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EC-506
[QR (WITH EURO-OBD)]
ELECTRICAL LOAD SIGNAL
9. CHECK HEADLAMP INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch harness connectors.
4. Check harness continuity between lighting switch terminal 9, 10 and ECM terminal 84 under the following
conditions.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 18.
NG >> GO TO 10.
10. DETECT MALFUNCTIONING PART
Check the following.
● Harness connectors E105, M13
● Diode E123
● Diode E124
● Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
11. CHECK HEADLAMP INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect HID relay LH.
4. Check harness continuity between ECM terminal 84 and HID relay LH terminal 3.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 18.
NG >> GO TO 12.
Condition Continuity
1 Should exist
2 Should not exist
PBIB1994E
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