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Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. Using the scan tool, erase PCM DTCs.
    3. Perform several ignition cycles, turning the ignition off for at least 10 seconds between each ignition cycle.
    4. With the scan tool, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. CHECK FOR OTHER DTCS 
    1. Refer to the recorded DTCs.

      Are there any 5-Volt Supply DTCs active or pending?

      Yes 

      No 

      • Go To  3
  3. CHECK THE (K22) THROTTLE POSITION SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    NOTE:

    There is an in-line harness connector that will allow easier access to these circuits for testing.

    1. Turn the ignition off.
    2. Disconnect the Throttle Valve Actuator harness connector.
    3. Disconnect the PCM C2 harness connector.
    4. Check for continuity between ground and the (K22) Throttle Position Signal circuit at the Throttle Valve Actuator harness connector.

      Is there continuity between ground and the (K22) Throttle Position Signal circuit?

      Yes 

      • Repair the (K22) Throttle Position Signal circuit for a short to ground.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK FOR THE (K22) THROTTLE POSITION SIGNAL CIRCUIT SHORTED TO THE (K922) SENSOR GROUND CIRCUIT 
    1. Check for continuity between the (K22) Throttle Position Signal circuit and the (K922) Sensor Ground circuit at the Throttle Valve Actuator harness connector.

      Is there continuity between the (K22) Throttle Position Signal circuit and the (K922) Sensor Ground circuit?

      Yes 

      • Repair the short between the (K22) Throttle Position Signal circuit and the (K922) Sensor Ground circuit
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE (K22) THROTTLE POSITION SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K22) Throttle Position Signal circuit between the Throttle Valve Actuator harness connector and the PCM C2 harness connector

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  6

      No 

      • Repair the (K22) Throttle Position Signal circuit for an open/high resistance.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  6. CHECK THE (K922) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K922) Sensor Ground circuit between the TV Actuator harness connector and the PCM C2 harness connector

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  7

      No 

      • Repair the (K922) Sensor Ground circuit for an open/high resistance.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  7. CHECK THE ABILITY OF THE PCM TO READ THE THROTTLE POSITION SIGNAL 
    1. Reconnect the Throttle Valve Actuator harness connector.
    2. Reconnect the PCM C2 harness connector.
    3. Turn the ignition on.
    4. With the scan tool, erase DTCs.
    5. Turn the ignition off.
    6. Disconnect the Throttle Valve Actuator harness connector.
    7. Connect a jumper between the (K22) Throttle Position Signal circuit and the (K313) 5-Volt Supply circuit at the TV Actuator harness connector.
    8. Turn the ignition on.
    9. With the scan tool, read DTCs.

      Does the scan tool display DTC P02E9-00?

      Yes 

      No 

      • Go To  8
  8. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. 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.

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

      Did the DTC return?

      Yes 

      No 

      • Repair the poor connections.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
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