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EC-942
[YD (WITH EURO-OBD)]
MAIN POWER SUPPLY AND GROUND CIRCUIT
13. CHECK ECM POWER SUPPLY CIRCUIT-V
Check voltage between ECM terminal 121 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
14. DETECT MALFUNCTIONING PART
Check the following.
● 20A fuse
● Harness connectors E116, M75 (LHD models)
● Harness connectors E105, M13 (RHD models)
● Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
15. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals 1, 2, 3, 114 and body ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to power in harness or connectors.
16. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component Inspection EBS0117O
ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.
Voltage: Battery voltage
MBIB0026E
Continuity should exist.
Condition Continuity
12V direct current supply between ter-
minals 1 and 2
Yes
OFF No
PBIB0077E
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