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DTC Troubleshooting

DTC DIAGNOSTIC TROUBLESHOOTING CHART

Step Action YES NO
1  Was "Engine and Emission Control System" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  Check wire circuit 
  1. Turn OFF ignition switch.
  2. Disconnect connector from IMT vacuum solenoid valve.
  3. Check for proper connection of IMT vacuum solenoid valve connector at "BLU/BLK" and "GRY/RED" wire terminals.
  4. If OK, turn ON ignition switch and measure voltage between "BLU/BLK" wire of IMT vacuum solenoid valve connector and engine ground.

Is voltage 10 - 14 V? 		 Go to Step 3. Open in "BLU/BLK" circuit.
3  Check wire circuit 
  1. Remove ECM cover.
  2. Turn OFF ignition switch.
  3. Disconnect connectors from ECM.
  4. Check for proper connection of ECM connector at "E61-21" terminal.
  5. If OK, measure resistance between "E61- 21" terminal of ECM connector and vehicle body ground.

Is resistance infinity? 		 Go to Step 4. "GRY/RED" circuit shorted to ground.
4  Check wire circuit 
  1. Turn ON ignition switch.
  2. Measure voltage "E61-21" terminal of ECM connector and vehicle body ground.

Is voltage 0 V? 		 Go to Step 5. "GRY/RED" circuit shorted to power supply line.
5  Check wire circuit 
  1. Turn OFF ignition switch.
  2. Connect connectors from ECM.
  3. Turn ON ignition switch.
  4. Measure voltage "E61-21" terminal of ECM connector and vehicle body ground.

Is voltage 10 - 14 V? 		 Go to Step 6. Open in "GRY/RED" circuit.
6  Check IMT vacuum solenoid valve performance 
  1. Check IMT vacuum solenoid valve referring to IMT VACUUM TANK ASSEMBLY INSPECTION .

Is check result satisfactory? 		 Substitute a known-good ECM and recheck. Replace vacuum tank assembly.
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