IDX INFINITI QX4 2001 Factory Service Manual

PROCEDURE Diagnostic procedure
REFERENCE PAGE (EL- ) 213 214 215 216 217 220 220
SYMPTOM
DIAGNOSTIC PROCEDURE 8
[Lifting motor (front) check]
DIAGNOSTIC PROCEDURE 9
[Lifting motor (rear) check]
DIAGNOSTIC PROCEDURE 10
(Power seat switch check)
DIAGNOSTIC PROCEDURE 11
(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.
2Some of the seat
system functions
do not operate
during automatic/
manual operation.Sliding
Reclining
Lifting (Front) X
Lifting (Rear) X
3No functions operate during auto-
matic operation, and some/all func-
tions do not during manual opera-
tion.XX
(ACC, ON
START
signal)
4Some of the seat
system functions
do not operate
during automatic
operation.Sliding
Reclining
Lifting (Front)
Lifting (Rear)
5No automatic operation functions
operate.XX
6Drive position cannot be retained in
the memory.X
(IGN ON
signal)X
7Does not operate
during manual
operation. (Oper-
ates during auto-
matic operation.)Sliding X
Reclining X
Lifting (Front) X
Lifting (Rear) X
8Automatic operation cannot be can-
celed.X
9 Memory indicator does not light up.X
X : Applicable
GI
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LC
EC
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PD
AX
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BT
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IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-201

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
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LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
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IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-203

DIAGNOSTIC PROCEDURE 3=NBEL0214S06(Reclining encoder check)
1 CHECK RECLINING ENCODER OUTPUT SIGNAL
Measure voltage between seat control unit LH terminal 29 and ground with CONSULT-II or oscilloscope when power seat
reclining is operated.
SEL607W
OK or NG
OK©Reclining encoder is OK.
NG©GO TO 2.
2 CHECK RECLINING ENCODER INPUT SIGNAL
Check voltage between seat control unit LH terminal 17 and ground.
SEL608W
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-205

DIAGNOSTIC PROCEDURE 4=NBEL0214S07[Lifting encoder (front) check]
1 CHECK LIFTING ENCODER (FRONT) OUTPUT SIGNAL
Measure voltage between seat control unit LH terminal 19 and ground with CONSULT-II or oscilloscope when power seat
lifting (front) is operated.
SEL611W
OK or NG
OK©Lifting encoder (front) is OK.
NG©GO TO 2.
2 CHECK LIFTING ENCODER (FRONT) INPUT SIGNAL
Check voltage between seat control unit LH terminal 17 and ground.
SEL612W
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-207

DIAGNOSTIC PROCEDURE 5=NBEL0214S08[Lifting encoder (rear) check]
1 CHECK LIFTING ENCODER (REAR) OUTPUT SIGNAL
Measure voltage between seat control unit LH terminal 30 and ground with CONSULT-II or oscilloscope when power seat
lifting (rear) is operated.
SEL615W
OK or NG
OK©Lifting encoder (rear) is OK.
NG©GO TO 2.
2 CHECK LIFTING ENCODER (REAR) INPUT SIGNAL
Check voltage between seat control unit LH terminal 17 and ground.
SEL616W
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-209

DIAGNOSTIC PROCEDURE 6=NBEL0214S09(Sliding motor check)
1 CHECK OUTPUT SIGNAL TO SLIDING MOTOR
Check voltage between seat control unit LH terminals 3 or 10 and ground.
SEL619W
OK or NG
OK©GO TO 2.
NG©Replace seat control unit LH.
2 CHECK SLIDING MOTOR
1. Disconnect sliding device LH connector.
2. Apply 12V DC direct current to motor and check operation.
SEL620WA
OK or NG
OK©Check harness for operation between seat control unit LH and sliding motor.
NG©Replace sliding motor.
GI
MA
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LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-211

DIAGNOSTIC PROCEDURE 8=NBEL0214S11[Lifting motor (front) check]
1 CHECK OUTPUT SIGNAL TO LIFTING MOTOR (FRONT)
Check voltage between seat control unit LH terminals 5 or 13 and ground.
SEL623W
OK or NG
OK©GO TO 2.
NG©Replace seat control unit LH.
2 CHECK LIFTING MOTOR (FRONT)
1. Disconnect front lifting device LH connector.
2. Apply 12V DC direct current to motor and check operation.
SEL624WA
OK or NG
OK©Check harness for operation between seat control unit LH and lifting motor (front).
NG©Replace lifting motor (front).
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-213

DIAGNOSTIC PROCEDURE 10=NBEL0214S13(Power seat switch check)
1 CHECK POWER SEAT SWITCH
1. Disconnect power seat switch LH connector.
2. Check continuity between power seat switch terminals.
SEL569X
OK or NG
OK©Check the following.
IGround circuit for power seat switch
IHarness for open or short between seat control unit LH and power seat switch
NG©Replace power seat switch.
GI
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LC
EC
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PD
AX
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ST
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BT
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IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-215

DIAGNOSTIC PROCEDURE 12=NBEL0214S15(Key, detention, door switch and vehicle speed sensor check)
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between seat control unit LH terminal 2 and ground.
SEL629W
OK or NG
OK©GO TO 2.
NG©Check the following.
I7.5A fuse [No. 24, located in fuse block (J/B)]
IKey switch
IHarness for open or short between key switch and fuse
IHarness for open or short between seat control unit LH and key switch
2 CHECK IGNITION SWITCH INPUT SIGNAL (ON AND START)
Check voltage between seat control unit LH terminals and ground.
SEL630W
OK or NG
OK©GO TO 3.
NG©Check the following.
I7.5A fuse [No. 11, located in fuse block (J/B)]
I7.5A fuse [No. 26, located in fuse block (J/B)]
IHarness for open or short between seat control unit LH and fuse
GI
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LC
EC
FE
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PD
AX
SU
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ST
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BT
HA
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IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-217

6 CHECK VEHICLE SPEED SENSOR PULL UP VOLTAGE
1. Turn ignition switch ªONº.
2. Check voltage between seat control unit LH terminal 32 and ground.
SEL633W
OK or NG
OK©Harness for open or short between seat control unit LH and combination meter.
NG©Repair harness.
GI
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LC
EC
FE
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PD
AX
SU
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ST
RS
BT
HA
SC
IDX
AUTOMATIC DRIVE POSITIONER
Trouble Diagnoses (Cont'd)
EL-219