Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

ACTIVE DTC
NOTE:
If any 5 Volt supply DTCs are present, repair those DTCs before proceeding.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2.
  No
  - Refer to STANDARD PROCEDURE and perform the INTERMITTENT CONDITION diagnostic procedure.
(K373) EXHAUST PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Exhaust Pressure Sensor harness connector.
3. Disconnect the PCM C2 harness connector.
4. Turn the ignition on.
5. Measure the voltage on the (K373) Exhaust Pressure Sensor Signal circuit at the Exhaust Pressure Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (K373) Exhaust Pressure Sensor Signal circuit for a short to voltage.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
  No
  - Go To 3.
(K900) SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Measure the resistance of the (K900) Sensor Ground circuit between the Exhaust Pressure Sensor harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (K900) Sensor Ground circuit for an open or high resistance.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
EXHAUST PRESSURE SENSOR
1. Reconnect the PCM C2 harness connector.
2. Turn the ignition on.
3. While monitoring the scan tool, connect a jumper across the (K373) Exhaust Pressure Sensor Signal circuit and the (K900) Sensor Ground circuit at the Exhaust Pressure Sensor harness connector.
  Did the scan tool display DTC P0472 active?
  
  Yes
  - Replace the Exhaust Pressure Sensor in accordance with the Service Information. Refer to SENSOR, DIFFERENTIAL PRESSURE, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
  No
  - Replace the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.