Nissan Pathfinder (2005 year). Instruction — part 451
TROUBLE DIAGNOSIS FOR SYSTEM
TF-227
[TX15B]
C
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TF
2005 Pathfinder
DIAGNOSTIC PROCEDURE
1.
CHECK 4LO POSITION SWITCH SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3.
Read out the value of “4L POSI SW”.
Without CONSULT-II
1.
Start engine.
2.
Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND 4LO SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector and the 4LO switch harness connector.
3.
Check continuity between transfer control unit harness connec-
tor M152 terminal 24 and 4LO switch harness connector F60
terminal 13.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
Condition
Display value
●
Vehicle stopped
●
Engine running
●
A/T selector lever “N” position
●
Brake pedal depressed
4WD shift switch: 4LO
ON
Except the above
OFF
PDIA0220E
Connector
Terminal
(Wire
color)
Condition
Voltage
(Approx.)
E142
24 -
Ground
●
Vehicle stopped
●
Engine running
●
A/T selector lever
“N” position
●
Brake pedal
depressed
4WD shift switch: 4LO
0V
Except the above
Battery
voltage
PDIA0201E
Continuity should exist.
PDIA0202E
TF-228
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect 4LO switch harness connector.
3.
Check continuity between 4LO switch harness connector F60
terminal 12 and ground.
Also check harness for short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to power in harness or con-
nectors.
4.
CHECK 4LO SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect 4LO switch harness connector.
3.
Remove 4LO switch. Refer to
TF-202, "Location of Electrical Parts"
.
4.
Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.
OK or NG
OK
>> GO TO 5.
NG
>> Replace 4LO switch.
Refer to
.
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
TF-210, "Transfer Control Unit Input/Output Signal
.
OK or NG
OK
>> GO TO 6.
NG
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
6.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK
>> Inspection End.
NG
>> Replace transfer control unit. Refer to
TF-267, "Removal and Installation"
.
Continuity should exist.
PDIA0203E
Terminal
Condition
Continuity
12 - 13
Push 4LO switch
Yes
Release 4LO switch
No
PDIA0204E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-229
[TX15B]
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A
B
TF
2005 Pathfinder
COMPONENT INSPECTION
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect 4LO switch harness connector.
3.
Remove 4LO switch. Refer to
TF-202, "Location of Electrical Parts"
.
4.
Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.
5.
If NG, replace the 4LO switch.
4WD Shift Switch
EDS001LB
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
Terminal
Condition
Continuity
12 - 13
Push 4LO switch
Yes
Release 4LO switch
No
PDIA0204E
Monitored item [Unit]
Content
Condition
Display value
2WD SWITCH [ON/
OFF]
Input condition from 4WD
shift switch
4WD shift switch: 2WD
ON
4WD shift switch: 4H and 4LO
OFF
4H SWITCH [ON/OFF]
Input condition from 4WD
shift switch
4WD shift switch: 4H
ON
4WD shift switch: 2WD and 4LO
OFF
4L SWITCH [ON/OFF]
Input condition from 4WD
shift switch
4WD shift switch: 4LO
ON
4WD shift switch: 2WD and 4H
OFF
4WD MODE [2H/4H/4L]
Control status of 4WD
(Output condition of 4WD
shift indicator lamp and
4LO indicator lamp)
4WD shift switch
(Engine running)
2WD
2H
4H
4H
4LO
4L
Terminal
Wire
color
Item
Condition
Data (Approx.)
14
G
4WD shift switch (2WD)
Ignition switch: ON
4WD shift switch: 2WD
Battery voltage
4WD shift switch: 4H and 4LO
0V
15
O
4WD shift switch (4H)
4WD shift switch: 4H
Battery voltage
4WD shift switch: 2WD and 4LO
0V
16
W
4WD shift switch (4LO)
4WD shift switch: 4LO
Battery voltage
4WD shift switch: 2WD and 4H
0V
TF-230
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
DIAGNOSTIC PROCEDURE
1.
CHECK 4WD SHIFT SWITCH SIGNAL
With CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3.
Read out ON/OFF switching action of the “2WD SWITCH”, “4H
SWITCH”, “4L SWITCH” with operating 4WD shift switch.
Without CONSULT-II
1.
Turn ignition switch “ON”.
2.
Check voltage between transfer control unit harness connector
terminals and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
SDIA2382E
Connector
Terminal
(Wire color)
Condition
Voltage
(Approx.)
M152
14 - Ground
4WD shift switch: 2WD
Battery voltage
4WD shift switch: 4H and 4LO
0V
15 - Ground
4WD shift switch: 4H
Battery voltage
4WD shift switch: 2WD and 4LO
0V
16 - Ground
4WD shift switch: 4LO
Battery voltage
4WD shift switch: 2WD and 4H
0V
PDIA0209E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-231
[TX15B]
C
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F
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A
B
TF
2005 Pathfinder
2.
CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect 4WD shift switch harness connector.
3.
Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.
4.
Turn ignition switch “ON”. (Do not start engine.)
5.
Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> 1. Check harness for short or open between 4WD shift
switch harness connector terminal 1 and transfer shut
off relay 2 harness connector E157 terminal 5 and
10A fuse (No. 61 located in the fuse block). If any items are damaged, repair or replace dam-
aged parts.
2. Perform trouble diagnosis for power supply circuit. Refer to
TF-221, "Power Supply Circuit For
.
3.
CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER CONTROL UNIT
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector and the 4WD shift switch harness connector.
3.
Check continuity between the following terminals.
–
Transfer control unit harness connector M152 terminal 14 and
4WD shift switch harness connector M141 terminal 3.
–
Transfer control unit harness connector M152 terminal 15 and
4WD shift switch harness connector M141 terminal 5.
–
Transfer control unit harness connector M152 terminal 16 and
4WD shift switch harness connector M141 terminal 6.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
Connector
Terminal (Wire color)
Voltage (Approx.)
M141
1 - Ground
0V
SDIA2803E
Connector
Terminal (Wire color)
Voltage (Approx.)
M141
1 - Ground
Battery voltage
SDIA2802E
Continuity should exist.
SDIA2804E
TF-232
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
4.
CHECK 4WD SHIFT SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Remove 4WD shift switch harness connector.
3.
Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
OK or NG
OK
>> GO TO 5.
NG
>> Replace 4WD shift switch.
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
TF-210, "Transfer Control Unit Input/Output Signal
.
OK or NG
OK
>> GO TO 6.
NG
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
6.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK
>> Inspection End.
NG
>> Replace transfer control unit. Refer to
TF-267, "TRANSFER CONTROL UNIT"
.
Terminal
Condition
Continuity
1 - 3
4WD shift switch: 2WD
Yes
4WD shift switch: 4H and 4LO
No
1 - 5
4WD shift switch: 4H
Yes
4WD shift switch: 2WD and 4LO
No
1 - 6
4WD shift switch: 4LO
Yes
4WD shift switch: 2WD and 4H
No
SDIA2805E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-233
[TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
TF
2005 Pathfinder
COMPONENT INSPECTION
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Remove 4WD shift switch harness connector.
3.
Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
4.
If NG, replace the 4WD shift switch.
Wait Detection Switch
EDS001LC
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
Terminal
Condition
Continuity
1 - 3
4WD shift switch: 2WD
Yes
4WD shift switch: 4H and 4LO
No
1 - 5
4WD shift switch: 4H
Yes
4WD shift switch: 2WD and 4LO
No
1 - 6
4WD shift switch: 4LO
Yes
4WD shift switch: 2WD and 4H
No
SDIA2805E
Monitored item
Content
Condition
Display value
WAIT DETCT SW [ON/
OFF]
Condition of wait detection
switch
●
Vehicle stopped
●
Engine running
●
A/T selector lever “N”
position
●
Brake pedal depressed
4WD shift switch
: 4H and 4LO
ON
4WD shift switch: 2WD
OFF
Terminal
Wire
color
Item
Condition
Data (Approx.)
17
O
Wait detection switch
●
Vehicle stopped
●
Engine running
●
A/T selector
lever “N” position
●
Brake pedal
depressed
4WD shift switch: 4H and 4LO
0V
4WD shift switch: 2WD
Battery voltage
TF-234
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
DIAGNOSTIC PROCEDURE
1.
CHECK WAIT DETECTION SWITCH SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3.
Read out the value of “WAIT DETCT SW”.
Without CONSULT-II
1.
Start engine.
2.
Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector and the wait detection switch harness connector.
3.
Check continuity between transfer control unit harness connec-
tor M152 terminal 17 and wait detection switch harness connec-
tor F59 terminal 10.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
Condition
Display value
●
Vehicle stopped
●
Engine running
●
A/T selector lever “N” position
●
Brake pedal depressed
4WD shift switch: 4H and 4LO
ON
4WD shift switch: 2WD
OFF
PDIA0221E
Connector
Terminal
(Wire
color)
Condition
Voltage
(Approx.)
E142
17 -
Ground
●
Vehicle stopped
●
Engine running
●
A/T selector lever
“N” position
●
Brake pedal
depressed
4WD shift switch
: 4H and 4LO
0V
4WD shift switch: 2WD
Battery
voltage
PDIA0205E
Continuity should exist.
PDIA0206E
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