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ELECTRICAL LOAD SIGNAL
EC-941
[QR (WITHOUT EURO-OBD)]
C
D
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A
EC
10. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors E106, M14
● Harness for open and short between ECM and daytime light relay LH or HID relay LH
>> Repair open circuit or short to ground or short to power in harness or connectors.
11. 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 12.
No >> Refer to GW-17, "
REAR WINDOW DEFOGGER" .
12. CHECK REAR WINDOW DEFOGGER INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect rear window defogger relay.
4. Check harness continuity between rear window defogger relay 3 (models without door mirror defogger), 5
(models with door mirror defogger) and ECM terminal 93.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors B1, M17
● Harness for open and short between rear window defogger relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK HEATER FAN CONTROL FUNCTION
1. Start engine.
2. Turn ON the fan control switch.
3. Check the blower fan motor.
Does the blower fan motor activate?
Yes or No
Yes >> GO TO 15.
No >> Refer to ATC-33, "
TROUBLE DIAGNOSIS" .
Continuity should exist.
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