Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record the related Freeze Fame Data and clear the DTCs in the PCM.
3. Start the engine and allow it to reach normal operating temperature. Hold engine speed greater than 1000 RPM for at least one minute. The DTC will not be set unless cam phasing becomes active, which may not occur if speed never leaves idle.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result possible serious or fatal injury.
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 CONDITION .
CHECK THE (G62) OIL PUMP CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Oil Pump Solenoid harness connector.
3. Turn the ignition on.
  NOTE:
  There should no voltage present except for a brief period immediately after turning the ignition on.
4. Measure the voltage on the (G62) Oil Pump Solenoid Control circuit at the Oil Pump Solenoid harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (G62) Oil Pump Solenoid Control circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (G62) OIL PUMP SOLENOID CONTROL 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 (G62) Oil Pump Solenoid Control circuit at the oil pump solenoid harness connector.
  Is there continuity between ground and the (G62) Oil Pump Solenoid Control circuit?
  
  Yes
  - Repair the (G62) Oil Pump Solenoid Control circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (G62) OIL PUMP SOLENOID CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
CAUTION:
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.
1. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
2. Measure the resistance of the (G62) Oil Pump Solenoid Control circuit between the Oil Pump Solenoid harness connector and the GPEC Adaptor.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (G62) Oil Pump Solenoid Control circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (Z903) OIL PUMP SOLENOID GROUND CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (Z903) Oil Pump Solenoid Ground circuit at the Oil Pump Solenoid harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the (Z903) Oil Pump Solenoid ground control circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE OIL PUMP SOLENOID FOR PROPER OPERATION
1. Reconnect the PCM C2 harness connector.
2. Turn the ignition on.
3. Using a 12-volt test light connected to ground, probe the (G62) Oil Pump Solenoid Control circuit at the Oil Pump Solenoid harness connector.
  NOTE:
  The test light should be off except for a brief period immediately after turning the ignition on.
4. With the scan tool, actuate the Oil Pump Solenoid control to the ON (100%) position.
  NOTE:
  The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
  
  Is the test light illuminated and bright during the actuation and was it off when required?
  
  Yes
  - Verify that there is good pin to terminal contact in the Oil Pump Solenoid and Powertrain Control Module connectors. If no problems are found, replace the Oil Pump Solenoid in accordance with the Service Information. Refer to PUMP, ENGINE OIL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 7
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
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .