Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- Turn the ignition on.
- With the scan tool, read and record DTCs and Freeze Frame data on the repair order.
Is the DTC active or pending?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- CHECK FOR HIGH RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
- Turn the ignition off.
- Disconnect the Wastegate Solenoid harness connector.
- Disconnected PCM C2 harness connector.
- Measure the resistance of the (F856) 5-Volt Supply circuit between the Wastegate Solenoid harness connector and the PCM C2 harness connector.
Is the resistance below 3.0 Ohms?
Yes
- Go To 3
No
- Repair the high resistance in the (F856) 5-Volt Supply circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- CHECK FOR HIGH RESISTANCE IN THE (K137) WASTEGATE POSITION SIGNAL CIRCUIT
- Measure the resistance of the (K137) Wastegate Position Signal circuit between the Wastegate Solenoid harness connector and the PCM C2 harness connector.
Is the resistance below 3.0 Ohms?
Yes
- Go To 4
No
- Repair the high resistance in the (K137) Wastegate Position Signal circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Measure the resistance of the (K137) Wastegate Position Signal circuit between the Wastegate Solenoid harness connector and the PCM C2 harness connector.
- CHECK FOR HIGH RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
- Measure the resistance of the (K900) Sensor Ground circuit between the Wastegate Solenoid harness connector and the PCM C2 harness connector.
Is the resistance below 3.0 Ohms?
Yes
- Replace the Turbocharger Assembly in accordance with the Service Information. Refer to TURBOCHARGER, REMOVAL AND INSTALLATION .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Repair the high resistance in the (K900) Sensor Ground circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Measure the resistance of the (K900) Sensor Ground circuit between the Wastegate Solenoid harness connector and the PCM C2 harness connector.