4.
Read "DTC Status" parameter.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode.
Press F4(DTAL) to select DTC information from the DTCs menu.
Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
Read "DTC Status" parameter.
Is parameter displayed "History(Not Present) fault"?
History (Not Present) fault : DTC occurred but has been cleared.
Present fault : DTC is occurring at present time.
YES
▶ Fault is intermittent caused by poor contact in the sensor’s and/or the PCM’s connector, which was repaired but PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Go to "Back Up Voltage Inspection " procedure.
Ignition "OFF".
Disconnect PCM connector
Ignition "ON".
Measure voltage between terminal 3 of the PCM harness connector and chassis ground
Specification : Remain stable at battery voltage
Are circuits remaining stable at battery voltage?
YES
▶ Using a scan tool, check PCM software version and upgrade as necessary. If version is the newest one, go to "Verification of Vehicle Repair" procedure
NO
▶ If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "Verification of Vehicle Repair" procedure
