Diagnostic Test

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

CHECK FUEL
1. Check the quality of the fuel.
  Is the quality incorrect?
  
  Yes
  - Empty the tank and fill it with the correct quality fuel.
  No
  - Go To 2
THROTTLE BODY CHECK
1. Check for dirt on the throttle of Throttle Body.
  Is there dirt present?
  
  Yes
  - Remove the dirt and restore correct operation.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
AIR SUPPLY SYSTEM CHECK
1. Check for disconnections in the air supply system.
  Are there any disconnections?
  
  Yes
  - Repair the disconnections as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK ENGINE OIL DECAY USING SCAN TOOL
1. Connect the scan tool to the PCM-1 and check that the "Engine oil decay" parameter is not lower than 20%.
  Is the Engine oil decay parameter lower than 20%
  
  Yes
  - Change the engine oil.
  No
  - Go To 5
CHECK FUEL RAIL PRESSURE SENSOR USING SCAN TOOL
1. Check that the Fuel Rail Pressure Sensor is working correctly.
  Is the operation of the Fuel Rail Pressure Sensor incorrect?
  
  Yes
  - Replace the Fuel Rail Pressure Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
REPLACE BANK 1 MAP SENSOR AND RETEST FOR DTC
1. Replace the Bank 1 MAP Sensor in accordance with the Service Information.
2. Reconnect the PCM-1 C2 harness connector.
3. Reconnect the Bank 1 MAP harness connector.
4. Using the recorded Freeze Frame Data and the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read PCM-1 DTCs.
  Is the DTC active or pending?
  
  Yes
  - Go To 7
  No
  - Repair is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK RELATED PCM AND COMPONENT CONNECTIONS
1. Perform any Service Bulletins that apply.
2. Disconnect all PCM-1 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-1 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 1 (PCM-1) 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
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  - Test complete.