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DTC Troubleshooting

DIAGNOSIS PROCEDURE

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2 
  1. Check for voltage at terminal "C46-27" of ECM connector connected, under the following condition.

Engine starter signal specification 
After starting engine: 0 - 1 V 
Is voltage as specified? 		 Faulty starting motor. If starting motor is OK, substitute a known-good ECM and recheck. "BLK/YEL" circuit shorted to other circuit.
If "BLK/YEL" circuit is OK, substitute a known-good ECM and recheck.
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