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4 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 ECM terminal 52 and rear window defogger relay terminals 5 and 7.
SEF612X
5. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 6.
NG © GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors B1, M5
I Harness connectors M46, F44
I Diode M35
I Harness for open and short between ECM and rear window defigger relay
© Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
© INSPECTION END
7 CHECK HEADLAMP FUNCTION
1. Start engine.
2. Turn the lighting switch “ON” at 1st position with high beam.
3. Check that headlamps are illuminated.
OK or NG
OK © GO TO 8.
NG © Refer to EL-34, “HEADLAMP (FOR USA)” or “EL-60, “HEADLAMP (FOR CANADA) —
DAYTIME LIGHT SYSTEM”.
ELECTRICAL LOAD SIGNAL
Diagnostic Procedure (Cont’d)
EC-640
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