- Replace the CMP sensor.
If the problem found, substitute a known-good ECM and recheck.
If symptom/indication goes away, replace the original ECM. 
| NOTICE |
The battery power supply short circuit to 5 V power supply damages the ECM.
Diesel Engine Management System
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If the problem found, substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM.
The battery power supply short circuit to 5 V power supply damages the ECM. | |