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DTC P0202 Injector 2 Circuit Fault: Troubleshooting

TROUBLESHOOTING CHART

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD II) System Check.
Was the check performed?
- Go to Step 2 Go to "ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK :"
2 Will the engine start? - Go to Step 3 Go to "ENGINE CRANKS BUT WILL NOT RUN :"
3
  1. Install a scan tool to the Data Link Connector (DLC).
  2. Turn the ignition ON, with the engine OFF.
  3. Clear the Diagnostic Trouble Codes (DTCs) using a scan tool.
  4. Start the engine and idle for one minute.

Does DTC P0202 reset?
- Go to Step 5 Go to Step 4
4
  1. Turn the ignition ON, with the engine OFF.
  2. Review the Freeze Frame data and note the parameters.
  3. Operate the vehicle within the Freeze Frame conditions as noted.

Does DTC P0202 reset?
- Go to Step 5 Go to "DIAGNOSTIC AIDS :"
5
  1. Turn the ignition OFF.
  2. Disconnect the Engine Control Module (ECM) connector for injector 2.
  3. Turn the ignition ON, with the engine OFF.
  4. With a test light connected to ground, probe the driver circuit, terminal M22.

Does the test light illuminate?
- Go to Step 7 Go to Step 6
6 Repair the short to ground or open in the injector driver circuit.
Is the repair complete?
- Go to Step 10 -
7
  1. Disconnect the injector 2 wiring connection.
  2. With a test light connected to ground, probe the driver circuit, terminal 1.

Does the test light illuminate?
- Go to Step 8 Go to Step 9
8 Repair the short to voltage in the injector driver circuit.
Is the repair complete?
- Go to Step 10 -
9
  1. Turn the ignition OFF.
  2. Replace the ECM.

Is the repair complete?
- Go to Step 10 -
10
  1. Using the scan tool, clear the 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 has run and passed?
- Go to Step 11 Go to Step 2
11 Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?
- Go to APPLICABLE DTC TABLE  System OK