Nissan Pathfinder (2007 year). Manual — part 52
TROUBLE DIAGNOSIS
ATC-67
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ATC
2007 Pathfinder
2.
CHECK POWER SUPPLY CIRCUITS FOR AIR MIX DOOR MOTOR (DRIVER)
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector and air mix door motor
(driver) connector.
3.
Check continuity between front air control harness connector
M49 terminal 2 and 3 and air mix door motor (driver) harness
connector M147 terminal 5 and 6.
OK or NG
OK
>> Replace air mix door motor (driver). Refer to
"FRONT AIR MIX DOOR MOTOR (DRIVER)"
NG
>> Repair or replace harness as necessary.
3.
CHECK PBR REFERENCE SIGNAL VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (driver) connector.
3.
Turn ignition switch ON.
4.
Check voltage between air mix door motor (driver) harness con-
nector M147 terminal 3 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
CHECK PBR REFERENCE VOLTAGE CIRCUIT BETWEEN AIR MIX DOOR MOTOR (DRIVER) AND
FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (driver) harness
connector M147 terminal 3 and front air control harness connec-
tor M49 terminal 23.
OK or NG
OK
>> Replace front air control. Refer to
.
NG
>> Repair or replace harness as necessary.
5.
CHECK PBR GROUND REFERENCE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (driver) harness
connector M147 terminal 1 and front air control harness connec-
tor M49 terminal 26.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace harness as necessary.
2 - 5
: Continuity should exist.
3 - 6
: Continuity should exist.
WJIA1092E
3 - Ground
: Approx. 5V
WJIA1246E
3 - 23
: Continuity should exist.
WJIA1093E
1 - 26
: Continuity should exist.
WJIA1247E
ATC-68
TROUBLE DIAGNOSIS
2007 Pathfinder
6.
CHECK PBR FEEDBACK SIGNAL
1.
Reconnect the front air control connector and air mix door motor
(driver) connector.
2.
Turn ignition switch ON.
3.
Check voltage between front air control harness connector M49
terminal 22 and ground.
4.
Rotate driver temperature control dial through complete range.
OK or NG
OK
>> Replace front air control. Refer to
.
NG
>> GO TO 7.
7.
CHECK PBR FEEDBACK CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (driver) connector and front
air control connector.
3.
Check continuity between air mix door motor (driver) harness
connector M147 terminal 2 and front air control harness connec-
tor M49 terminal 22.
OK or NG
OK
>> Replace air mix door motor (driver). Refer to
"FRONT AIR MIX DOOR MOTOR (DRIVER)"
NG
>> Repair or replace harness as necessary.
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (PASSENGER)
1.
CHECK RESULT FROM FRONT AIR CONTROL SELF-DIAGNOSIS
Perform A/C system self-diagnosIs. Refer to
ATC-50, "A/C System Self-diagnosis Function"
Is self-diagnosis code 22 present?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK POWER SUPPLY CIRCUIT FOR AIR MIX DOOR MOTOR (PASSENGER)
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector and air mix door motor
(passenger) connector.
3.
Check continuity between front air control harness connector
M49 terminal 15 and 16 and air mix door motor (passenger) har-
ness connector M143 terminal 6 and 5.
OK or NG
OK
>> Replace air mix door motor (passenger). Refer to
149, "FRONT AIR MIX DOOR MOTOR (PASSENGER)"
.
NG
>> Repair or replace harness as necessary.
22 - Ground
: Approx. 0V - 5V
WJIA1096E
2 - 22
Continuity should exist.
WJIA1248E
15 - 6
Continuity should exist.
16 - 5
Continuity should exist.
WJIA1097E
TROUBLE DIAGNOSIS
ATC-69
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ATC
2007 Pathfinder
3.
CHECK PBR REFERENCE SIGNAL VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (passenger) connector.
3.
Turn ignition switch ON.
4.
Check voltage between air mix door motor (passenger) harness
connector M143 terminal 1 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
CHECK PBR REFERENCE VOLTAGE CIRCUIT BETWEEN AIR MIX DOOR (PASSENGER) AND
FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (passenger) har-
ness connector M143 (B) terminal 1 and front air control harness
connector M49 (A) terminal 23.
OK or NG
OK
>> Replace front air control. Refer to
.
NG
>> Repair or replace harness as necessary.
5.
CHECK PBR GROUND REFERENCE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (passenger) har-
ness connector M143 (B) terminal 3 and front air control harness
connector M49 (A) terminal 26.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace harness as necessary.
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Air mix door motor
(passenger) con-
nector
Terminal No.
M143
1
Ground
Air mix door
(passenger)
5V
WJIA1682E
A
B
Connector
Terminal Connector
Terminal
Continuity
Front air control:
M49
23
Air mix door motor
(passenger):
M143
1
Yes
WJIA1656E
A
B
Connector
Terminal Connector
Terminal
Continuity
Front air control:
M49
26
Air mix door motor
(passenger):
M143
3
Yes
WJIA1650E
ATC-70
TROUBLE DIAGNOSIS
2007 Pathfinder
6.
CHECK PBR FEEDBACK SIGNAL
1.
Reconnect the front air control connector and air mix door motor
(passenger) connector.
2.
Turn ignition switch ON.
3.
Check voltage between front air control harness connector M50
terminal 36 and ground.
4.
Rotate passenger temperature control dial through complete
range.
OK or NG
OK
>> Replace front air control. Refer to
.
NG
>> GO TO 7.
7.
CHECK PBR FEEDBACK CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (passenger) connector and
front air control connector.
3.
Check continuity between air mix door motor (passenger) har-
ness connector M143 terminal 2 and front air control harness
connector M50 terminal 36.
OK or NG
OK
>> Replace air mix door motor (passenger). Refer to
149, "FRONT AIR MIX DOOR MOTOR (PASSENGER)"
.
NG
>> Repair or replace harness as necessary.
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (REAR)
1.
CHECK RESULT FROM FRONT AIR CONTROL SELF-DIAGNOSIS
Perform A/C system self-diagnosIs. Refer to
ATC-50, "A/C System Self-diagnosis Function"
.
Is self-diagnosis code 38 present?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK POWER SUPPLY CIRCUIT FOR AIR MIX DOOR MOTOR (REAR)
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector and air mix door motor
(rear) connector.
3.
Check continuity between front air control harness connector
M49 terminal 17 and air mix door motor (rear) harness connec-
tor B155 terminal 6 and between front air control harness con-
nector M49 terminal 18 and air mix door motor (rear) harness
connector B155 terminal 1.
OK or NG
OK
>> Replace air mix door motor (rear). Refer to
ATC-150, "REAR AIR MIX DOOR MOTOR"
.
NG
>> Repair or replace harness as necessary.
36 - Ground
: Approx. 0 - 5V
WJIA1249E
2 - 36
: Continuity should exist.
WJIA1101E
17 - 6
Continuity should exist.
18 - 1
Continuity should exist.
WJIA1102E
TROUBLE DIAGNOSIS
ATC-71
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B
ATC
2007 Pathfinder
3.
CHECK PBR REFERENCE SIGNAL VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (rear) connector.
3.
Turn ignition switch ON.
4.
Check voltage between air mix door motor (rear) harness con-
nector B155 terminal 3 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
CHECK PBR REFERENCE VOLTAGE CIRCUIT BETWEEN AIR MIX DOOR MOTOR (REAR) AND
FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (rear) harness con-
nector B155 terminal 3 and front air control harness connector
M49 terminal 23.
OK or NG
OK
>> Replace front air control. Refer to
NG
>> Repair or replace harness as necessary.
5.
CHECK PBR GROUND REFERENCE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the front air control connector.
3.
Check continuity between air mix door motor (rear) harness con-
nector B155 terminal 2 and front air control harness connector
M49 terminal 26.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace harness as necessary.
6.
CHECK PBR FEEDBACK SIGNAL
1.
Reconnect the front air control connector and air mix door motor
(rear) connector.
2.
Turn ignition switch ON.
3.
Check voltage between front air control harness connector M49
terminal 25 and ground.
4.
Rotate rear temperature and mode control dial through complete
range.
OK or NG
OK
>> Replace front air control. Refer to
NG
>> GO TO 7.
3 - Ground
: Approx. 5V
LJIA0050E
3 - 23
Continuity should exist.
WJIA1103E
2 - 26
Continuity should exist.
WJIA1104E
25 - Ground
: Approx. 0 - 5V
WJIA1105E
ATC-72
TROUBLE DIAGNOSIS
2007 Pathfinder
7.
CHECK PBR FEEDBACK CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the air mix door motor (rear) connector and front air
control connector.
3.
Check continuity between air mix door motor (rear) harness con-
nector B155 terminal 4 and front air control harness connector
M49 terminal 25.
OK or NG
OK
>> Replace air mix door motor (rear). Refer to
NG
>> Repair or replace harness as necessary.
4 - 25
Continuity should exist.
WJIA1106E
TROUBLE DIAGNOSIS
ATC-73
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ATC
2007 Pathfinder
Intake Door Motor Circuit
EJS004P7
SYMPTOM:
●
Intake door does not change.
●
Intake door motor does not operate normally.
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC (
)
1.
Press the mode switch to panel mode(
).
2.
Press REC (
) switch. The REC (
) indicator should illuminate.
3.
Press REC (
) switch again. The REC (
) indicator should go out.
4.
Listen for intake door position change (you should hear blower sound change slightly).
Can a symptom be duplicated?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Refer to
Can a symptom be duplicated?
YES
>> Refer to
NO
>> System OK.
3.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.
CHECK INTAKE DOOR OPERATION
Check and verify intake door mechanism for smooth operation.
OK or NG
OK
>> GO TO 5.
NG
>> Repair intake door mechanism.
5.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis to check for any codes. Refer to
ATC-50, "A/C System Self-diagnosis Function"
Are any self-diagnosis codes present?
YES
>> Refer to
ATC-51, "SELF-DIAGNOSIS CODE CHART"
NO
>> GO TO 6.
6.
RECHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to
ATC-52, "Operational Check (Front)"
Does another symptom exist?
YES
>> Refer to
NO
>> Replace front air control. Refer to
.
ATC-74
TROUBLE DIAGNOSIS
2007 Pathfinder
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
●
Front air control
●
Intake door motor
●
In-vehicle sensor
●
Ambient sensor
●
Optical sensor
●
Intake sensor
System Operation
The intake door control determines the intake door position based on the position of the recirculation switch.
When the recirculation switch is depressed the intake door motor rotates closing off the fresh air inlet and
recirculating the cabin air. If the recirculation switch is depressed again, the intake door motor rotates in the
opposite direction, again allowing fresh air into the cabin.
In the AUTO mode, the front air control determines the intake door position based on the ambient tempera-
ture, the intake air temperature and the in-vehicle temperature. When the DEFROST, or OFF switches are
pushed or A/C switch is OFF, the front air control sets the intake door at the fresh position.
Intake Door Control Specification
WJIA1352E
WJIA0436E
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