ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-137
Troubleshooting
Step Action Yes No
1Was “Engine and Emission Control System
Check” performed?
Go to Step 2. Go to “Engine and Emis-
sion Control System
Check”.
2 Signal circuit check
1) Disconnect connectors from ECM with igni-
tion switch turned OFF.
2) Remove ECM from vehicle body and then
connect connectors to ECM.
3) Check for voltage at terminal “E22-35”,
under the following condition.
While engine cranking: 6 – 14 V
After starting engine: 0 – 1 V
Is voltage as specified?
Poor “E22-35” connection
or intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection” in Section 0A.
If wire and connections
are OK, substitute a
known-good ECM and
recheck.
“BLK/YEL” wire or “BLK/
RED” wire circuit open.
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