Infiniti QX4 (R50). Manual — part 373
DOOR, HOOD AND GLASS HATCH SWITCH CHECK
=NBEL0123S04
Door Switch Check
NBEL0123S0401
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-301.
OK or NG
OK
©
Door switch is OK, and go to hood switch check.
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.
I
Door switch ground circuit (Front LH, back door) or door switch ground condition
I
Harness 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
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-309
Hood Switch Check
=NBEL0123S0402
1
CHECK HOOD SWITCH FITTING CONDITION
OK or NG
OK
©
GO TO 2.
NG
©
Adjust installation of hood switch or hood.
2
CHECK HOOD SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminal 27 and ground.
SEL337X
Refer to wiring diagram in EL-300.
OK or NG
OK
©
Hood switch is OK, and go to glass hatch switch check.
NG
©
GO TO 3.
3
CHECK HOOD SWITCH
1. Disconnect hood switch connector.
2. Check continuity between hood switch terminals 1 and 2.
SEL338X
OK or NG
OK
©
Check the following.
I
Hood switch ground circuit
I
Harness for open or short between smart entrance control unit and hood switch
NG
©
Replace hood switch.
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-310
Glass Hatch Switch Check
=NBEL0123S0403
1
CHECK GLASS HATCH SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminal 38 and ground.
SEL339X
Refer to wiring diagram in EL-300.
OK or NG
OK
©
Glass hatch switch is OK.
NG
©
GO TO 2.
2
CHECK GLASS HATCH SWITCH
1. Disconnect glass hatch switch connector.
2. Check continuity between glass hatch switch terminals 1 and 2.
SEL340X
OK or NG
OK
©
Check the following.
I
Glass hatch switch ground circuit
I
Harness for open or short between smart entrance control unit and glass hatch switch
NG
©
Replace glass hatch switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-311
SECURITY INDICATOR LAMP CHECK
=NBEL0123S05
1
CHECK INDICATOR LAMP OUTPUT SIGNAL
1. Disconnect smart entrance control unit connector.
2. Check voltage between control unit terminal 31 and ground.
SEL341X
Refer to wiring diagram in EL-300.
OK or NG
OK
©
Security indicator lamp is OK.
NG
©
GO TO 2.
2
CHECK INDICATOR LAMP
OK or NG
OK
©
GO TO 3.
NG
©
Replace indicator lamp.
3
CHECK POWER SUPPLY CIRCUIT FOR INDICATOR LAMP
1. Disconnect security lamp connector.
2. Check voltage between indicator lamp terminal 1 and ground.
SEL342X
OK or NG
OK
©
Check harness for open or short between security indicator lamp and control unit.
NG
©
Check the following.
I
7.5A fuse [No. 24, located in fuse block (J/B)]
I
Harness for open or short between security indicator lamp and fuse
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont’d)
EL-312
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