Nissan Altima L32. Instruction — part 205
REAR WINDOW DEFOGGER SYSTEM
DEF-7
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
Component Parts Location
INFOID:0000000004205786
Component Description
INFOID:0000000004205787
AWCIA0010ZZ
1.
BCM M16, M17, M18, M19 (view with
instrument panel removed)
2.
IPDM E/R E17
3.
A. Fuse block (J/B)
B. Rear window defogger relay J-4
4.
Front air control (rear window defogger
switch) M37
5.
Door mirror (door mirror defogger)
LH D4, RH D107 (if equipped)
6.
A. Rear window defogger (+) B53
B. Condenser B52 (view with rear pil-
lar finisher LH removed)
7.
Rear window defogger (-) B54 (view
with rear pillar finisher RH removed)
BCM
• Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.
Rear window defogger relay
• Operates the rear window defogger and the door mirror defogger with the control signal from
BCM.
Front air control (rear window
defogger switch)
• The rear window defogger switch is turned ON.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.
DEF-8
< FUNCTION DIAGNOSIS >
REAR WINDOW DEFOGGER SYSTEM
*:
With heated mirrors
Rear window defogger
• Heats the heating wire with the power supply from the rear window defogger relay to prevent
the rear window from fogging up.
Door mirror defogger
*
• Heats the heating wire with the power supply from the rear window defogger relay to prevent
the door mirror from fogging up.
DIAGNOSIS SYSTEM (BCM)
DEF-9
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function
INFOID:0000000004501278
ECU IDENTIFICATION
Displays the BCM part No.
SELF-DIAG RESULT
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)
INFOID:0000000004501279
DATA MONITOR
ACTIVE TEST
Monitor Item
[Unit]
Description
PUSH SW [ON/OFF]
Indicates condition of push switch
REAR DEF SW [ON/OFF] Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch
Test Item
Description
REAR DEFOGGER
This test is able to check rear window defogger operation. Rear window defogger operates
when ’ON" on CONSULT-III screen is touched
DEF-10
< COMPONENT DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH
COMPONENT DIAGNOSIS
REAR WINDOW DEFOGGER SWITCH
Description
INFOID:0000000004205791
• 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:0000000004205792
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:0000000004205793
1.
CHECK FRONT AIR CONTROL (REAR WINDOW DEFOGGER SWITCH)
Does front air control operate normally?
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 2
2.
CHECK REAR WINDOW DEFOGGER SWITCH INDICATOR CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between front air control connector and ground.
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-8, "Removal and Installation"
.
NO
>> Repair or replace harness.
Terminals
Condition of rear
window defogger
switch
Voltage (V)
(Approx.)
(+)
(–)
Front air control
connector
Terminal
M37
22
Ground
ON Battery
voltage
OFF
0
ALLIA0174ZZ
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