Nissan Pathfinder (2005 year). Instruction — part 450
TROUBLE DIAGNOSIS
TF-219
[TX15B]
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2005 Pathfinder
flickering according to the self-diagnostic results. As for the details of the 4WD warning lamp flickering pat-
terns, refer to
TF-219, "Diagnostic Procedure"
.
Diagnostic Procedure
1.
Warn up engine.
2.
Turn ignition switch “ON” and “OFF” at least twice, and then turn ignition switch “OFF”.
3.
Move A/T selector lever to “P” position.
4.
Turn 4WD shift switch to “2WD” position.
5.
Turn ignition switch “ON”. (Do not start engine.)
6.
4WD warning lamp ON.
If 4WD warning lamp does not turn ON, refer to
TF-258, "4WD Warning Lamp Does Not Turn ON"
.
7.
Move A/T selector lever to “R” position.
8.
Turn 4WD shift switch to “2WD”, “4H” and “2WD” in order.
9.
Move A/T selector lever to “P” position.
10. Turn 4WD shift switch to “4H”, “2WD” and “4H” in order.
11. Move A/T selector lever to “N” position.
12. Turn 4WD shift switch to “2WD” position.
13. Move A/T selector lever to “P” position.
14. Read the flickering of 4WD warning lamp.
Refer to
TF-219, "Judgement Self-diagnosis"
.
Judgement Self-diagnosis
When a malfunction is detected, the malfunction route is indicated by flickering of the 4WD warning lamp.
PDIA0227E
Flickering pattern or
flickering condition
Items
Diagnostic item is detected when...
Check item
2
Output shaft revolution
signal (from TCM)
●
Malfunction is detected in output shaft revolution signal
that is output from TCM through CAN communication.
●
Improper signal is input while driving.
TF-224, "Output Shaft
Revolution Signal
(TCM)"
3
Vehicle speed signal
(from ABS)
●
Malfunction is detected in vehicle speed signal that is
output from ABS actuator and electric unit (control unit)
through CAN communication.
●
Improper signal is input while driving.
TF-225, "Vehicle
Speed Sensor (ABS)"
4
CAN communication
Malfunction has been detected from CAN communication.
TF-251, "CAN Commu-
nication Line"
5
AD converter
AD converter system of transfer control unit is malfunc-
tioning.
TF-224, "Transfer Con-
trol Unit"
6
4LO switch
Improper signal from 4LO switch is input due to open or
short circuit.
7
Engine speed signal
●
Malfunction is detected in engine speed signal that is
output from ECM through CAN communication.
●
Improper signal is input while driving.
TF-220
[TX15B]
TROUBLE DIAGNOSIS
2005 Pathfinder
NOTE:
If “actuator position switch” or “transfer control device” is displayed, first erase self-diagnostic results. (They may be displayed after
installing transfer control unit or transfer assembly.)
ERASE SELF-DIAGNOSIS
●
In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.
●
However, this information is erased by turning ignition switch “OFF” after performing self-diagnostics or by
erasing the memory using the CONSULT-II.
8
Power supply
Power supply voltage for transfer control unit is abnor-
mally low while driving.
TF-221, "Power Sup-
ply Circuit For Transfer
Control Unit"
9
4WD shift switch
More than two switch inputs are simultaneously detected
due to short circuit of 4WD shift switch.
10
Wait detection switch
Improper signal from wait detection switch is input due to
open or short circuit.
TF-233, "Wait Detec-
tion Switch"
11
Actuator motor
●
Motor does not operate properly due to open or short
circuit in actuator motor.
●
Malfunction is detected in the actuator motor. (When
4WD shift switch is operated and actuator motor is not
operated.)
●
Malfunction is detected in transfer relay 1 and transfer
relay 2.
12
Actuator position switch
●
Improper signal from actuator position switch is input
due to open or short circuit.
●
Malfunction is detected in the actuator position switch.
TF-244, "Actuator Posi-
tion Switch"
13
Transfer control device
●
Malfunction is detected in transfer shut off relay 1 and
transfer shut off 2.
●
Malfunction occurs in transfer control device drive cir-
cuit.
TF-221, "Power Sup-
ply Circuit For Transfer
Control Unit"
14
PNP switch signal
When A/T PNP switch signal is malfunction or communi-
cation error between the vehicles.
Repeats flickering
every 0.25 sec.
Data erase display
●
Power supply failure of memory back-up.
●
Battery is disconnected for a long time.
●
Battery performance is poor.
TF-221, "Power Sup-
ply Circuit For Transfer
Control Unit"
Repeats flickering
every 2 to 5 sec.
—
Circuits that the self-diagnosis covers have no malfunc-
tion.
—
No flickering
PNP switch or 4WD
shift switch
PNP switch or 4WD shift switch circuit is shorted or open.
or
Flickering pattern or
flickering condition
Items
Diagnostic item is detected when...
Check item
TROUBLE DIAGNOSIS FOR SYSTEM
TF-221
[TX15B]
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2005 Pathfinder
TROUBLE DIAGNOSIS FOR SYSTEM
PFP:00000
Power Supply Circuit For Transfer Control Unit
EDS001L6
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.
Monitored item [Unit]
Content
Condition
Display value
BATTERY VOLT [V]
Power supply voltage for
transfer control unit
Ignition switch: ON
Battery voltage
Terminal
Wire
color
Item
Condition
Data (Approx.)
6
B
Ground
Always
0V
18
B
Ground
Always
0V
19
R
Power supply
(Memory back-up)
Ignition switch: ON
Battery voltage
Ignition switch: OFF
Battery voltage
25
W/G
Ignition switch monitor
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0V
32
B
Actuator motor ground
Always
0V
40
V
Transfer shut off relay
Ignition switch: ON
0V
Ignition switch: OFF (Five seconds after ignition switch is turned
OFF)
Battery voltage
44
Y
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF (Five seconds after ignition switch is turned
OFF)
0V
45
GR
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF (Five seconds after ignition switch is turned
OFF)
0V
TF-222
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 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
terminals 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.
●
40A fuse (No. j , located in the fuse and fusible link box). Refer to
.
●
10A fuses (No. 21, located in the fuse block-junction block (J/B) and 60 and 61 located in the
fuse and relay box). Refer to
PG-4, "POWER SUPPLY ROUTING CIRCUIT"
.
●
Harness for short or open between battery and transfer control unit harness connector M152
terminal 19.
●
Harness for short or open between battery and transfer shut off relay 2 harness connector E157
terminal 1 and 3.
●
Harness for short or open between battery and transfer shut off relay 1 harness connector E156
terminal 3.
●
Harness for short or open between ignition switch and transfer control unit harness connector
M152 terminal 25.
●
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 2 harness connector E157 terminal 5
and transfer control unit harness connector M153 terminals 44, 45.
●
Harness for short or open between transfer shut off relay 1 harness connector E156 terminal 5
and transfer control unit harness connector M153 terminals 44, 45.
●
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.
●
Harness for open between transfer shut off relay 1 harness connector E156 terminal 2 and
ground.
●
Battery and ignition switch. Refer to
PG-4, "POWER SUPPLY ROUTING CIRCUIT"
.
●
Transfer shut off relay 1, 2. Refer to
TF-224, "COMPONENT INSPECTION"
.
Connector
Terminal
Voltage (Approx.)
M152
19 - Ground
Battery voltage
25 - Ground
0V
M153
40 - Ground
Battery voltage
44 - Ground
0V
45 - Ground
SDIA2799E
Connector
Terminal
Voltage (Approx.)
M152
19 - Ground
Battery voltage
25 - Ground
M153
40 - Ground
44 - Ground
45 - Ground
SDIA2800E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-223
[TX15B]
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2005 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 M152 terminals 6 and 18, and 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 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 4.
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.
4.
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.
SDIA2801E
TF-224
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
COMPONENT INSPECTION
1.
Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2.
Remove transfer shut off relay 1 and transfer shut off relay 2. Refer to
TF-202, "Location of Electrical
.
3.
Apply 12V direct current between transfer shut off relay termi-
nals 1 and 2.
4.
Check continuity between relay terminals 3 and 5.
5.
If NG, replace the transfer shut off relay 1 or 2. Refer to
"Location of Electrical Parts"
.
Transfer Control Unit
EDS001L7
DIAGNOSTIC PROCEDURE
1.
INSPECTION START
Do you have CONSULT-II?
YES or NO
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
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 “CONTROL UNIT 1 [P1802]”, “CONTROL UNIT 2 [P1803]”, “CONTROL UNIT 3 [P1804]” or “CONTROL
UNIT 4 [P1809]” displayed?
YES
>> Replace transfer control unit. Refer to
TF-267, "TRANSFER CONTROL UNIT"
.
NO
>> Inspection End.
3.
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)"
and
TF-220, "ERASE SELF-DIAGNOSIS"
.
2.
Perform the self-diagnosis again.
Do the self-diagnostic results indicate AD converter?
YES
>> Replace transfer control unit. Refer to
TF-267, "TRANSFER CONTROL UNIT"
.
NO
>> Inspection End.
Output Shaft Revolution Signal (TCM)
EDS001L8
DIAGNOSTIC PROCEDURE
1.
CHECK DTC WITH TCM
Perform self-diagnosis with TCM. Refer to
AT-86, "CONSULT-II SETTING PROCEDURE"
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
Condition
Continuity
12V direct current supply between terminals 1 and 2
Yes
OFF
No
SCIA1245E
TROUBLE DIAGNOSIS FOR SYSTEM
TF-225
[TX15B]
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2005 Pathfinder
2.
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 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 TCM again. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
Vehicle Speed Sensor (ABS)
EDS001L9
DIAGNOSTIC PROCEDURE
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
(without HDC/HSA) or
(with HDC/HSA).
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-210, "Transfer Control Unit Input/Output Signal
.
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 ABS actuator and electric unit (control unit). Refer to
(without HDC/HSA) or
(with HDC/HSA).
TF-226
[TX15B]
TROUBLE DIAGNOSIS FOR SYSTEM
2005 Pathfinder
4LO Switch
EDS001LA
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.
Monitored item
Content
Condition
Display value
4L POSI SW [ON/OFF]
Condition of 4LO switch
●
Vehicle stopped
●
Engine running
●
A/T selector lever “N”
position
●
Brake pedal depressed
4WD shift switch: 4LO
ON
Except the above
OFF
Terminal
Wire
color
Item
Condition
Data (Approx.)
24
Y
4LO switch
●
Vehicle stopped
●
Engine running
●
A/T selector
lever “N” position
●
Brake pedal
depressed
4WD shift switch: 4LO
0V
Except the above
Battery voltage
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