2004 NISSAN TERRANO Service Repair Manual

Wiring Diagram Ð CLOCK Ð
YEL198D
HORN, CIGARETTE LIGHTER AND CLOCK
EL-124
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System Description
The rear window defogger system is controlled by the time control unit. The rear window defogger operates
only for approximately 15 minutes.
Rear window defogger switch is built into the A/C control panel.
Power is supplied at all times
Ithrough 10A fuse [No. 5, located in the fuse block (J/B)]
I to time control unit terminal U09.
With the ignition switch in the ON or START position, power is supplied
I through 10A fuse [No. 26, located in the fuse block (J/B)]
I to time control unit terminal U01
I to rear window defogger relay coil power side.
Ground is supplied
I to time control unit terminal U16
I through terminal MM2 of fuse block (J/B)
I through body grounds F36, F47 (LHD models) or M33, M754 (RHD models)
I to terminal 5 of A/C control panel (rear window defogger switch)
I through body grounds M33 and M754.
When the rear defogger switch is turned ON, ground is supplied
I through terminals 3 and 5 of A/C control panel (rear defogger switch)
I through terminal M19 of fuse block (J/B)
I to time control unit terminal U03.
Terminal U13 of time control unit then supplies ground to the rear window defogger relay coil ground side.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
I through 15A fuse [No. 14 and No. 15, located in the fuse block (J/B)]
I to the rear window defogger terminal 1
I through 10A fuse [No. 1, located in the fuse block (J/B)]
I to door mirror LH/RH (defogger) terminal 3.
Ground is supplied
I to rear window defogger terminal 2
I to door mirror LH/RH terminal 2
I through body grounds B10 and B18.
With power and ground supplied, the rear window defogger filaments heat and defog the rear window.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-125
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Wiring Diagram Ð DEF Ð
YEL779E
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-126
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YEL121D
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Wiring Diagram Ð DEF Ð (Cont'd)EL-127
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Trouble Diagnoses
SYMPTOM CHART
SymptomDiagnoses service procedure
Rear window defogger and door mirror defogger do not activate. 1. Check time control unit power supply and ground circuit. 2. Check rear window defogger switch.
3. Check rear window defogger switch circuit.
4. Check rear window defogger signal.
5. Check rear window defogger relay.
Rear window defogger or door mirror defogger do not activate. 1. Check fuse (No. 14, No. 15 or No. 1). 2. Check filament.
3. Check harness between fuse block (J/B) and defogger.
4. Check defogger ground circuit.
Rear window defogger and door mirror defogger do not go off
after activating about 15 minutes. 1. Check time control unit power supply and ground circuit.
2. Check rear window defogger switch.
3. Check rear window defogger switch circuit.
POWER SUPPLY AND GROUND CIRCUIT CHECK
Main power supply circuit check
Terminals
Ignition switch position
!@ OFF ACC ON
U09GroundBattery
voltage Battery
voltage Battery
voltage
U01Ground ÐÐBattery
voltage
Ground circuit check
Terminals Continuity
U16- GroundYes
YEL888E
YEL300D
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
EL-128
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CHECK REAR WINDOW DEFOGGER SWITCH
1. Disconnect A/C control panel connector(rear window defogger switch)
M771.
2. Check continuity between terminals q
3
andq5.
With rear window defogger switch ON:
Continuity should exist.
With rear window defogger switch OFF:
Continuity should not exist.
OK
ENG Replace rear window
defogger switch.
Rear window defogger switch is OK.
CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT
1. Check continuity between fuse block
(J/B) connector terminal
M19and A/C
control panel connector terminal q
3.
Continuity should exist.
2. Check continuity between fuse block (J/B) connector terminal
M19and
ground.
Continuity should not exist.
OK
ENG Repair harness or connec-
tor.
1. Check continuity between A/C control
panel connector terminal q
5and
ground.
Continuity should exist.
OK
ENG Repair harness or connec-
tor.
Rear window defogger switch circuit is
OK.
YEL889E
YEL890E
YEL891E
H
H
H
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Trouble Diagnoses (Cont'd)
EL-129
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CHECK REAR WINDOW DEFOGGER SIGNAL
1. Check voltage between fuse block(J/B) terminal
M19and ground.
With rear window defogger switch ON: Approx. 0V
With rear window defogger switch OFF: Battery voltage
OK
ENG Replace time control unit.
1. Disconnect time control unit.
2. Ignition switch ON.
3. Check voltage between time control unit terminal
U13and ground.
Battery voltage should exist.
OK
ENG Replace time control unit.
Rear window defogger signal is OK.
CHECK REAR WINDOW DEFOGGER RELAY
1. Check voltage between fuse block
(J/B) terminals
BM1,M26and ground.
With rear window defogger switch ON: Battery voltage
OK
ENG Replace rear window relay.
Rear window defogger relay is OK.
YEL892E
YEL893E
YEL894E
H
H
H
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Trouble Diagnoses (Cont'd)
EL-130
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CHECK REAR WINDOW/DOOR MIRROR DEFOGGER
CIRCUIT
CHECK REAR WINDOW DEFOGGER
CIRCUIT.
1. Disconnect rear window defogger con-nector.
2. Check continuity between rear window defogger connector terminal 1and fuse
block (J/B) terminal
BM1.
Continuity should exist.
3. Check continuity between rear window defogger connector terminal q
2and
ground.
Continuity should not exist.
OK
ENG Repair or replace harness.
CHECK DOOR MIRROR DEFOGGER
CIRCUIT.
1. Disconnect door mirror defogger con-
nector.
2. Check continuity between door mirror defogger connector terminal q
3and
fuse block (J/B) terminal
M26.
Continuity should exist.
3. Check continuity between door mirror defogger connector terminal q
2and
ground.
Continuity should exist.
OK
ENG Repair or replace harness.
Rear window defogger and door mirror
defogger circuit is OK.
YEL895E
YEL896E
YEL897E
YEL898E
H
H
REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER
Trouble Diagnoses (Cont'd)
EL-131
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