Infiniti G20 (P11). Manual — part 365
2
CHECK TRUNK LID KEY CYLINDER SWITCH
1. Disconnect trunk lid key cylinder switch connector.
2. Check continuity between trunk lid key cylinder switch terminals.
MTBL0167
SEL942V
OK or NG
OK
©
Check the following.
I
Trunk lid key cylinder switch ground circuit
I
Harness for open or short between control unit and trunk lid key cylinder switch
NG
©
Replace trunk lid key cylinder switch.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses (Cont’d)
EL-237
VEHICLE SECURITY HORN ALARM CHECK
=NCEL0123S09
1
CHECK VEHICLE SECURITY HORN ALARM OPERATION
1. Disconnect control unit connector.
2. Apply ground to control unit terminal 19.
SEL734W
Refer to wiring diagram in EL-222.
Yes
©
Horn alarm is OK.
No
©
GO TO 2.
2
CHECK HORN RELAY
Check horn relay.
OK or NG
OK
©
GO TO 3.
NG
©
Replace.
3
CHECK POWER SUPPLY FOR HORN RELAY
1. Disconnect horn relay connector.
2. Check voltage between terminal 1 and ground.
SEL673W
OK or NG
OK
©
GO TO 4.
NG
©
Check the following.
I
10A fuse (No. 36, located in the fuse and fusible link box)
I
Harness for open or short between vehicle security horn relay and fuse
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses (Cont’d)
EL-238
4
CHECK HORN RELAY CIRCUIT
1. Disconnect horn relay connector.
2. Check voltage between terminals 3 and 5.
3. Check voltage between terminals 6 and 7.
SEL674W
OK or NG
OK
©
Check harness for open or short between vehicle security horn relay and control unit.
NG
©
Check the following.
I
10A fuse (No. 41, located in the fuse and fusible link box)
I
Harness for open or short between fuse and horn relay
I
Harness for open or short between horn relay and horns
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses (Cont’d)
EL-239
VEHICLE SECURITY HEADLAMP ALARM CHECK
=NCEL0123S10
1
CHECK VEHICLE SECURITY HEADLAMP ALARM OPERATION
1. Disconnect control unit connector.
2. Apply ground to control unit terminal 4.
SEL943V
Refer to wiring diagram in EL-222.
Does headlamp alarm activate?
Yes
©
Headlamp alarm is OK.
No
©
GO TO 2.
2
CHECK HEADLAMP OPERATION
Does headlamp come on when turning lighting switch “ON”?
Yes
©
GO TO 3.
No
©
Check headlamp system. Refer to “HEADLAMP”.
3
CHECK VEHICLE SECURITY LAMP RELAY
Check vehicle security lamp relay.
OK or NG
OK
©
GO TO 4.
NG
©
Replace.
4
CHECK POWER SUPPLY FOR VEHICLE SECURITY LAMP RELAY
1. Disconnect vehicle security lamp relay connector.
2. Check voltage between vehicle security lamp relay connector E48 terminal 1 (G/R) and ground.
SEL956X
Refer to wiring diagram in EL-222.
Battery voltage should exist.
OK or NG
OK
©
GO TO 5.
NG
©
Check the following.
I
10A fuse (No. 36, located in the fuse and fusible link box)
I
Harness for open or short between vehicle security lamp relay and fuse
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses (Cont’d)
EL-240
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