Nissan Silvia. Manual — part 202
Wiring Diagram — DEF —
=NMEL0074
TEL813B
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
REAR WINDOW DEFOGGER
Wiring Diagram — DEF —
EL-97
Trouble Diagnoses
NMEL0075
DIAGNOSTIC PROCEDURE
NMEL0075S01
SYMPTOM: Rear window defogger does not activate, or does
not go off after activating.
1
CHECK REAR WINDOW DEFOGGER OUTPUT SIGNAL
1. Turn ignition switch to ON position.
2. Check voltage between combination meter harness connector M19 terminal 37 (L/W) and ground.
SEL234Y
OK or NG
OK
©
Check the following.
I
Rear window defogger relay
(Refer to EL-100.)
I
Rear window defogger circuit
I
Rear window defogger filament
(Refer to EL-101.)
NG
©
GO TO 2.
2
CHECK DEFOGGER RELAY COIL SIDE CIRCUIT
1. Disconnect combination meter harness connector.
2. Turn ignition switch to ON position.
3. Check voltage between combination meter harness connector M19 terminal 37 (L/W) and ground.
SEL235Y
OK or NG
OK
©
GO TO 3.
NG
©
Check the following.
I
10A fuse [No. 5, located in the fuse block (J/B)]
I
Rear window defogger relay
I
Harness for open or short between fuse and rear window defogger relay
I
Harness for open or short between rear window defogger relay and combination meter
REAR WINDOW DEFOGGER
Trouble Diagnoses
EL-98
3
CHECK REAR WINDOW DEFOGGER SWITCH INPUT SIGNAL
Check continuity between combination meter harness connector M18 terminal 20 (LG/R) and ground.
SEL236Y
OK or NG
OK
©
GO TO 4.
NG
©
Check the following.
I
Rear window defogger switch
(Refer to EL-100.)
I
Harness for open or short between combination meter and rear window defogger
switch
I
Rear window defogger switch ground circuit
4
CHECK IGNITION INPUT SIGNAL
Check voltage between combination meter harness connector M18 terminal 12 (G/Y) and ground.
SEL216Y
OK or NG
OK
©
GO TO 5.
NG
©
Check the following.
I
10A fuse [No. 11, located in the fuse block (J/B)]
I
Harness for open or short between combination meter and fuse
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
REAR WINDOW DEFOGGER
Trouble Diagnoses (Cont’d)
EL-99
5
CHECK COMBINATION METER GROUND CIRCUIT
Check continuity between combination meter harness connector M18 terminal 9 (B) and ground.
SEL237Y
OK or NG
OK
©
Replace unified meter control unit.
NG
©
Repair harness or connector.
SEC202B
Electrical Components Inspection
NMEL0076
REAR WINDOW DEFOGGER RELAY
NMEL0076S01
Check continuity between terminals 3 and 5, 6 and 7.
Condition
Continuity
12V direct current supply between ter-
minals 1 and 2
Yes
No current supply
No
SEL430TH
REAR WINDOW DEFOGGER SWITCH
NMEL0076S02
Check continuity between terminals when rear window defogger
switch is pushed and released.
Terminals
Condition
Continuity
1 - 2
Rear window defogger
switch is pushed.
Yes
Rear window defogger
switch is released.
No
REAR WINDOW DEFOGGER
Trouble Diagnoses (Cont’d)
EL-100
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