Diagnostic Test

1. Check for any applicable Service Bulletins or Flash updates related to the DTC.

   Are there any applicable Service Bulletins or Flash updates?

   Yes 

   • Perform the applicable repair.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  2

1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  3

No 

• Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .

1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Using the (special tool #2064100080, Kit, Electrical Test Lead) connected to the appropriate terminals in the PCM harness connector, measure the total circuit resistance of the Fuel Injector 1 circuitry.
   NOTE:

   The resistance of a coil winding will typically increase as the temperature of the windings increase. If measuring the resistance on a hot engine or Fuel Injector, it is best to compare the resistance value of the suspect injector to resistance value of the other Fuel Injector circuits.

   NOTE:

   The total resistance should be between approximately 1.5 and 2.0 Ohms at ambient temperature, or within 10% of the other known good injectors on the engine.

   Is the total resistance of the Fuel Injector 1 circuitry within the specifications listed above?

   Yes 

   • Go To  7

   No 

   • Go To  4

1. Turn the ignition off.
2. Check the Fuel Injector harness connector for proper connection at the Fuel Injector.
3. Verify that the connector is completely plugged in and properly locked prior to disconnecting.
4. Disconnect the Fuel Injector harness connector and check for any pushed out, damaged or spread terminals.

   Were any issues found with the connector or terminals?

   Yes 

   • Repair the damaged terminal or properly connect and lock the Fuel Injector harness connector and retest for DTCs.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  5

1. Measure the resistance of the Fuel Injector 1 (K11) High Side Control circuit between the Fuel Injector 1 harness connector and the PCM C2 harness connector.

   Is the resistance below 0.5 Ohms?

   Yes 

   • Go To  6

   No 

   • Repair the Fuel Injector 1 (K11) High Side Control circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Measure the resistance of the Fuel Injector 1 (K611) Low Side Control circuit between the Fuel Injector 1 harness connector and the PCM C2 harness connector.

   Is the resistance below 0.5 Ohms?

   Yes 

   • Replace the Fuel Injector in accordance with the Service Information. Refer to INJECTOR(S), FUEL, REMOVAL AND INSTALLATION .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Repair the Fuel Injector 1 (K611) Low Side Control circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Perform any Service Bulletins that apply.
2. Disconnect all PCM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
   • Proper connector installation.
   • Damaged connector locks.
   • Corrosion.
   • Other signs of water intrusion.
   • Weather seal damage (if equipped).
   • Bent terminals.
   • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
   • Terminals that have been pushed back into the connector cavity.
   • Check for spread terminals and verify proper terminal tension.

   Repair any conditions that are found.

6. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.

    Did the DTC return?

    Yes 

    • Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
    • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

    No 

    • The wiring or poor connection problem has been repaired.
    • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .