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11 DETECT MALFUNCTIONING PART
Check the following.
I Joint connector-12
I Harness for open or short between ECM relay and 15A fuse
© Repair open circuit or short to ground or short to power in harness or connectors.
12 CHECK HARNESS CONTINUITY BETWEEN ECM RELAY AND ECM FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals and ECM relay terminals as follows.
Refer to WIRING DIAGRAM.
MTBL1139
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 14.
NG © GO TO 13.
13 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors E15, F18
I Harness for open or short between ECM and ECM relay
© Repair open circuit or short to ground or short to power in harness or connectors.
14 CHECK 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.
SEF296X
OK or NG
OK © GO TO 15.
NG © Replace ECM relay.
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Main Power Supply and Ground Circuit (Cont’d)
EC-162
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