check engine NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS FOR SYMPTOMS
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DIAGNOSTIC PROCEDURE
1.CHECK TRANSFER CONTROL UNIT POWER SUPPLY CIRCUIT
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

TF-90
TROUBLE DIAGNOSIS FOR SYMPTOMS
2.CHECK TRANSFER CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connectors.
3. Check continuity between transfer control unit harness connec-
tor M105 terminals 6, 18, M106 terminal 32 and ground.
Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >>
lRepair open circuit or short to power in harness or
connectors.
lHarness for short or open between transfer shut off
relay harness connector E85 terminal 2 and transfer
control unit harness connector M106 terminal 40.
3.CHECK COMBINATION METER POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect combination meter harness connector.
3. Check voltage between combination meter harness connector
terminals and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between combination meter harness connector
terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse [No. 14, located in the fuse block (J/B)] or
ignition switch.
lHarness for short or open between ignition switch and combination meter harness connector
M23 terminal 16. Continuity should exist.
SDIA3362E
Connector Terminal Voltage (Approx.)
M23 16 - Ground 0V
WDIA0178E
Connector Terminal Voltage (Approx.)
M23 16 - Ground Battery voltage
WDIA0179E

TROUBLE DIAGNOSIS FOR SYMPTOMS
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4.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Check continuity between the following terminals.
–Transfer control unit harness connector M106 terminal 35 and
combination meter harness connector M23 terminal 30.
–Transfer control unit harness connector M106 terminal 36 and
combination meter harness connector M23 terminal 27.
–Transfer control unit harness connector M106 terminal 37 and
combination meter harness connector M23 terminal 29.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK INDICATOR LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect combination meter harness connector.
3. Disconnect transfer control unit harness connector.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Ground the following terminals using suitable wiring.
–Transfer control unit harness connector M106 terminal 35 and
ground.
–Transfer control unit harness connector M106 terminal 36 and
ground.
–Transfer control unit harness connector M106 terminal 37 and
ground.
Do indicator lamps turn on?
OK >> GO TO 6.
NG >> Replace combination meter. Refer toDI-27, "
Removal
and Installation of Combination Meter".
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.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 >>INSPECTION END
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.
4WD Warning Lamp Does Not Turn ONEDS0032E
SYMPTOM:
4WD warning lamp does not turn ON when turning ignition switch to “ON”.Continuity should exist.
SDIA2823E
SDIA3451E

TF-92
TROUBLE DIAGNOSIS FOR SYMPTOMS
DIAGNOSTIC PROCEDURE
1.CHECK TRANSFER CONTROL UNIT POWER SUPPLY CIRCUIT
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 SYMPTOMS
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2.CHECK TRANSFER CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connectors.
3. Check continuity between transfer control unit harness connec-
tor M105 terminals 6, 18, M106 terminal 32 and ground.
Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >>
lRepair open circuit or short to power in harness or
connectors.
lHarness for short or open between transfer shut off
relay harness connector E85 terminal 2 and transfer
control unit harness connector M106 terminal 40.
3.CHECK COMBINATION METER POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect combination meter harness connector.
3. Check voltage between combination meter harness connector
terminals and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between combination meter harness connector
terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse [No. 14, located in the fuse block (J/B)] or
ignition switch.
lHarness for short or open between ignition switch and combination meter harness connector
M23 terminal 16. Continuity should exist.
SDIA3362E
Connector Terminal Voltage (Approx.)
M23 16 - Ground 0V
WDIA0178E
Connector Terminal Voltage (Approx.)
M23 16 - Ground Battery voltage
WDIA0179E

TF-94
TROUBLE DIAGNOSIS FOR SYMPTOMS
4.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Check continuity between transfer control unit harness connec-
tor M106 terminal 38 and combination meter harness connector
M23 terminal 26.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK INDICATOR LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect combination meter harness connector.
3. Disconnect transfer control unit harness connector.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Ground the following terminals using suitable wiring.
–Transfer control unit harness connector M106 terminal 38 and
ground.
Do indicator lamps turn on?
OK >> GO TO 6.
NG >> Replace combination meter. Refer toDI-27, "
Removal
and Installation of Combination Meter".
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.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 >>INSPECTION END
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.
4WD Shift Indicator Lamp or 4LO Indicator Lamp Does Not ChangeEDS0032F
SYMPTOM:
4WD shift indicator lamp or 4LO indicator lamp does not change when switching 4WD shift switch.Continuity should exist.
SDIA3403E
SDIA3452E

TROUBLE DIAGNOSIS FOR SYMPTOMS
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5.CHECK ATP WARNING LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Ground the following terminal using suitable wiring.
–ATP switch harness connector F55 terminal 8 and ground.
Does ATP warning lamp turn on?
OK >> GO TO 8.
NG >> GO TO 6.
6.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and combination meter harness connector.
3. Check continuity between transfer control unit harness connec-
tor M106 terminal 39 and combination meter harness connector
M23 terminal 21.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7.CHECK HARNESS BETWEEN COMBINATION METER AND ATP SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Check continuity between combination meter harness connector
M23 terminal 1 and ATP switch harness connector F41 terminal
8.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 9.
SDIA2832E
Continuity should exist.
SDIA2825E
Continuity should exist.
SDIA2833E

TF-112
TRANSFER ASSEMBLY
INSTALLATION
Note the following, and install in the reverse order of removal.
lTighten the bolts to specification.
lAfter the installation, check the transfer fluid level and fluid leak-
age. Refer toTF-12, "
FLUID LEAKAGE AND FLUID LEVEL".
lAfter filling, start the engine for one minute. Then stop the
engine and recheck the transfer fluid.
lAfter the installation, check the 4WD shift indicator pattern. If
NG, adjust the position between the transfer assembly and
transfer control unit. Refer toTF-4, "
Precautions for Transfer
Assembly and Transfer Control Unit Replacement".
Disassembly and AssemblyEDS0032P
COMPONENTS
Bolt length : 45 mm (1.77 in)
Tightening torque : 36 N·m (3.7kg-m, 27 ft-lb)
SDIA3181E
1. Baffle plate 2. Breather tube 3. Front case
4. Snap ring 5. Input oil seal 6. Self-lock nut
7. Companion flange 8. Front oil seal 9. 4LO switch (gray with green paint)
10. ATP switch (black) 11. Rear case 12. Wait detection switch (gray)
13. Gasket 14. Filler plug 15. Check ball
16. Check spring 17. Check plug 18. Drain plug
19. O-ring 20. Transfer control device 21. Harness bracket
SDIA3419E