Page 2657 of 3833

TROUBLE DIAGNOSIS
TF-47
C
E
F
G
H
I
J
K
L
MA
B
TF
8. Touch "MONITOR START".
9. Screen of data monitor is displayed.
Display item list
Item (Unit)Monitor item selection
Remarks
ECU INPUT SIG-
NALSMAIN
SIGNALSCAN DIAG SUP-
PORT MNTRSELECTION
FROM MENU
ENG SPEED SIG (STOP/
RUN)××-×Condition of engine
(STOP/RUN) is dis-
played.
BATTERY VOLT (V)×--×Indicates voltage sup-
plied by 4WD control
unit
G-SEN VOLT (V)×--×G-sensor power sup-
ply condition (ON/OFF)
THRTL POS SEN (V)××-×Indicates throttle posi-
tion sensor signal volt-
age
ETS ACTUATOR (ON-OFF) -×-×4WD actuator relay
ON/OFF condition
4WD WARNING LAMP
(ON-OFF)-×-×Indicates 4WD warn-
ing lamp operating con-
dition
ETS SOLENOID (A) -×-×Current supplied to
4WD solenoid valve
DECEL G-SEN (G)××-×G-sensor operating
condition
4WD MODE SW
(AUTO, LOCK, 2WD)-×-×4WD mode recognized
by control unit
4WD MODE MONI
(AUTO, LOCK, 2WD)-×-×Output condition of
4WD mode indicator
lamp signal
DIS-TIRE MONITOR (mm) -×-×Improper size tire
installed condition
P BRAKE SW (ON/OFF) -×-×Indicates parking brake
switch ON/OFF condi-
tion
SPEED MTR (O/P) (km/h) -×-×Indicates vehicle speed
recognized by meter
control unit
CAN EFFECT (OK-NG) -×-×CAN communication
signal (OK/NG) condi-
tion is displayed.
TCS FAIL SIG (ON-OFF) - - -×TCS fail signal condi-
tion is displayed (ON-
OFF)
EBD FAIL SIG (ON-OFF) - - -×EBD fail signal condi-
tion is displayed (ON-
OFF)
ABS FAIL SIG (ON-OFF) -×-×ABS operation (ON-
OFF) condition is dis-
played.
CAN COMM (OK-NG) - -×-CAN communication
signal (OK/NG) condi-
tion is displayed.
Page 2658 of 3833

TF-48
TROUBLE DIAGNOSIS
*:In case that the output signal from ESP/TCS/ABS control unit malfunction in wheel speed system.
ACTIVE TEST
CAUTION:
●Do not perform active test while driving.
●Active test cannot be performed with 4WD warning lamp on.
Operation procedure
1. Connect CONSULT-II to data link connector and start engine.
2. Touch "START" on the display.
3. Touch "ALL MODE 4WD".
4. Touch "ACTIVE TEST".
5. Test item selection screen is displayed.
6. Touch test item.
7. Touch "START" with "MAIN SIGNALS" line inverted.
8. Active test screen is displayed.
CAN CIRC 1 (OK-UNKWN) - -×-
CAN communication
signal (OK/UNKWN)
condition is displayed. CAN CIRC 2 (OK-UNKWN) - -×-
CAN CIRC 3 (OK-UNKWN) - -×-
EBD SIGNAL (ON-OFF) - - -×EBD operation (ON-
OFF) condition is dis-
played
ABS SIGNAL - - -×ABS operation (ON-
OFF) status is dis-
played
AMR SIGNAL - - -×TCS engine control
operation (ON/OFF)
status is displayed
BMR SIGNAL - - -×TCS brake control
operation (ON/OFF)
status is displayed
VDC SIGNAL (ON-OFF) - - -×ESP operation (ON-
OFF) condition is dis-
played
VDC FAIL (ON-OFF) - - -×ESP fail signal condi-
tion is displayed (ON-
OFF)
ETS FAIL REQ (ON-OFF) -×-×ETS fail request signal
condition is displayed*
(ON-OFF) Item (Unit)Monitor item selection
Remarks
ECU INPUT SIG-
NALSMAIN
SIGNALSCAN DIAG SUP-
PORT MNTRSELECTION
FROM MENU
SDIA0625E
Page 2659 of 3833

TROUBLE DIAGNOSIS
TF-49
C
E
F
G
H
I
J
K
L
MA
B
TF
4WD solenoid valve
Under the vehicle stopped with engine ON, touch UP, DOWN on
screen. Adjust 4WD solenoid command current.
Check the monitor current at that time. If monitor current is within
approx. ±10%, light switch is normal.
CAUTION:
Do not continuously energize solenoid for long period of time.
ECU PART NUMBER
Ignore the ECU part number displayed in the ECU PART NUMBER MODE.
Refer to parts catalog to order the ECU.
Component InspectionEDS000HC
4WD SOLENOID VALVE
●Disconnect connector B152 and measure resistance between
terminals 1(L/W) and 2(LG).
System InspectionEDS000IO
CONTROL UNIT POWER SUPPLY SYSTEM
Inspection procedure
Disconnect 4WD control unit connector. Check for continuity and voltage between each terminal of vehicle-
side connector and body ground.
SDIA0626E
Resistance : Approx. 2.45Ω
SDIA0136E
Terminal No. Signal name Measuring condition Measurement value
3, 4, 6, 16, 17, 18, 24, 109 Power supply Ignition switch ON Battery voltage
104, 106, 108, 111, 113, 115 Ground Ignition switch OFF Continuity should exist.
SDIA0129E
Page 2660 of 3833
TF-50
TROUBLE DIAGNOSIS
G-SENSOR SYSTEM
Inspection Procedure
1. INSPECTION START
Using CONSULT-II perform self-diagnosis.
OK or NG
OK >> Diagnosis completed.
NG >> GO TO 2.
2. CONNECTOR INSPECTION
1. Disconnect control unit connector and G-sensor connector. Check the control unit connector terminal for
deformation and poor connection. Reconnect the connector.
2. Using CONSULT-II perform self-diagnosis again.
OK or NG
OK >> Diagnosis completed.
NG >> GO TO 3.
SFIA0064E
Page 2661 of 3833

TROUBLE DIAGNOSIS
TF-51
C
E
F
G
H
I
J
K
L
MA
B
TF
3.G-SENSOR UNIT INSPECTION
1. Disconnect connectors and remove G-sensor from vehicle.
2. Check the voltage under the following condition with the ignition
switch ON: G-sensor harness-side connector M57 terminal
NO.1(W) and body ground.
3. Using a test harness, connect 8.0V from the G-sensor harness
connector M57 terminal NO.1(W) to the G-sensor connector ter-
minal 1.
4. Using a test harness, connect from the G-sensor harness con-
nector M57 terminal NO.3(B) to the G-sensor connector terminal
NO.3.
5. With ignition switch ON, when the G-sensor is in horizontal,
check the output voltage under following condition with tilted for-
ward and backward by 90°: terminal NO. 3(B) and terminal NO.
2(R).
6. After inspection, install the G-sensor. Erase diagnosis trouble code of the 4WD control unit.
OK or NG
OK >> GO TO 4.
NG >> Replace G-sensor.
4.G-SENSOR HARNESS INSPECTION
1. Disconnect G-sensor connector.
2. Disconnect control unit connector.
3. Check harness between control unit and G-sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace the harness.
5.G-SENSOR CIRCUIT CONNECTOR INSPECTION
Check the G-sensor and the control unit harness connector (including intermediate connector).
OK or NG
OK >> Perform the following.
1. Connect the connector and perform self-diagnosis again.
2. Be sure to drive the vehicle at 30km/h (19MPH) for 1minutes or longer and be sure that the
4WD warning lamp does not come on.
NG >> Repair or replace the connector.1(W) - Body ground : Approx. 8.0V
SDIA0631E
Terminals NO. 2(B) - NO. 3(R) output voltage (V)
Horizontal : 2.3 - 2.7
Tilted forward by 90°: 0.80 - 0.86
Tilted rearward by 90°: 3.87 - 4.47SDIA0632E
Page 2662 of 3833

TF-52
TROUBLE DIAGNOSIS
4WD SOLENOID, ACTUATOR RELAY SYSTEM
Checking procedure
1. INSPECTION START
Use CONSULT-II and perform self-diagnosis.
OK or NG
OK >> Drive at 30 km/h (19MPH) for at least 1 minute. Check that 4WD warning lamp does not turn ON.
NG >> GO TO 2.
2. CONNECTOR INSPECTION
1. Disconnect the 4WD control unit connector and the 4WD solenoid connector. Check that terminals are not
deformed. Check that the connectors were connected properly. Reconnect connectors.
2. Perform self-diagnosis again.
OK or NG
OK >> Diagnosis completed.
NG >> GO TO 3.
3. INSPECTION OF 4WD SOLENOID UNIT
1. Disconnect connector B152 and check resistance between terminals No.1(L/W) and 2(LG).
OK or NG
OK >> GO TO 4.
NG >> Replace 4WD solenoid.
4. INSPECTION OF 4WD SOLENOID CIRCUIT HARNESS
1. Disconnect the 4WD solenoid connector.
2. Disconnect the 4WD control unit.
3. Check circuit continuity between control unit harness connector E122 terminal No.102 (LG) and 4WD
solenoid harness connector B152 terminal No.2 (LG).
4. Disconnect the 4WD actuator relay connector.
5. Check circuit continuity between 4WD solenoid harness connector B152 terminal No.1 (L/W) and 4WD
actuator relay connector E10 terminal No.5 (L/W).
OK or NG
OK >> GO TO 5.
NG >> Repair or replace the harness.
5. CHECK 4WD ACTUATOR RELAY AND CONNECTOR
1. Check the 4WD actuator relay and control unit harness connector.
2. Check the 4WD actuator relay unit.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace 4WD actuator relay and connector.1 (L/W) - 2 (LG) : Approx. 2.45 Ω
102 (LG) - 2 (LG) : Continuity should exist.
1 (L/W) - 5 (L/W) : Continuity should exist.
Page 2663 of 3833

TROUBLE DIAGNOSIS
TF-53
C
E
F
G
H
I
J
K
L
MA
B
TF
6.CHECK 4WD ACTUATOR RELAY POWER CIRCUIT
1. Disconnect the 4WD control unit connector.
2. Turn the ignition switch ON and check voltage between the 4WD control unit harness connector E122 ter-
minal No.18 (BR/W) and body ground.
OK or NG
OK >> GO TO 7.
NG >>
●Check items below. Perform self-diagnosis again.
–Check fuse 10 A (#8).
–Check harness and connectors between the fuse 10 A (#8), the 4WD actuator relay and the
4WD control unit.
7.CHECK 4WD ACTUATOR RELAY GROUND CIRCUIT
1. Disconnect the 4WD actuator relay connector.
2. Check continuity between the 4WD actuator relay harness connector E10 terminal No.3 (B) and body
ground.
OK or NG
OK >> 1. Connect the connector and perform self-diagnosis again.
2. Follow self-diagnosis procedure and, at the end, be sure to drive the vehicle at 30 km/h (19
MPH) for at least 1 minute and check that the 4WD warning lamp does not turn ON.
NG >> Repair or replace harness.
CAN COMMUNICATION SYSTEM
Checking procedure
1.INSPECTION START
Check the self-diagnosis results with CONSULT-II.
Status of "CAN communications" is OK?
YES >> After printing out self-diagnosis results, go to 2.
NO >> Checking is completed.
2.SYMPTOM CHECK
Check "CAN diagnosis support monitor" on data monitor.
>> After printing out monitor items, GO TOLAN-12, "
CAN SYSTEM (FOR M/T MODELS)" "CAN sys-
tem". (Refer to CAN communication connection unit.) 18 (BR/W) - Body ground : Battery voltage
3 (B) - Body ground :Continuity should exist.
Normal operation Malfunctioning
CAN COMM: OK CAN COMM: OK
CAN CIRC1: OK CAN CIRC1: UNKWN
CAN CIRC2: OK CAN CIRC2: OK
CAN CIRC3: OK CAN CIRC3: OK
Page 2664 of 3833

TF-54
TROUBLE DIAGNOSIS
4WD MODE SWITCH SYSTEM
1. INPUT SIGNAL CHECK
Check using the data monitor function of the CONSULT-II. While monitoring the 4WD mode switch items,
press 2WD mode switch. Check the display changes from ## to 2WD. Check the display for AUTO and LOCK
just the same. (## indicates when mode SW is not pressed.)
OK or NG
OK >>●4WD control unit input/output signal inspection.
●Recheck 4WD control unit connector terminals and connection.
NG >> GO TO 3.
2. INSPECTION OF 4WD MODE SWITCH POWER SUPPLY
●Disconnect 4WD mode switch connector.
●Turn ignition switch ON.
●Measure voltage between 4WD mode change and over switch harness connector M39 terminal No.2 (L),
No.1 (BR).
OK or NG
OK >> GO TO 4.
NG >> Harness malfunction or connector malfunction between ignition switch and 4WD mode switch
connector or connector malfunction.
3. HARNESS CONTINUITY INSPECTION
●Turn ignition switch OFF.
●Confirm the continuity between the following terminals.
–4WD control unit harness connector E122 terminal No. 26 (L) and 4WD mode switch harness connector
M39 terminal No. 2 (L).
–4WD control unit harness connector E122 terminal No. 27 (BR) and 4WD mode switch harness connec-
tor M39 terminal No. 1 (BR).
OK or NG
OK >> GO TO 5.
NG >> Malfunctioning harness or connector.
4. HARNESS CONTINUITY INSPECTION
Drive the vehicle for a while and the perform self-diagnosis.
OK or NG
OK >> End.
NG >>
●4WD control unit input/output signal inspection.
●Recheck 4WD control unit connector terminals and connection. 2 (L), 1 (BR) - Body ground : 4V or more.
26 (L) - 2 (L) : Continuity should exist.
27 (BR) - 1 (BR) : Continuity should exist.