2005 NISSAN X-TRAIL ignition

REAR WINDOW DEFOGGER
GW-17
C
D
E
F
G
H
J
K
L
MA
B
GW

REAR WINDOW DEFOGGERPFP:25350
Component Parts and Harness Connector LocationEIS0045L
System Description / LHD ModelsEIS0045M
The rear window defogger system is controlled by time control unit. The rear window defogger operates only
for approximately 15 minutes.
Power is supplied at all times

through 20A fuse (No.25, located in the fuse and fusible link box) and

to rear window defogger relay terminal 3 (with door mirror defogger or side air bag) or

to rear window defogger relay terminal 5 (without door mirror defogger or side air bag) .

through 10A fuse [No.27, located in the fuse block (J/B)]

to rear window defogger relay terminal 6 (with door mirror defogger).

through 10A fuse [No.28, located in the fuse block (J/B)]

to time control unit terminal 1.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No.5, located in the fuse block (J/B)]

to rear window defogger relay terminal 1 and

to time control unit terminal 17.
Ground is supplied

to rear window defogger switch terminals 2 and 4 (without auto A/C) or

to A/C auto amp. Terminal 3 (with auto A/C)

through body ground M27 and M70.
When the rear window defogger switch is turned ON, ground is supplied

to time control unit terminal 35

through rear window defogger switch terminal 1 (without auto A/C) or

through A/C auto amp, terminal 22 (with auto A/C).
Terminal 27 of the time control unit then supplies ground to the rear window defogger relay terminal 2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied

through rear window defogger relay terminals 5 and 7 (with door mirror defogger or side air bag)

through rear window defogger relay terminal 3 (without door mirror defogger or side air bag)

to the rear window defogger and door mirror defogger (with door mirror defogger).
The rear window defogger and door mirror defogger has an independent ground.
PIIA9619E

GW-18
REAR WINDOW DEFOGGER

With power and ground supplied, the rear window defogger and door mirror defogger filaments heat and defog
the rear window and door mirror.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
Power is supplied

through rear window defogger relay terminal 3 (without door mirror defogger or side air bag) or

through rear window defogger relay terminal 5 (with door mirror defogger or side air bag)

to rear window defogger switch terminal 3 (without auto A/C) or

to A/C auto amp, terminal 23 (with auto A/C).
System Description / RHD ModelsEIS008O7
The rear window defogger system is controlled by time control unit. The rear window defogger operates only
for approximately 15 minutes.
Power is supplied at all times

through 20A fuse (No.25, located in the fuse and fusible link box) and

to rear window defogger relay terminal 3 (with side air bag) or

to rear window defogger relay terminal 5 (without side air bag).
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No.5, located in the fuse block (J/B)]

to rear window defogger relay terminal 1 and

to time control unit terminal 17.
Ground is supplied

to rear window defogger switch terminals 2 and 4 (without auto A/C) or

to A/C auto amp. Terminal 3 (with auto A/C)

through body ground M27 and M70.
When the rear window defogger switch is turned ON, ground is supplied

to time control unit terminal 35

through rear window defogger switch terminal 1 (without auto A/C) or

through A/C auto amp, terminal 22 (with auto A/C).
Terminal 27 of the time control unit then supplies ground to the rear window defogger relay terminal 2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied

through rear window defogger terminal 3 (without side air bag) or

through rear window defogger terminal 5 (with side air bag)

to the rear window defogger.
The rear window defogger and door mirror defogger has an independent ground.
With power and ground supplied, the rear window defogger and door mirror defogger filaments heat and defog
the rear window and door mirror.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
Power is supplied

through rear window defogger relay terminal 3 (without side air bag) or

through rear window defogger relay terminal 5 (with side air bag)

to rear window defogger switch terminal 3 (without auto A/C) or

to A/C auto amp, terminal 23 (with auto A/C).

REAR WINDOW DEFOGGER
GW-23
C
D
E
F
G
H
J
K
L
MA
B
GW

Terminals and Reference Value for Time Control Unit (RHD models)EIS0046H
Trouble DiagnosesEIS0045T

Check that other systems using the signal of the following systems operate normally.
LHD Models
RHD Models
TERMINALWIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
1 L Power source (Fuse) — Battery voltage
16 B Ground — 0
17 G Ignition switch ONIgnition switch positoin
(ON or START)Battery voltage
27 G/W Rear window defogger relay control signalRear window
defogger switch : ON 0
: OFF Battery voltage
35 LG/B Rear window defogger switch signalRear window
defogger switch: ON 0
: OFF Battery voltage
Symptom Diagnoses / Service procedure Refer to page
Rear window defogger does not operate.
(without door mirror defogger or side air back)1. Rear window defogger relay power supply check 1GW-24
2. Time control unit power supply and ground checkGW-25
3. Rear window defogger switch circuit checkGW-26
Rear window defogger and door mirror defogger
does not operate.
(with door mirror defogger)1. Rear window defogger relay power supply check 2GW-28
2. Time control unit power supply and ground checkGW-25
3. Rear window defogger switch circuit checkGW-26
Rear window defogger does not operate.
(with door mirror defogger)1. Rear window defogger circuit checkGW-26
Door mirror defogger does not operate.
(with door mirror defogger)1. Door mirror defogger circuit checkGW-32
Rear window defogger does not operate.
(with side air bag)1. Rear window defogger relay power supply check 2GW-282. Time control unit power supply and ground checkGW-25
3. Rear window defogger switch circuit checkGW-26
Rear window defogger switch does not light, but
rear window defogger operates.
(without door mirror defogger or)1. Rear window defogger indicator lamp circuit check 1GW-34
Rear window defogger switch does not light, but
rear window defogger operates.
(with side air back)1. Rear window defogger indicator lamp circuit check 2GW-36
Symptom Diagnoses / Service procedure Refer to page
Rear window defogger does not operate.
(without door side air back)1. Rear window defogger relay power supply check 1GW-24
2. Time control unit power supply and ground checkGW-25
3. Rear window defogger switch circuit checkGW-26
Rear window defogger does not operate.
(with side air bag)1. Rear window defogger relay power supply check 2GW-282. Time control unit power supply and ground checkGW-25
3. Rear window defogger switch circuit checkGW-26
Rear window defogger switch does not light, but
rear window defogger operates.
(without side air back)1. Rear window defogger indicator lamp circuit check 1GW-34
Rear window defogger switch does not light, but
rear window defogger operates.
(with side air back)1. Rear window defogger indicator lamp circuit check 2GW-36

GW-24
REAR WINDOW DEFOGGER

Rear Window Defogger Relay Power Supply Check 1EIS008AL
1. CHECK FUSE

Check 10A fuse [No. 5, located in fuse block (J/B)]

Check 20A fuse [No. 25, located in fuse block (J/B)]
NOTE:
Refer to GW-17, "
Component Parts and Harness Connector Location"
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
2, "POWER SUPPLY ROUTING"
2. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger relay harness
connector B29 terminal 1, 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between fuse block (J/B) and
rear window defogger relay.
3. CHECK REAR WINDOW DEFOGGER RELAY
Check continuity between rear window defogger relay terminal 3 and 5.
OK or NG
OK >> GO TO 4.
NG >> Replace rear window defogger relay1 (G/Y) - Ground : Battery voltage
5 (L/B) - Ground : Battery voltage
PIIA9549E
Terminal Condition Continuity
3512V direct current supply between
terminal 1 and 2Ye s
Not current supply No
PIIA2636J

REAR WINDOW DEFOGGER
GW-25
C
D
E
F
G
H
J
K
L
MA
B
GW

4. CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Installation rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between time control unit connector M31 terminal
27 and ground.
OK or NG
OK >> Rear window defogger relay power supply is OK.
NG >> GO TO 5.
5. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect time control unit connector and rear window defogger relay.
3. Check continuity between time control unit connector M31 termi-
nal 27 and rear window defogger relay connector B29 terminal
2.
OK or NG
OK >> Rear window defogger relay power supply is OK.
NG >> Repair or replace harness between time control unit and
rear window defogger relay.
Time Control Unit Power Supply and Ground CheckEIS008AM
1. CHECK FUSE

Check 10A fuse [No. 5, located in fuse block (J/B)]

Check 10A fuse [No. 28, located in fuse block (J/B)]
NOTE:
Refer to GW-17, "
Component Parts and Harness Connector Location"
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
2, "POWER SUPPLY ROUTING"
27 (G/W) - Ground : Battery voltage
PIIA9550E
27 (G/W) - 2 (G/W) : Continuity should exist.
PIIA9551E

GW-26
REAR WINDOW DEFOGGER

2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between time control unit connector M30, M31
terminal 1, 17 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check time control unit power supply circuit for open or
short.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect time control unit connector.
3. Check continuity between time control unit connector M30 termi-
nal 16 and ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Check time control unit ground circuit for open or short.
Rear Window Defogger Switch Circuit CheckEIS008AN
1. CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
1. Turn ignition switch ON.
2. Check voltage between time control unit connector and ground.
OK or NG
OK >> Rear window defogger switch is OK.
NG >> GO TO 2.1 (L) - Ground : Battery voltage
17 (G) - Ground : Battery voltage
PIIA9547E
16 (B/R) - Ground : Continuity should exist
PIIA9548E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M31 35 (LG/B) GroundRear window
defogger switch:ON 0
:OFF Battery voltage
PIIA9554E

REAR WINDOW DEFOGGER
GW-27
C
D
E
F
G
H
J
K
L
MA
B
GW

2. CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect time control unit and rear window defogger switch (without auto A/C) or A/C auto amp, (with
auto A/C) connector.
3.(Without auto A/C)
Check continuity between time control unit connector M31 termi-
nal 35 and rear window defogger switch connector M50 terminal
1.
(With auto A/C)
Check continuity between time control unit connector M31 termi-
nal 35 and A/C auto amp, connector M53 terminal 22.
OK >> GO TO 3.
NG >> Repair or replace harness between time control unit and
rear window defogger relay (without auto A/C) or A/C
auto amp, (with auto A/C).
3. CHECK TIME CONTROL UNIT OUTPUT SIGNAL
1. Connect time control unit connector.
2. Turn ignition switch ON.
3. Check voltage between time control unit connector M31 terminal
35 and ground.
OK or NG
OK >>
GO TO 4.(without auto A/C)

Check A/C auto amp.(with auto A/C). Refer to AT C - 3 4
NG >> Replace time control unit.35 (LG/B) - 1 (LG/B) : Continuity should exist.
PIIA9552E
35 (LG/B) - 22 (LG/B) : Continuity should exist.
PIIA9553E
35 (LG/B) - Ground : Battery voltage
PIIA9554E

GW-28
REAR WINDOW DEFOGGER

4. CHECK REAR WINDOW DEFOGGER SWITCH
Rear window defogger switch operate, check continuity between rear window defogger switch connector M50
terminal 1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace rear window defogger switch.
5. CHECK REAR WINDOW DEFOGGER SWITCH GROUND
Check continuity between rear window defogger switch connector
M50 terminal 2 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Repair or replace harness between rear window defog-
ger switch and ground.
Rear Window Defogger Relay Power Supply Check 2EIS008AO
1. CHECK FUSE

Check 10A fuse [No. 5, located in fuse block (J/B)]

Check 20A fuse [No. 25, located in fuse block (J/B)]
NOTE:
Refer to GW-17, "
Component Parts and Harness Connector Location"
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
2, "POWER SUPPLY ROUTING"
2. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger relay connector
B6 terminal 1, 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between fuse block (J/B) and
rear window defogger relay.
Connector Terminal Condition Continuity
M50 1 2Rear window: ON Yes
Defogger switch: OFF No
PIIA9555E
2 (B) - Ground : Continuity should exist.
PIIA9556E
1 (G/Y) - Ground : Battery voltage
3 (L/B) - Ground : Battery voltage
PIIA9557E