2005 NISSAN NAVARA check engine

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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TF
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

TROUBLE DIAGNOSIS FOR SYSTEM
TF-71
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3.CHECK TRANSFER SHIFT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer toTF-21, "
Location of Electrical Parts".
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.
lHarness for short or open between transfer control unit harness connector terminal 27 and
transfer shift high relay harness connector E27 terminal 2.
lHarness for short or open between transfer control unit harness connector terminal 27 and
transfer shift low relay harness connector terminal E29 terminal 2.
4.CHECK TRANSFER SHIFT RELAY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay.
3. Apply 12V direct current between transfer shift high relay and
transfer shift low relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 5.
NG >> Replace transfer shift high relay or transfer shift low relay.
Connector Terminal Voltage (Approx.)
E27 2 - Ground
0V
E29 2 - Ground
SDIA3384E
Connector Terminal Voltage (Approx.)
E27 2 - Ground
Battery voltage
E29 2 - Ground
SDIA3385E
Terminal Condition Continuity
3-412V direct current supply between terminals 1 and 2 No
OFF Yes
3-512V direct current supply between terminals 1 and 2 Yes
OFF No
LDIA0099E

TF-76
TROUBLE DIAGNOSIS FOR SYSTEM
DIAGNOSTIC PROCEDURE
1.CHECK ACTUATOR POSITION SWITCH SIGNAL
With 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, move M/T shift lever to neutral
position.
4. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
5. Read out the value of “SHIFT POS SW1”, “SHIFT POS SW2”,
“SHIFT POS SW3”, “SHIFT POS SW4”.
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, move M/T shift lever to neutral
position.
4. Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
Monitored item Condition Display value
SHIFT POS SW14WD shift switch: 2WD and 4LO ON
4WD shift switch: 4H OFF
SHIFT POS SW24WD shift switch: 4LO ON
4WD shift switch: 2WD and 4H OFF
SHIFT POS SW34WD shift switch: 2WD and 4H ON
4WD shift switch: 4LO OFF
SHIFT POS SW44WD shift switch: 4H and 4LO ON
4WD shift switch: 2WD OFF
Connector Terminal ConditionVoltage
(Approx.)
E10510 -
Ground4WD shift switch: 2WD and 4LO 0V
4WD shift switch: 4HBattery
voltage
11 -
Ground4WD shift switch: 4LO 0V
4WD shift switch: 2WD and 4HBattery
voltage
12 -
Ground4WD shift switch: 2WD and 4H 0V
4WD shift switch: 4LOBattery
voltage
13 -
Ground4WD shift switch: 4H and 4LO 0V
4WD shift switch: 2WDBattery
voltage
PDIA0224E
SDIA3369E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-79
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TF
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.
l10A fuse (No. 63, located in the fuse and relay box).
l40A fusible link (No.J, located in the fuse and fusible link box).
lHarness for short or open between battery and transfer shut off relay 1 harness connector E84
terminal 3.
lHarness for short or open between transfer control unit harness connector M106 terminal 27
and transfer shut off relay 1 harness connector E84 terminal 5.
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 1 harness connector E84 terminal 2
and ground.
lHarness for short or open between ignition switch and transfer control unit harness connector
M105 terminal 25.
lBattery and ignition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
lTransfer shut off relay 1. Refer toTF-54, "COMPONENT INSPECTION".
Connector Terminal Voltage (Approx.)
M105 25 - Ground
0V
M106 27 - Ground
SDIA3371E
Connector Terminal Voltage (Approx.)
M105 25 - Ground
Battery voltage
M106 27 - Ground
SDIA3372E

TF-80
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK GROUND CIRCUIT
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Check continuity between transfer control unit harness connec-
tor M106 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.
lHarness for short or open between battery and trans-
fer shut off relay 2 harness connector E85 terminal 1.
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.
lTransfer shut off relay 2. Refer toTF-54, "COMPONENT INSPECTION".
4.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-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.)
M106 40 - Ground Battery voltage
SDIA2819E
Connector Terminal Voltage (Approx.)
M106 40 - Ground 0V
SDIA2820E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-81
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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 toTF-100, "Removal and Installation".
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 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 transfer control device?
YES >> Replace transfer control unit. Refer toTF-100, "Removal and Installation".
NO >>INSPECTION END
Engine Speed Signal (ECM)EDS00329
DIAGNOSTIC PROCEDURE
1.CHECK DTC WITH ECM
Perform self-diagnosis with ECM. Refer toEC-27, "
ON BOARD DIAGNOSTIC (OBD) SYSTEM".
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 ECM again. Refer toEC-27, "
ON BOARD DIAGNOSTIC (OBD) SYS-
TEM".