2001 INFINITI QX4 diagram

DOOR LOCK ACTUATOR CHECK=NBEL0110S04
1 CHECK DOOR LOCK ACTUATOR CIRCUIT
Check voltage for door lock actuator.
IDoor lock actuator front LH
SEL316X
IDoor lock actuator front RH, rear and back
SEL317X
Refer to wiring diagram in EL-259.
OK or NG
OK©GO TO 2.
NG©Replace smart entrance control unit. (Before replacing smart entrance control unit, per-
form ªDOOR LOCK/UNLOCK SWITCH CHECKº.)
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-268

Wiring Diagram Ð MULTI ÐNBEL0114FIG. 1NBEL0114S01
MEL854L
MULTI-REMOTE CONTROL SYSTEM
Wiring Diagram Ð MULTI Ð
EL-274

FIG. 2NBEL0114S02
MEL855L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Wiring Diagram Ð MULTI Ð (Cont'd)
EL-275

FIG. 3NBEL0114S03
MEL856L
MULTI-REMOTE CONTROL SYSTEM
Wiring Diagram Ð MULTI Ð (Cont'd)
EL-276

POWER SUPPLY AND GROUND CIRCUIT CHECK=NBEL0115S04
1 CHECK MAIN POWER SUPPLY CIRCUIT FOR CONTROL UNIT
1. Disconnect connector from control unit.
2. Check voltage between smart entrance control unit terminal 10 or 11 and ground.
SEL320X
Refer to wiring diagram in EL-274.
OK or NG
OK©GO TO 2.
NG©Check the following.
I40A fusible link (letterf, located in fuse and fusible link box)
I7.5A fuse [No. 24, located in fuse block (J/B)]
IM145 circuit breaker
IHarness for open or short between smart entrance control unit and fuse
2 CHECK IGNITION SWITCH ªACCº CIRCUIT
1. Disconnect smart entrance control unit connector.
2. Check voltage between control unit terminal 21 and ground while ignition switch is ªACCº.
SEL321X
Refer to wiring diagram in EL-274.
OK or NG
OK©GO TO 3.
NG©Check the following.
I10A fuse [No. 10, located in fuse block (J/B)]
IHarness for open or short between smart entrance control unit and fuse
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-279

3 CHECK GROUND CIRCUIT FOR CONTROL UNIT
Check continuity between terminal 16 and ground.
SEL322X
Refer to wiring diagram in EL-274.
OK or NG
OK©Power supply and ground circuits are OK.
NG©Check ground harness.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-280

DOOR SWITCH CHECK=NBEL0115S05
1 CHECK DOOR SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminals 28, 29 or 40 and ground.
SEL305X
Refer to wiring diagram in EL-275.
OK or NG
OK©Door switch is OK.
NG©GO TO 2.
2 CHECK DOOR SWITCH
1. Disconnect door switch connector.
2. Check continuity between door switch terminals.
SEL306X
OK or NG
OK©Check the following.
IDoor switch ground circuit (Front, back door) or door switch ground condition
IHarness for open or short between smart entrance control unit and door switch
NG©Replace door switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-281

KEY SWITCH (INSERT) CHECK=NBEL0115S07
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminal 32 and ground.
SEL307X
Refer to wiring diagram in EL-274.
OK or NG
OK©Key switch is OK.
NG©GO TO 2.
2 CHECK KEY SWITCH (INSERT)
Check continuity between terminals 1 and 2.
SEL308X
OK or NG
OK©Check the following.
I7.5A fuse [No. 24, located in fuse block (J/B)]
IHarness for open or short between key switch and fuse
IHarness for open or short between smart entrance control unit and key switch
NG©Replace key switch.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-282