Continuing to calculate data of several sensor despite turning ignition OFF, when ignition turns ON, this enables PCM to be easy using calculated data.
If abnormal counterdown is detected for a calibratable time, PCM sets P2610. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.
ITEM | Detecting Condition | Possible Cause | |
DTC Strategy | Case 1 | ● Compares the time elapsed recorded by the LPC(Low Power Counter) against that recorded by the test timer | ● PCM |
Case 2 | ● Checks for abnormal resets of the LPC | ||
Enable Condition | Case 1 | ● Engine running 〉 10sec. ● Battery voltage 〉 8V | |
Case 2 | ● No Memory Failure Occurred | ||
Threshold | Case 1 | ● The difference between the counter the LPC and the calibration the test timer clocks up ＞ 20sec. | |
Case 2 | ● The LPC is reset to zero abnormally | ||
Diagnosis Time | ● - | ||
MIL On Condition | ● 2 Driving Cycles | ||
Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
▶ Substitute with a known-good PCM and check for proper operation. If the problem is corrected,replace PCM and then go to "Verification of Vehicle Repair" procedure.
There is a memory reset function on scantool that can erase optional parts automaticallydetected and memorized by PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others
After a repair, it is essential to verify that the fault has been corrected.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
Press F4(DTAL) and 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"?
▶ System performing to specification at this time. Clear the DTC.
▶ Go to the applicable troubleshooting procedure.
