (REAR)
HAC-103
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B2799, B279A AIR MIX DOOR MOTOR (REAR)
DTC Logic
INFOID:0000000009176841
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON.
2. Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
3. Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES
>> Refer to
HAC-103, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009176842
Regarding Wiring Diagram information, refer to
1.
CHECK AIR MIX DOOR MOTOR (REAR) COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between air mix door motor (rear) harness connector and ground with the oscillo-
scope.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK INSTALLATION OF AIR MIX DOOR MOTOR (REAR)
Check air mix door motor (rear) is properly installed. Refer to
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2664
REAR AIR MIX DOOR MOT
Air mix door motor (rear) PBR position
95% or more
• Air mix door motor (rear)
(PBR internal circuit is open or short-
ed)
• Air mix door motor (rear) installation
condition
• A/C auto amp.
• Harness and connector
(LIN communication line is open or
shorted)
B2665
Air mix door motor (rear) PBR position
5% or less
+
−
Output waveform
Air mix door motor (rear)
Connector
Terminal
M132
2
Ground
SJIA1453J
HAC-104
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
B2799, B279A AIR MIX DOOR MOTOR (REAR)
Is the inspection result normal?
YES
>> Replace air mix door motor (rear). Refer to
HAC-165, "AIR MIX DOOR MOTOR : Removal and
Installation - Air Mix Door Motor (Rear)"
.
NO
>> Repair or replace malfunctioning part.
3.
CHECK AIR MIX DOOR MOTOR (REAR) COMMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect air mix door motor (rear) and A/C auto amp. connector.
3. Check continuity between air mix door motor (rear) harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-157, "Removal and Installation"
.
NO
>> Repair harness or connector.
Air mix door motor (rear)
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M132
2
M50
16
Yes
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