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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action Value (s) Yes No
1 Perform an ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK .
Is the system check complete?		 - Go to Step 2. Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK .
2
  1. Turn the ignition ON, engine OFF.
  2. Install the scan tool.
  3. Command the Purge Solenoid ON and OFF.

Does the solenoid turn ON and OFF with each command?		 - Go to Step 3. Go to Step 5.
3
  1. Turn the ignition OFF.
  2. Disconnect the Engine Control Module (ECM) connector containing the solenoid control circuit (connector 1, red).
  3. Turn the ignition ON.
  4. Using a Digital Voltmeter (DVM) on a 10 A scale, measure the current from the solenoid control circuit, at terminal A17 in the ECM harness connector to ground for 2 minutes.

Does the current draw measure less than the specified value?		 0.75 A Go to Diagnostic Aids . Go to Step 4.
4
  1. Turn the ignition OFF.
  2. Disconnect the solenoid.
  3. Using a DVM, measure resistance from the solenoid control circuit, at terminal A17 in the ECM harness connector to ground.

Does the DVM display infinite resistance?		 - Go to Step 12. Go to Step 10.
5
  1. Turn the ignition OFF.
  2. Disconnect the solenoid.
  3. Connect a test light between the terminals 2 and 1 in the solenoid harness connector.
  4. Turn the ignition ON.
  5. Using the scan tool, command the solenoid ON and OFF.

Does the test light turn ON and OFF with each command?		 - Go to Step 8. Go to Step 6.
6 With the test light connected to ground, probe the ignition feed circuit, at terminal 1 in the solenoid harness connector.
Does the test light illuminate?		 - Go to Step 7. Go to Step 11.
7
  1. Turn the ignition OFF.
  2. Reconnect the solenoid.
  3. Disconnect the ECM connector containing the solenoid control circuit.
  4. Turn the ignition ON.
  5. With a fused jumper wire connected to ground, probe the solenoid control circuit, at terminal A17 in the ECM harness.

Does the solenoid operate?		 - Go to Step 9. Go to Step 10.
8 Check the connections at the solenoid.
Is a problem found and corrected?		 - Go to Step 14. Go to Step 12.
9 Check the connections at the ECM.
Is a problem found and corrected?		 - Go to Step 14. Go to Step 13.
10 Repair the faulty solenoid control circuit.
Is the repair complete?		 - Go to Step 14. -
11 Repair the faulty solenoid ignition feed circuit.
Is the repair complete?		 - Go to Step 14. -
12 Replace the solenoid.
Is the repair complete?		 - Go to Step 14. -
13
  1. Turn the ignition OFF.
  2. Replace the ECM.

Is the repair complete?		 - Go to Step 14. -
14
  1. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  2. Start the engine and idle at normal operating temperature.
  3. Operate the vehicle within the conditions for setting this DTC as specified in the supporting text.

Does the scan tool indicate that this diagnostic ran and passed?		 - Go to Step 15. Go to Step 2.
15 Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?		 - Go to applicable DTC Table . System OK
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