Infiniti QX4 (R50). Manual — part 346
PROCEDURE
Diagnostic procedure
REFERENCE PAGE (EL-
)
SYMPTOM
DIAGNOSTIC
PROCEDURE
8
[Lifting
motor
(front)
check]
DIAGNOSTIC
PROCEDURE
9
[Lifting
motor
(rear)
check]
DIAGNOSTIC
PROCEDURE
10
(Power
seat
switch
check)
DIAGNOSTIC
PROCEDURE
1
1
(Cancel
switch
check)
DIAGNOSTIC
PROCEDURE
12
(Key
,
park
position,
door
switch
and
vehicle
speed
sensor
check)
DIAGNOSTIC
PROCEDURE
13
(Seat
memory
switch
check)
DIAGNOSTIC
PROCEDURE
14
(Memory
indicator
check)
1
No seat system functions operate.
2
Some of the seat
system functions
do not operate
during automatic/
manual operation.
Sliding
Reclining
Lifting (Front)
X
Lifting (Rear)
X
3
No functions operate during auto-
matic operation, and some/all func-
tions do not during manual opera-
tion.
X
X
(ACC, ON
START
signal)
4
Some of the seat
system functions
do not operate
during automatic
operation.
Sliding
Reclining
Lifting (Front)
Lifting (Rear)
5
No automatic operation functions
operate.
X
X
6
Drive position cannot be retained in
the memory.
X
(IGN ON
signal)
X
7
Does not operate
during manual
operation. (Oper-
ates during auto-
matic operation.)
Sliding
X
Reclining
X
Lifting (Front)
X
Lifting (Rear)
X
8
Automatic operation cannot be can-
celed.
X
9
Memory indicator does not light up.
X
X : Applicable
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont’d)
EL-201
SEL601W
DIAGNOSTIC PROCEDURE 1
=NBEL0214S04
(Power supply and ground circuit for driver’s seat control unit)
Power Supply Circuit Check
NBEL0214S0401
Check voltage between seat control unit LH terminal 1 and ground.
Terminals
Ignition switch position
OFF
ACC
ON
START
1 - Ground
Battery voltage
If NG, check the following.
I
40A fusible link (letter f, located in the fuse and fusible link box)
I
Circuit breaker
I
Harness for open or short between circuit breaker and seat
control unit LH
SEL602W
Ground Circuit Check
NBEL0214S0402
Check continuity between seat control unit LH terminal 33 and
ground.
Terminals
Continuity
33 - Ground
Yes
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont’d)
EL-202
DIAGNOSTIC PROCEDURE 2
=NBEL0214S05
(Sliding encoder check)
1
CHECK SLIDING ENCODER OUTPUT SIGNAL
Measure voltage between seat control unit LH terminal 18 and ground with CONSULT-II or oscilloscope when power seat
slide is operated.
SEL603W
OK or NG
OK
©
Sliding encoder is OK.
NG
©
GO TO 2.
2
CHECK SLIDING ENCODER INPUT SIGNAL
Check voltage between seat control unit LH terminal 17 and ground.
SEL604W
OK or NG
OK
©
GO TO 3.
NG
©
Replace seat control unit LH.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont’d)
EL-203
3
CHECK SLIDING ENCODER OPEN CIRCUIT
1. Disconnect seat control unit LH connector and sliding device LH connector.
2. Check harness continuity between seat control unit LH connector and sliding device LH connector.
SEL605WA
OK or NG
OK
©
GO TO 4.
NG
©
Repair harness.
4
CHECK SLIDING ENCODER SHORT CIRCUIT
Check harness continuity between seat control unit LH connector and ground.
SEL606W
OK or NG
OK
©
Replace sliding encoder.
NG
©
Repair harness.
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont’d)
EL-204
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