Infiniti QX4 (R50). Manual — part 582
4
CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine (idling).
2. Select “SELF-DIAG RESULTS” in Select Diag Mode.
3. Read out self-diagnostic result.
SMT826D
SMT978D
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
SHIFT ACTUATOR
Diagnostic Procedure (Cont’d)
TF-90
5
CHECK INPUT SIGNAL
Without CONSULT-II
1. Start engine (idling).
2. Check voltage between transfer control unit harness connector terminal 33 (or 42) and body ground while 4WD shift
switch is set from 4H to 4LO (or from 4LO to 4H).
SMT828D
3. Result
MTBL0202
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
6
CHECK HARNESS CONTINUITY BETWEEN TRANSFER CONTROL UNIT AND TRANSFER CONTROL
DEVICE
OK or NG
OK
©
GO TO 7.
NG
©
Repair and replace harness connector between transfer control unit and transfer control
device.
7
PERFORM SELF-DIAGNOSIS AGAIN
After driving for a while, perform self-diagnosis again.
Refer to “Trouble Diagnosis without CONSULT-II”, TF-27.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform transfer control unit/output signal inspection. Refer to “TRANSFER CON-
TROL UNIT INSPECTION TABLE”, “TROUBLE DIAGNOSIS — GENERAL
DESCRIPTION”, TF-55.
2. If NG, recheck transfer control unit pin terminals for damage or loose connection with
harness connector.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SHIFT ACTUATOR
Diagnostic Procedure (Cont’d)
TF-91
Diagnostic Procedure
NBTF0065
1
SHIFT ACTUATOR POSITION SWITCH
Refer to “Actuator & Actuator Position Switch”, “COMPONENT INSPECTION”, TF-115.
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
CHECK POSITION SWITCH
1. Recheck continuity of shift actuator position switch.
Refer to “Actuator & Actuator Position Switch”, “COMPONENT INSPECTION”, TF-115.
Continuity should exist.
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace position switch.
3
CHECK INPUT SIGNAL
WITH CONSULT-II
©
GO TO 4.
WITHOUT CONSULT-II
©
GO TO 5.
4
CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine (idling).
2. Select “SELF-DIAG RESULTS” in Select Diag Mode.
3. Read out self-diagnostic result.
SMT829DA
SMT978D
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
SHIFT ACTUATOR POSITION SWITCH
Diagnostic Procedure
TF-92
5
CHECK INPUT SIGNAL
Without CONSULT-II
1. Start engine (idling).
2. Check voltage transfer control unit harness connector terminal 27 (or 44) and body ground while 4WD shift switch is
set from 4H to 4LO (or from 4LO to 4H).
SMT830D
3. Result
MTBL0203
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
6
CHECK HARNESS CONTINUITY BETWEEN TRANSFER CONTROL UNIT AND TRANSFER CONTROL
DEVICE
OK or NG
OK
©
GO TO 7.
NG
©
Repair and replace harness connector between transfer control unit and transfer control
device.
7
PERFORM SELF-DIAGNOSIS AGAIN
After driving for a while, perform self-diagnosis again.
Refer to “Trouble Diagnosis without CONSULT-II”, TF-27.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform transfer control unit/output signal inspection. Refer to “TRANSFER CON-
TROL UNIT INSPECTION TABLE”, “TROUBLE DIAGNOSIS — GENERAL
DESCRIPTION”, TF-55.
2. If NG, recheck transfer control unit pin terminals for damage or loose connection with
harness connector.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SHIFT ACTUATOR POSITION SWITCH
Diagnostic Procedure (Cont’d)
TF-93
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