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TROUBLE DIAGNOSIS FOR SYSTEM
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TROUBLE DIAGNOSIS FOR SYSTEMPFP:00000
Power Supply Circuit for 4WD Control UnitEDS001VM
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIAGNOSTIC PROCEDURE
1. CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect 4WD control unit harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Check voltage between 4WD control unit harness connector ter-
minals and ground.
5. Turn ignition switch “OFF”.
6. Check voltage between 4WD control unit harness connector ter-
minals 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. 8 or 37, located in the fuse block (J/B)]
Harness for short or open between battery and 4WD control unit harness connector terminal 9
Harness for short or open between ignition switch and 4WD control unit harness connector ter-
minal 7
Ignition switch. Refer to PG-2, "POWER SUPPLY ROUTING" .
Monitored item [Unit] Condition Display value (Approx.)
BATTERY VOLT [V] Ignition switch: ON Battery voltage
Connector Terminal (Wire color) Voltage (Approx.)
M1077 (GY) - Ground
Battery voltage
9 (P/L) - Ground
SDIA2304E
Connector Terminal (Wire color) Voltage (Approx.)
M1077 (GY) - Ground 0V
9 (P/L) - Ground Battery voltage
SDIA2321E
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TF-34
TROUBLE DIAGNOSIS FOR SYSTEM
2. CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect 4WD control unit harness connector.
3. Check continuity between 4WD control unit harness connector
M107 terminals 10 (B/R), 11 (B/R) and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK DTC
Start engine.
Does 4WD warning lamp turn OFF?
YES >>INSPECTION END
NO >> Perform the self-diagnosis, repair or replace damaged parts. Refer to TF-30, "
SELF-DIAG
RESULT MODE" .
4WD Control UnitEDS001VN
DIAGNOSTIC PROCEDURE
Check the following if “CONTROLLER FAILURE [C1201]” is displayed in self-diagnostic results of CON-
SULT-II.
1. PERFORM SELF-DIAGNOSIS
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
“CONTROLLER FAILURE [C1201]” displayed?
YES >> Replace 4WD control unit. Refer to TF-52, "4WD CONTROL UNIT" .
NO >>INSPECTION END
ABS SystemEDS001VO
DIAGNOSTIC PROCEDURE
Check the following if “ABS SYSTEM [C1203]” is displayed in self-diagnostic results of CONSULT-II.
1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) OR ESP/TCS/ABS/
CONTROL UNIT
Perform self-diagnosis with ABS actuator and electric unit (control unit) (without ESP) or ESP/TCS/ABS con-
trol unit (with ESP). Refer to BRC-27, "
SELF-DIAGNOSIS" (without ESP) or BRC-79, "SELF-DIAGNOSIS"
(with ESP).
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.Continuity should exist.
SDIA2305E
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TROUBLE DIAGNOSIS FOR SYSTEM
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2. CHECK DTC AFTER DRIVING
1. Turn ignition switch “OFF”.
2. Start engine and drive vehicle at 30 km/h (19 MPH) for at least 1 minute.
3. Make sure that ABS warning lamp turns OFF.
4. Perform erase self-diagnostic results. Refer to TF-31, "
How to Erase Self-diagnostic Results" .
5. Stop vehicle and turn ignition switch “OFF”.
6. Turn ignition switch “ON”.
7. Perform self-diagnosis.
Is the
“ABS SYSTEM [C1203]” displayed?
YES >> GO TO 3.
NO >>INSPECTION END
3. CHECK 4WD CONTROL UNIT
Check 4WD control unit input/output signal. Refer to TF-28, "
4WD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 4.
NG >> Check 4WD 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 >> Perform self-diagnosis with ABS actuator and electric unit (control unit) (without ESP) or ESP/
TCS/ABS control unit (with ESP) again. Refer to BRC-27, "
SELF-DIAGNOSIS" (without ESP) or
BRC-79, "
SELF-DIAGNOSIS" (with ESP).
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TF-36
TROUBLE DIAGNOSIS FOR SYSTEM
4WD SolenoidEDS001VP
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
*: The values are changed by throttle opening and engine speed.
DIAGNOSTIC PROCEDURE
Check the following if “4WD SOLENOID [C1204]” is displayed in self-diagnostic results of CONSULT-II.
1. CHECK 4WD SOLENOID 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 “ETS SOLENOID”.
*: The values are changed by throttle opening and engine speed.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.
2. CHECK 4WD SOLENOID
1. Turn ignition switch “OFF”.
2. Disconnect 4WD solenoid harness connector.
3. Check resistance between 4WD solenoid harness connector
B152 terminals 1 and 2.
OK or NG
OK >> GO TO 3.
NG >> 4WD solenoid is malfunctioning. Replace electric con-
trolled coupling. Refer to RFD-22, "
Disassembly and
Assembly" .
Monitored item [Unit] Condition Display value
ETS SOLENOID [A]Engine speed: At idle2WD mode
Approx. 0.000A AUTO mode
LOCK mode
Engine speed: 3,000 rpm or more constant2WD mode Approx. 0.000A
AUTO mode Approx. 0.000 - 1.500A*
LOCK mode Approx. 2.800A
Condition Display value
Engine speed: At idle2WD mode
Approx. 0.000A AUTO mode
LOCK mode
Engine speed: 3,000 rpm or
more constant2WD mode Approx. 0.000A
AUTO mode Approx. 0.000 - 1.500A*
LOCK mode Approx. 2.800A
SDIA1885E
1 - 2 : Approx. 2.45Ω
PDIA0489E
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TROUBLE DIAGNOSIS FOR SYSTEM
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3. CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect 4WD control unit harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Check voltage between 4WD control unit harness connector ter-
minal 9 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following. If any item is damaged, repair or
replace damaged parts.
10A fuse (No. 37, located in the fuse and fusible link
box)
Harness for short or open between battery and 4WD control unit harness connector terminal 9
4. CHECK 4WD SOLENOID CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect 4WD control unit harness connector.
3. Check resistance between 4WD control unit harness connector
terminals 1 and 2.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECK HARNESS BETWEEN 4WD CONTROL UNIT AND 4WD SOLENOID
1. Turn ignition switch “OFF”.
2. Disconnect 4WD control unit harness connector and 4WD solenoid harness connector.
3. Check continuity between the following terminals.
–4WD control unit harness connector M107 terminal 1 (OR) and
4WD solenoid harness connector B152 terminal 2 (LG).
–4WD control unit harness connector M107 terminal 2 (L/W) and
4WD solenoid harness connector B152 terminal 1 (L/W).
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
Connector Terminal (Wire color) Voltage (Approx.)
M107 9 (P/L) - Ground Battery voltage
SDIA2306E
Connector Terminal (Wire color) Resistance (Approx.)
M107 1 (OR) - 2 (L/W) (Ground) 2.45 Ω
SDIA2307E
1 (OR) - 2 (LG) : Continuity should exist.
2 (L/W) - 1 (L/W) : Continuity should exist.
SDIA2301E
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TF-38
TROUBLE DIAGNOSIS FOR SYSTEM
6. CHECK 4WD CONTROL UNIT
Check 4WD control unit input/output signal. Refer to TF-28, "
4WD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 7.
NG >> Check 4WD control unit pin terminals for damage or loose connection with harness connector. If
any item is damaged, repair or replace damaged parts.
7. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace 4WD control unit.
COMPONENT INSPECTION
1. Turn ignition switch “OFF”.
2. Disconnect 4WD solenoid harness connector.
3. Check resistance between 4WD solenoid harness connector
B152 terminals 1 and 2.
4. If NG, replace the electric controlled coupling. Refer to RFD-22,
"Disassembly and Assembly" .
4WD Actuator RelayEDS001VQ
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIAGNOSTIC PROCEDURE
Check the following if “4WD ACTUATOR RLY [C1205]” is displayed in self-diagnostic results of CON-
SULT-II.
1. CHECK 4WD SOLENOID SYSTEM
Perform self-diagnosis. Refer to TF-30, "
SELF-DIAG RESULT MODE" .
Is the
“4WD SOLENOID [C1204]” displayed?
YES >> Perform trouble diagnosis for 4WD solenoid. Refer to TF-36, "4WD Solenoid" .
NO >> GO TO 2.1 - 2 : Approx. 2.45Ω
PDIA0489E
Monitored item Condition Display value
ETS ACTUATOR [ON/OFF]Engine stopped (Ignition switch: ON) OFF
Engine running ON
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TROUBLE DIAGNOSIS FOR SYSTEM
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2. CHECK 4WD ACTUATOR RELAY SIGNAL
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Start engine and read out ON/OFF signaling action of “ETS
ACTUATOR”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK 4WD CONTROL UNIT
Check 4WD control unit input/output signal. Refer to TF-28, "
4WD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 4.
NG >> Check 4WD 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 4WD control unit.
Monitor item Condition Display value
ETS ACTUATOREngine stopped (Ignition switch: ON) OFF
Engine running ON
SDIA1897E
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![NISSAN X-TRAIL 2003 Service Repair Manual TF-40
TROUBLE DIAGNOSIS FOR SYSTEM
4WD Mode Switch EDS001VS
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIAGNOSTIC PROCEDURE
Check the following if “MODE SW [C1209] NISSAN X-TRAIL 2003 Service Repair Manual TF-40
TROUBLE DIAGNOSIS FOR SYSTEM
4WD Mode Switch EDS001VS
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIAGNOSTIC PROCEDURE
Check the following if “MODE SW [C1209]](/manual-img/5/57404/w960_57404-2615.png)
TF-40
TROUBLE DIAGNOSIS FOR SYSTEM
4WD Mode Switch EDS001VS
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIAGNOSTIC PROCEDURE
Check the following if “MODE SW [C1209]” is detected in self-diagnosis results of CONSULT-II.
1. CHECK 4WD MODE SWITCH SIGNAL
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Read out monitor “4WD MODE SW” with operating 4WD mode
switch.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK 4WD MODE SWITCH
1. Turn ignition switch “OFF”.
2. Disconnect 4WD mode switch harness connector.
3. Operate 4WD mode switch and check continuity between 4WD
mode switch harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Replace 4WD mode switch.
Monitor item Condition Display value
4WD MODE SW [2WD/AUTO/LOCK] 4WD mode switch2WD 2WD
AUTO AUTO
LOCK LOCK
Monitor item Condition Display value
4WD MODE SW 4WD mode switch2WD 2WD
AUTO AUTO
LOCK LOCK
SDIA1898E
Connector Terminal Condition Continuity
M392 - 44WD mode switch: AUTO Yes
Except the above No
3 - 44WD mode switch: LOCK Yes
Except the above No
4 - 74WD mode switch: 2WD Yes
Except the above No
SDIA2302E