Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
  NOTE:
  Diagnose and repair any system voltage DTCs before continuing with this test.
2. 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 CONDITION .
ENGINE OIL TEMPERATURE SENSOR
1. Turn the ignition off.
2. Disconnect the EOT Sensor harness connector.
3. Turn the ignition on.
4. With the scan tool, read Engine Oil Temp voltage.
  NOTE:
  The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the connector disconnected.
  
  Does the scan tool display the voltage as described above?
  
  Yes
  - Verify that there is good pin to terminal contact in the Engine Oil Temperature Sensor and Powertrain Control Module connectors. Replace the Engine Oil Temperature Sensor if no problems were found with the connectors. Refer to SENSOR, OIL TEMPERATURE, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (G24) EOT SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Check for continuity between ground and the (G24) EOT Signal circuit at the EOT Sensor harness connector.
  Is there continuity between ground and the (G24) EOT Signal circuit?
  
  Yes
  - Repair the (G24) EOT Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (G24) EOT SIGNAL CIRCUIT FOR A SHORT TO THE (K915) SENSOR GROUND CIRCUIT
1. Check for continuity between the (G24) EOT Signal circuit and the (K915) Sensor Ground circuit in the EOT Sensor harness connector.
  Is there continuity between the (G24) EOT Signal circuit and the (K915) Sensor Ground circuit?
  
  Yes
  - Repair the short to between the (G24) EOT Signal circuit and the (G24) EOT Signal (K915) Sensor Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
POWERTRAIN CONTROL MODULE (PCM)
1. Using the appropriate SYSTEM WIRING DIAGRAM/SCHEMATIC as a guide, inspect the wiring and connectors between the Engine Oil Temperature Sensor and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Sensor and Control Module connectors.
4. Perform any Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .