Infiniti QX4 (R50). Manual — part 362
DOOR LOCK/UNLOCK SWITCH CHECK
=NBEL0110S03
1
CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
1. Disconnect smart entrance control unit connector.
2. Check continuity between control unit terminal 23 or 35 and ground.
SEL309X
Refer to wiring diagram in EL-257.
OK or NG
OK
©
Door lock/unlock switch is OK.
NG
©
GO TO 2.
2
CHECK DOOR LOCK/UNLOCK SWITCH
1. Disconnect door lock/unlock switch connector.
2. Check continuity between each door lock/unlock switch terminals.
I
Power window main switch (Door lock/unlock switch LH)
SEL310X
I
Door lock/unlock switch RH
SEL311X
OK or NG
OK
©
Check the following.
I
Ground circuit for door lock/unlock switch
I
Harness for open or short between door lock/unlock switch and smart entrance control
unit connector
NG
©
Replace door lock/unlock switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-265
FRONT DOOR KEY CYLINDER SWITCH CHECK
=NBEL0110S07
1
CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK/UNLOCK SIGNAL)
Check voltage between smart entrance control unit terminals 30 or 41 and ground.
SEL312X
Refer to wiring diagram in EL-258.
OK or NG
OK
©
Door key cylinder switch LH is OK.
NG
©
GO TO 2.
2
CHECK DOOR KEY CYLINDER SWITCH
1. Disconnect door key cylinder switch connector.
2. Check continuity between door key cylinder switch terminals.
SEL313X
OK or NG
OK
©
Check the following.
I
Door key cylinder switch LH ground circuit
I
Harness for open or short between smart entrance control unit and door key cylinder
switch LH
NG
©
Replace door key cylinder switch LH.
POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-266
BACK DOOR KEY CYLINDER SWITCH CHECK
=NBEL0110S08
1
CHECK BACK DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK/UNLOCK SIGNAL)
Check voltage between smart entrance control unit terminals 30 or 41 and ground.
SEL314X
Refer to wiring diagram in EL-258.
OK or NG
OK
©
Back door key cylinder switch is OK.
NG
©
GO TO 2.
2
CHECK BACK DOOR KEY CYLINDER SWITCH
1. Disconnect back door key cylinder switch connector.
2. Check continuity between back door key cylinder switch terminals.
SEL315X
OK or NG
OK
©
Check the following.
I
Back door key cylinder switch ground circuit
I
Harness for open or short between smart entrance control unit and back door key cyl-
inder switch
NG
©
Replace back door key cylinder switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-267
DOOR LOCK ACTUATOR CHECK
=NBEL0110S04
1
CHECK DOOR LOCK ACTUATOR CIRCUIT
Check voltage for door lock actuator.
I
Door lock actuator front LH
SEL316X
I
Door 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 “DOOR LOCK/UNLOCK SWITCH CHECK”.)
POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-268
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