Nissan Pathfinder (2007 year). Instruction — part 56
TROUBLE DIAGNOSIS
ATC-99
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2007 Pathfinder
2.
PERFORM AUTO ACTIVE TEST
Refer to
.
Does magnet clutch operate?
YES or NO
YES
>>
●
WITH CONSULT-II
GO TO 5.
●
WITHOUT CONSULT-II
GO TO 6.
NO
>> Check 10A fuse (No. 42, located in IPDM E/R), and GO TO 3.
3.
CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector and compressor (magnet
clutch) connector.
3.
Check continuity between IPDM E/R harness connector E119
terminal 11 and compressor harness connector F3 terminal 1.
OK or NG
OK
>> GO TO 4.
NG
>> Repair harness or connector.
4.
CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK
>> Replace IPDM E/R. Refer to
NG
>> Replace magnet clutch. Refer to
and Installation for Compressor Clutch"
5.
CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal. Refer to
.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 6.
11 – 1
: Continuity should exist.
WJIA0560E
SJIA0197E
A/C SW ON
: COMP ON SIG ON
A/C SW OFF
: COMP ON SIG OFF
WJIA0469E
ATC-100
TROUBLE DIAGNOSIS
2007 Pathfinder
6.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and front air control connector.
3.
Check continuity between BCM harness connector M18 terminal
27 and front air control harness connector M49 terminal 10.
OK or NG
OK
>> GO TO 7.
NG
>> Repair harness or connector.
7.
CHECK VOLTAGE FOR FRONT AIR CONTROL (COMPRESSOR ON SIGNAL)
1.
Reconnect BCM connector and front air control connector.
2.
Turn ignition switch ON.
3.
Check voltage between front air control harness connector M49
terminal 10 and ground.
OK or NG
OK
>> GO TO 8.
NG-1
>> If the voltage is approx. 5V when A/C switch is ON, replace front air control. Refer to
NG-2
>> If the voltage is approx. 0V when A/C switch is OFF, replace BCM. Refer to
27 - 10
Continuity should exist.
WJIA1136E
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Front air
control con-
nector
Terminal No.
M49
10
Ground
A/C switch: ON
0V
A/C switch: OFF
5V
WJIA1137E
TROUBLE DIAGNOSIS
ATC-101
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2007 Pathfinder
8.
CHECK REFRIGERANT PRESSURE SENSOR
WITH CONSULT-II
1.
Start engine.
2.
Check voltage of refrigerant pressure sensor. Refer to
ATC-34, "CONSULT-II Function (BCM)"
WITHOUT CONSULT-II
1.
Start engine.
2.
Check voltage between ECM harness connector F54 terminal
70 and ground.
OK or NG
OK
>>
●
WITH CONSULT-II
GO TO 9.
●
WITHOUT CONSULT-II
GO TO 10.
NG
>> Refer to
EC-656, "REFRIGERANT PRESSURE SENSOR"
9.
CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer to
.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 10.
10.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and front air control connector.
3.
Check continuity between BCM harness connector M18 terminal
28 and front air control harness connector M50 terminal 35.
OK or NG
OK
>> GO TO 11.
NG
>> Repair harness or connector.
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
ECM con-
nector
Terminal No.
F54
70
Ground
A/C switch: ON
0.36 - 3.88V
LJIA0124E
FRONT BLOWER CONTROL
DIAL ON
: FAN ON SIG ON
FRONT BLOWER CONTROL
DIAL OFF
: FAN ON SIG OFF
WJIA0469E
28 - 35
Continuity should exist.
WJIA1138E
ATC-102
TROUBLE DIAGNOSIS
2007 Pathfinder
11.
CHECK VOLTAGE FOR FRONT AIR CONTROL (FAN ON SIGNAL)
1.
Reconnect BCM connector and front air control connector.
2.
Turn ignition switch ON.
3.
Check voltage between front air control harness connector M50
terminal 35 and ground.
OK or NG
OK
>> GO TO 12.
NG-1
>> If the voltage is approx. 5V when blower motor is ON, replace front air control. Refer to
NG-2
>> If the voltage is approx. 0V when blower motor is OFF, replace BCM. Refer to
12.
CHECK CAN COMMUNICATION
Check CAN communication. Refer to
.
●
BCM – ECM
●
ECM – IPDM E/R
●
ECM – Front air control
OK or NG
OK
>> Inspection End.
NG
>> Repair or replace malfunctioning part(s).
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Front air con-
trol connector
Terminal No.
M50
35
Ground
A/C switch: ON
Blower motor
operates
0V
A/C switch: OFF
5V
WJIA1139E
TROUBLE DIAGNOSIS
ATC-103
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2007 Pathfinder
Insufficient Cooling
EJS004PC
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1.
Press the AUTO switch.
2.
Turn temperature control dial (driver) counterclockwise until 16
°
C (60
°
F) is displayed.
3.
Check for cold air at discharge air outlets.
Can the symptom be duplicated?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK 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
>> System OK.
3.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
4.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to
ATC-50, "A/C System Self-diagnosis Function"
OK or NG
OK
>> GO TO 5.
NG
>> Refer to
ATC-51, "SELF-DIAGNOSIS CODE CHART"
5.
CHECK DRIVE BELTS
Check compressor belt tension. Refer to
.
OK or NG
OK
>> GO TO 6.
NG
>> Adjust or replace compressor belt. Refer to
EM-14, "Removal and Installation"
6.
CHECK AIR MIX DOOR OPERATION
Check and verify air mix door mechanism for smooth operation.
Does air mix door operate correctly?
YES
>> GO TO 7.
NO
>> Repair or replace air mix door control linkage.
7.
CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation. Refer to
Does cooling fan motor operate correctly?
YES
>> GO TO 8.
NO
>> Check cooling fan motor. Refer to
ATC-104
TROUBLE DIAGNOSIS
2007 Pathfinder
8.
CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE
Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/
recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.
>> GO TO 9.
9.
CHECK REFRIGERANT PURITY
1.
Connect recovery/recycling equipment to vehicle.
2.
Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
OK or NG
OK
>> GO TO 10.
NG
>> Check contaminated refrigerant. Refer to
ATC-5, "Contaminated Refrigerant"
10.
CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES
>> Perform performance test diagnoses. Refer to
ATC-105, "PERFORMANCE TEST DIAGNOSES"
.
NO
>> GO TO 11.
11.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to
OK or NG
OK
>> Perform performance test diagnoses. Refer to
ATC-105, "PERFORMANCE TEST DIAGNOSES"
NG
>> GO TO 12.
12.
CHECK AIR DUCTS
Check ducts for air leaks.
OK or NG
OK
>> System OK.
NG
>> Repair air leaks.
TROUBLE DIAGNOSIS
ATC-105
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2007 Pathfinder
PERFORMANCE TEST DIAGNOSES
*1
*2
*3
ATC-108, "Trouble Diagnoses for
Unusual Pressure"
*4
ATC-63, "Air Mix Door Motor Circuit"
RJIA1601E
ATC-106
TROUBLE DIAGNOSIS
2007 Pathfinder
*1
ATC-163, "Removal and Installation
for Compressor Clutch"
*2
ATC-76, "Front Blower Motor Circuit"
*3
WJIA1371E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст