Infiniti M45 (Y34). Manual — part 499
ELECTRICAL LOAD SIGNAL
EC-685
C
D
E
F
G
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M
A
EC
ELECTRICAL LOAD SIGNAL
PFP:25350
Description
ABS002U9
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from combination meter to ECM.
CONSULT-II Reference Value in Data Monitor Mode
ABS0033E
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
LOAD SIGNAL
●
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
EC-686
ELECTRICAL LOAD SIGNAL
Wiring Diagram
ABS0033F
TBWA0318E
ELECTRICAL LOAD SIGNAL
EC-687
C
D
E
F
G
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J
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M
A
EC
TBWA0319E
EC-688
ELECTRICAL LOAD SIGNAL
Diagnostic Procedure
ABS002UA
1.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1.
Turn ignition switch ON.
2.
Connect CONSULT-II or GST and select “DATA MONITOR” mode.
3.
Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
3.
CHECK REAR WINDOW DEFOGGER FUNCTION
1.
Start engine.
2.
Turn ON the rear window defogger switch.
3.
Check the rear windshield. Is the rear windshield heated up?
Yes or No
Yes
>> GO TO 4.
No
>> Check rear window defogger circuit. Refer to
4.
CHECK REAR WINDOW DEFOGGER INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1.
Stop engine.
2.
Disconnect rear window defogger and door mirror defogger relay.
3.
Disconnect combination meter harness connector.
4.
Check harness continuity between rear window defogger and door mirror defogger relay terminals 5, 7
and combination meter terminal 25.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
Condition
Indication
Rear window defogger switch: ON
ON
Rear window defogger switch: OFF
OFF
PBIB0103E
Condition
Indication
Lighting switch: ON at 2nd position
ON
Lighting switch: OFF
OFF
PBIB0103E
Continuity should exist.
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