Nissan Frontier. Manual — part 230
DEF-8
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH
DTC/CIRCUIT DIAGNOSIS
REAR WINDOW DEFOGGER SWITCH
Description
INFOID:0000000009479590
• The rear window defogger is operated by turning the rear window defogger switch ON.
• Turns the indicator lamp in the rear window defogger switch ON when operating the rear window defogger.
Component Function Check
INFOID:0000000009479591
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Check that the indicator lamp of rear window defogger illuminates with rear window defogger switch ON.
Is the inspection result normal?
YES
>> Rear window defogger switch function is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009479592
Regarding Wiring Diagram information, refer to
.
1.
CHECK REAR WINDOW DEFOGGER SWITCH REQUEST SIGNAL
1. Turn ignition switch ON.
2. Check voltage between front air control harness connector and ground.
Is the inspection result normal?
YES
>> Refer to
GI-42, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
CHECK REAR WINDOW DEFOGGER SWITCH VOLTAGE SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front air control.
3. Turn ignition switch ON.
4. Check voltage between front air control harness connector and ground.
Terminals
Condition of rear window
defogger switch
Voltage (V)
(Approx.)
(+)
(–)
Front air control connec-
tor
Terminal
M49
(with manual A/C type 2)
11
Ground
ON 0
M50
(with manual A/C type 1)
16
OFF
5
M52
(with auto A/C)
REAR WINDOW DEFOGGER SWITCH
DEF-9
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
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K
M
A
B
DEF
N
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Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-7, "Removal and Installation"
.
NO
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector M19.
3. Check continuity between BCM harness connector M19 terminal 41 and front air control harness connec-
tor.
4. Check continuity between BCM harness connector M19 terminal 41 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-49, "Removal and Installation"
NO
>> Repair or replace harness as necessary.
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Front air control connector
Terminal
M49
(with manual A/C type 2)
11
Ground
5
M50
(with manual A/C type 1)
16
M52
(with auto A/C)
BCM connector
Terminal
Front air control connector
Terminal
Continuity
M19
41
M49 (with manual A/C type 2)
11
Yes
M50 (with manual A/C type 1)
16
M52 (with auto A/C)
BCM connector
Terminal
Ground
Continuity
M19
41
No
DEF-10
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
Description
INFOID:0000000009479593
Power is supplied to the rear window defogger with BCM control.
Component Function Check
INFOID:0000000009479594
1.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
Check that an operation noise of rear window defogger relay (located in IPDM E/R) can be heard when turning
the rear window defogger switch ON.
Is the inspection result normal?
YES
>> Rear window defogger relay power supply circuit is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009479595
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES
Check if any of the following fuses in the IPDM E/R are blown.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R harness connector E124 ter-
minal 60 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace IPDM E/R. Refer to
PCS-28, "Removal and Installation of IPDM E/R"
.
3.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
GI-42, "Intermittent Incident"
Is the inspection result normal?
YES
>> Check the following.
• Battery power supply circuit
• IPDM E/R
NO
>> Repair or replace the malfunctioning parts.
COMPONENT PARTS
AMPERE
FUSE NO.
IPDM E/R
15A
46
IPDM E/R
15A
47
Terminals
Condition of rear
window defogger
switch
Voltage (V)
(Approx.)
(+)
(–)
IPDM E/R con-
nector
Terminal
E124
60
Ground
ON Battery
voltage
OFF
0
LIIA2190E
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DEF-11
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
Description
INFOID:0000000009479596
Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.
Component Function Check
INFOID:0000000009479597
1.
CHECK REAR WINDOW DEFOGGER
Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch
ON.
Is the inspection result normal?
YES
>> Rear window defogger is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009479598
Regarding Wiring Diagram information, refer to
.
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between rear window defogger harness connec-
tor B165 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear window defogger.
3. Check continuity between rear window defogger harness con-
nector B210 terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness as necessary.
3.
CHECK HARNESS CONTINUITY
Terminals
Condition of rear
window
defogger switch
Voltage (V)
(Approx.)
(+)
(–)
Rear window
defogger
connector
Terminal
B165
1
Ground
ON
Battery voltage
OFF
0
ALLIA0177ZZ
Rear window defogger connector
Terminal
Ground
Continuity
B210
2
Yes
ALLIA0178ZZ
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