engine NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS FOR SYSTEM
TF-53
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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.
l40A fusible link (No.J, located in the fuse and fusible link box). Refer toPG-4, "POWER SUP-
PLY ROUTING CIRCUIT".
l10A fuses [No. 18, located in the fuse block (J/B) and No. 63 and 64 located in the fuse and
relay box]. Refer toPG-4, "
POWER SUPPLY ROUTING CIRCUIT".
lHarness for short or open between battery and transfer control unit harness connector M105
terminal 19.
lHarness for short or open between battery and transfer shut off relay 2 harness connector E85
terminals 1 and 3.
lHarness for short or open between battery and transfer shut off relay 1 harness connector E84
terminal 3.
lHarness for short or open between ignition switch and transfer control unit harness connector
M105 terminal 25.
lHarness for short or open between ignition switch and transfer shut off relay 1 harness connec-
tor E84 terminal 1.
lHarness for short or open between transfer shut off relay 2 harness connector E85 terminal 5
and transfer control unit harness connector M106 terminals 44, 45.
lHarness for short or open between transfer shut off relay 1 harness connector E84 terminal 5
and transfer control unit harness connector M106 terminals 44, 45.
lHarness for short or open between transfer shut off relay 2 harness connector E85 terminal 2
and transfer control unit harness connector M106 terminal 40.
lHarness for open between transfer shut off relay 1 harness connector E84 terminal 2 and
ground.
lBattery and ignition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
lTransfer shut off relay 1, 2. Refer toTF-54, "COMPONENT INSPECTION".
Connector Terminal Voltage (Approx.)
M10519 - Ground Battery voltage
25 - Ground 0V
M10640 - Ground Battery voltage
44 - Ground
0V
45 - Ground
SDIA3360E
Connector Terminal Voltage (Approx.)
M10519 - Ground
Battery voltage
25 - Ground
M10640 - Ground 0V
44 - Ground
Battery voltage
45 - Ground
SDIA3361E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-55
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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 toTF-100, "Removal and Installation".
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 toTF-49, "
SELF-DIAGNOSTIC
PROCEDURE (WITHOUT CONSULT-II)"andTF-51, "ERASE SELF-DIAGNOSIS".
2. Perform the self-diagnosis again.
Do the self-diagnostic results indicate AD converter?
YES >> Replace transfer control unit. Refer toTF-100, "Removal and Installation".
NO >>INSPECTION END
Output Shaft Revolution Signal (TCM)EDS00320
DIAGNOSTIC PROCEDURE
1.CHECK DTC WITH TCM
Perform self-diagnosis with TCM. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT 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 toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
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 toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
Vehicle Speed Sensor (ABS)EDS00321
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 toBRC-18, "
Self-Diagnosis".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.

TF-56
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
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) again. Refer toBRC-18,
"Self-Diagnosis".
4LO SwitchEDS00322
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
lVehicle stopped
lEngine running
lFor A/T models, A/T
selector lever “N” posi-
tion with brake pedal
depressed.
lFor M/T models, M/T
shift lever neutral posi-
tion with clutch and
brake pedal depressed.4WD shift switch: 4LO ON
Except the above OFF
Te r m i n a lWire
colorItem Condition Data (Approx.)
24 Y 4LO switch
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector
lever “N” position
with brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
with clutch and
brake pedal
depressed.4WD shift switch: 4LO 0V
Except the above Battery voltage

TROUBLE DIAGNOSIS FOR SYSTEM
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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.
Condition Display value
lVehicle stopped
lEngine running
lFor A/T models, A/T selector
lever “N” position with brake
pedal depressed.
lFor M/T models, M/T shift lever
neutral position with clutch and
brake pedal depressed.4WD shift switch: 4LO ON
Except the above OFF
PDIA0220E
Connector Terminal ConditionVo l ta g e
(Approx.)
M10524 -
Ground
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector lever
“N” position with
brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
with clutch and
brake pedal
depressed.4WD shift switch: 4LO 0V
Except the aboveBattery
voltage
SDIA3363E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-59
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6.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace transfer control unit. Refer toTF-100, "
Removal and Installation".
COMPONENT INSPECTION
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect 4LO switch harness connector.
3. Remove 4LO switch. Refer toTF-21, "
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. Refer toTF-21, "
Location of Elec-
trical Parts".
4WD Shift SwitchEDS00323
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 - 13Push 4LO switch Yes
Release 4LO switch No
PDIA0204E
Monitored item [Unit] Content Condition Display value
2WDSWITCH[ON/
OFF]Input condition from 4WD
shift switch4WD shift switch: 2WD ON
4WD shift switch: 4H and 4LO OFF
4H SWITCH [ON/OFF]Input condition from 4WD
shift switch4WD shift switch: 4H ON
4WD shift switch: 2WD and 4LO OFF
4L SWITCH [ON/OFF]Input condition from 4WD
shift switch4WD 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
TerminalWire
colorItem Condition Data (Approx.)
14 G 4WD shift switch (2WD)
Ignition switch: ON4WD 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

TROUBLE DIAGNOSIS FOR SYSTEM
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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 M51 terminal 1 and transfer
shut off relay 2 harness connector E85 terminal 5 and
10A fuse (No. 64 located in the fuse and relay box). If any items are damaged, repair or replace
damaged parts.
2. Perform trouble diagnosis for power supply circuit. Refer toTF-52, "
Power Supply Circuit For
Transfer Control Unit".
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 M105 terminal 14 and
4WD shift switch harness connector M51 terminal 3.
–Transfer control unit harness connector M105 terminal 15 and
4WD shift switch harness connector M51 terminal 5.
–Transfer control unit harness connector M105 terminal 16 and
4WD shift switch harness connector M51 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 Voltage (Approx.)
M51 1 - Ground 0V
SDIA2803E
Connector Terminal Voltage (Approx.)
M51 1 - Ground Battery voltage
SDIA2802E
Continuity should exist.
SDIA3366E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-63
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Wait Detection SwitchEDS00324
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
WAIT DETCT SW [ON/
OFF]Condition of wait detection
switch
lVehicle stopped
lEngine running
lFor A/T models, A/T
selector lever “N” posi-
tion with brake pedal
depressed.
lFor M/T models, M/T
shift lever neutral posi-
tion with clutch and
brake pedal depressed.4WD shift switch:
4H and 4LOON
4WD shift switch: 2WD OFF
TerminalWire
colorItem Condition Data (Approx.)
17 O Wait detection switch
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector
lever “N” position
with brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
with clutch and
brake pedal
depressed.4WD shift switch: 4H and 4LO 0V
4WD shift switch: 2WD Battery voltage

TF-64
TROUBLE DIAGNOSIS FOR SYSTEM
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.
Condition Display value
lVehicle stopped
lEngine running
lFor A/T models, A/T selector
lever “N” position with brake
pedal depressed.
lFor M/T models, M/T shift
lever neutral position with
clutch and brake pedal
depressed.4WD shift switch: 4H and 4LO ON
4WD shift switch: 2WD OFF
PDIA0221E
Connector Terminal ConditionVoltage
(Approx.)
M10517 -
Ground
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector lever
“N” position with
brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
withclutchand
brake pedal
depressed.4WD shift switch:
4H and 4LO0V
4WD shift switch: 2WDBattery
voltage
SDIA3367E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-67
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Actuator MotorEDS00326
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
SHIFT ACT 1 [ON/OFF]Output condition to actua-
tor motor (clockwise)
lVehicle stopped
lEngine running
lFor A/T models, A/T
selector lever “N” posi-
tion with brake pedal
depressed.
lFor M/T models, M/T
shift lever neutral posi-
tion with clutch and
brake pedal depressed.4WD shift switch:
2WDto4Hor4Hto4LO
or 2WD to 4LOON
Except the above OFF
SHIFT AC MON1 [ON/
OFF]Check signal for transfer
control unit signal output4WD shift switch:
2WDto4Hor4Hto4LO
or 2WD to 4LOON
Except the above OFF
SHIFT ACT 2 [ON/OFF]Output condition to actua-
tor motor (counterclock-
wise)4WD shift switch:
4LO to 4H or 4H to 2WD
or 4LO to 2WDON
Except the above OFF
SHIFT AC MON2 [ON/
OFF]Check signal for transfer
control unit signal output4WD shift switch:
4LO to 4H or 4H to 2WD
or 4LO to 2WDON
Except the above OFF
TerminalWire
colorItem Condition Data (Approx.)
27 L Actuator motor power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)0V
28 BR Actuator motor (+)
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector
lever “N” position
with brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
with clutch and
brake pedal
depressed.When 4WD shift switch is operated
(while actuator motor is operating)Battery voltage
®0V
When 4WD shift switch is not operated 0V
31 G Actuator motor (-) Always 0V
42 LG Transfer shift high relay4WD shift switch:
2WD to 4H or 4H to 4LO or 2WD to 4LO0V
Except the above Battery voltage
47 OTransfer shift high relay moni-
tor4WD shift switch:
2WD to 4H or 4H to 4LO or 2WD to 4LO
(while actuator motor is operating)Battery voltage
®0V
Except the above 0V
48 RTransfer shift low relay moni-
tor4WD shift switch:
4LO to 4H or 4H to 2WD or 4LO to 2WD
(while actuator motor is operating)Battery voltage
®0V
Except the above 0V
50 Y Transfer shift low relay4WD shift switch:
4LO to 4H or 4H to 2WD or 4LO to 2WD0V
Except the above Battery voltage

TF-68
TROUBLE DIAGNOSIS FOR SYSTEM
DIAGNOSTIC PROCEDURE
1.CHECK ACTUATOR MOTOR 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 “SHIFT ACT1”, “SHIFT AC MON1”,
“SHIFT ACT2”, “SHIFT AC MON2”.
Without CONSULT-II
1. Start engine.
2. Depress brake pedal and stop vehicle.
3. For A/T models, move A/T selector lever to “N” position. For M/T models, shift lever to neutral position.
4. Check voltage between transfer control unit harness connector
terminal and ground.
Monitored item Condition Display value
SHIFT ACT1
lVehicle
stopped
lEngine run-
ning
lFor A/T mod-
els, A/T
selector lever
“N” position
with brake
pedal
depressed.
lFor M/T
models, M/T
shift lever
neutral posi-
tion with
clutch and
brake pedal
depressed.4WD shift switch:
2WD to 4H or 4H to 4LO or
2WD to 4LOON
Except the above OFF
SHIFT AC MON14WD shift switch:
2WD to 4H or 4H to 4LO or
2WD to 4LOON
Except the above OFF
SHIFT ACT24WD shift switch:
4LOto4Hor4Hto2WDor
4LO to 2WDON
Except the above OFF
SHIFT AC MON24WD shift switch:
4LOto4Hor4Hto2WDor
4LO to 2WDON
Except the above OFF
PDIA0223E
WDIA0144E