Nissan Pathfinder (2007 year). Instruction — part 421
TROUBLE DIAGNOSIS FOR SYSTEM
TF-249
[TX15B]
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2007 Pathfinder
DIAGNOSTIC PROCEDURE
1.
CHECK POWER SUPPLY
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector.
3.
Check voltage between transfer control unit harness connector
terminal and ground.
4.
Turn ignition switch “ON”. (Do not start engine.)
5.
Check voltage between transfer control unit harness connector
terminals and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following. If any items are damaged, repair or
replace damaged parts.
●
10A fuse (No. 57, located in the fuse and relay block).
●
40A fuse (No. j , located in the fuse and fusible link box).
●
Harness for short or open between battery and transfer shut off relay 1 harness connector E156
terminal 3.
●
Harness for short or open between transfer control unit harness connector M153 terminal 27
and transfer shut off relay 1 harness connector E156 terminal 5.
●
Harness for short or open between ignition switch and transfer shut off relay 1 harness connec-
tor E156 terminal 1.
●
Harness for short or open between transfer shut off relay 1 harness connector E156 terminal 2
and ground.
●
Harness for short or open between ignition switch and transfer control unit harness connector
M152 terminal 25.
●
Battery and ignition switch. Refer to
PG-4, "POWER SUPPLY ROUTING CIRCUIT"
.
●
Transfer shut off relay 1. Refer to
TF-225, "COMPONENT INSPECTION"
.
Connector
Terminal
Voltage (Approx.)
M152
25 - Ground
0V
M153
27 - Ground
SDIA3371E
Connector
Terminal
Voltage (Approx.)
M152
25 - Ground
Battery voltage
M153
27 - Ground
SDIA3372E
TF-250
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2007 Pathfinder
2.
CHECK GROUND CIRCUIT
1.
Turn ignition switch "OFF".
2.
Disconnect transfer control unit harness connector.
3.
Check continuity between transfer control unit harness connec-
tor M153 terminal 32 and ground.
Also check harness for short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to power in harness or con-
nectors.
3.
CHECK POWER SUPPLY SIGNAL
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Connect transfer control unit harness connector.
3.
Check voltage between transfer control unit harness connector
terminal and ground.
4.
Turn ignition switch “ON”. (Do not start engine.)
5.
Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check the following. If any items are damaged, repair or
replace damaged parts.
●
Harness for short or open between battery and trans-
fer shut off relay 2 harness connector E157 terminal 1.
●
Harness for short or open between transfer shut off relay 2 harness connector E157 terminal 2
and transfer control unit harness connector M153 terminal 40.
●
Transfer shut off relay 2. Refer to
TF-225, "COMPONENT INSPECTION"
4.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
TF-211, "Transfer Control Unit Input/Output Signal Ref-
OK or NG
OK-1
>> With CONSULT-II: GO TO 5.
OK-2
>> Without CONSULT-II: 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.
Continuity should exist.
SDIA2818E
Connector
Terminal
Voltage (Approx.)
M153
40 - Ground
Battery voltage
SDIA2819E
Connector
Terminal
Voltage (Approx.)
M153
40 - Ground
0V
SDIA2820E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-251
[TX15B]
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2007 Pathfinder
5.
PERFORM SELF-DIAGNOSIS (WITH CONSULT-II)
With CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3.
Touch “ERASE”.
4.
Turn ignition switch “OFF” and wait at least 10 seconds.
5.
Perform the self-diagnosis again.
Is the “SHIFT ACT CIR [P1819]” displayed?
YES
>> Replace transfer control unit. Refer to
TF-268, "TRANSFER CONTROL UNIT"
NO
>> Inspection End.
6.
PERFORM SELF-DIAGNOSIS (WITHOUT CONSULT-II)
Without CONSULT-II
1.
Perform the self-diagnosis and then erase self-diagnostic results. Refer to
PROCEDURE (WITHOUT CONSULT-II)"
TF-221, "ERASE SELF-DIAGNOSIS"
2.
Perform the self-diagnosis again.
Do the self-diagnostic results indicate transfer control device?
YES
>> Replace transfer control unit. Refer to
TF-268, "TRANSFER CONTROL UNIT"
NO
>> Inspection End.
Engine Speed Signal
EDS0038L
DIAGNOSTIC PROCEDURE
1.
CHECK DTC WITH ECM
Perform self-diagnosis with ECM. Refer to
EC-117, "SELF-DIAG RESULTS MODE"
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
TF-211, "Transfer Control Unit Input/Output Signal Ref-
.
OK or NG
OK
>> GO TO 3.
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.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK
>> Inspection End.
NG
>> Perform self-diagnosis with ECM again. Refer to
EC-117, "SELF-DIAG RESULTS MODE"
.
TF-252
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2007 Pathfinder
CAN Communication Line
EDS0038M
DIAGNOSTIC PROCEDURE
1.
CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1.
Turn ignition switch “ON” and start engine.
2.
Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with in CONSULT-II.
3.
Perform the self-diagnosis.
Is the “CAN COMM CIRCUIT [U1000]” displayed?
YES
>> Print out CONSULT-II screen and go to
.
NO
>> Inspection End
ATP Switch
EDS0038N
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.
SDIA2390E
Monitored item [Unit]
Content
Condition
Display value
ATP SWITCH [ON/OFF]
Condition of ATP switch
●
Vehicle stopped
●
Engine running
●
A/T selector lever “N”
position
●
Brake pedal depressed
4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is
operating.)
ON
Except the above
OFF
Terminal
Wire
color
Item
Condition
Data (Approx.)
23
R
ATP switch
●
Vehicle stopped
●
Engine running
●
A/T selector
lever “N” position
●
Brake pedal
depressed
4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is operating.)
0V
Except the above
Battery voltage
TROUBLE DIAGNOSIS FOR SYSTEM
TF-253
[TX15B]
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2007 Pathfinder
DIAGNOSTIC PROCEDURE
1.
CHECK ATP 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 “ATP SWITCH”.
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 ATP SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect transfer control unit harness connector and the ATP switch harness connector.
3.
Check continuity between transfer control unit harness connec-
tor M152 terminal 23 and ATP switch harness connector F55
terminal 8.
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 to 4LO or 4LO to 4H
(While actuator motor is operating.)
ON
Except the above
OFF
SDIA2391E
Connector
Terminal
Condition
Voltage
(Approx.)
M152
23 -
Ground
●
Vehicle stopped
●
Engine running
●
A/T selector lever
“N” position
●
Brake pedal
depressed
4WD shift switch: 4H
to 4LO or 4LO to 4H
(While actuator motor
is operating.)
0V
Except the above
Battery
voltage
SDIA3375E
Continuity should exist.
SDIA3376E
TF-254
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2007 Pathfinder
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect ATP switch harness connector.
3.
Check continuity between ATP switch harness connector F55
terminal 9 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 ATP SWITCH
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
TF-202, "Location of Electrical Parts"
.
3.
Push and release ATP switch and check continuity between ATP
switch terminals 8 and 9.
OK or NG
OK
>> GO TO 5.
NG
>> Replace ATP switch. Refer to
.
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
TF-211, "Transfer Control Unit Input/Output Signal Ref-
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 ATP WARNING LAMP
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
A/T selector lever “N” position and engage the parking brake.
3.
Switch 4WD shift switch from 4H to 4LO or 4LO to 4H.
Does ATP warning lamp “ON”, while actuator motor is operating?
YES
>> Inspection End.
NO
>> Go to
TF-264, "ATP Warning Lamp Does Not Turn ON"
Continuity should exist.
SDIA2394E
Terminal
Condition
Continuity
8 - 9
Push ATP switch
Yes
Release ATP switch
No
SDIA2395E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-255
[TX15B]
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TF
2007 Pathfinder
COMPONENT INSPECTION
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Disconnect ATP switch harness connector.
3.
Remove ATP switch. Refer to
TF-202, "Location of Electrical Parts"
.
4.
Push and release ATP switch and check continuity between ATP
switch terminals 8 and 9.
5.
If NG, replace the ATP switch. Refer to
Terminal
Condition
Continuity
8 - 9
Push ATP switch
Yes
Release ATP switch
No
SDIA2395E
TF-256
[TX15B]
TROUBLE DIAGNOSIS FOR SYMPTOMS
2007 Pathfinder
TROUBLE DIAGNOSIS FOR SYMPTOMS
PFP:00007
4WD Shift Indicator Lamp and 4LO Indicator Lamp Do Not Turn ON
EDS0038O
SYMPTOM:
4WD shift indicator lamp and 4LO indicator lamp do not turn ON for approx. 1 second when turning
ignition switch to “ON”.
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