The Malfunction Indicator Lamp (MIL), which is located in the instrument cluster, comes on to notify the driver that there may be a problem with the vehicle and that service is needed. Immediately after the ignition switch turns on, the malfunction indicate that the MIL operates normally and goes off after starting.
ECM sets DTC P0650 if the ECM detects that the MIL control line is open or short circuit to ground or battery line.
ITEM | DETECTING CONDITION | POSSIBLE CAUSE |
DTC Strategy | ● Driver stage check | ● Open or short between MIL and ECM ● Contact resistance in connectors ● Burned out MIL bulb |
Enable Conditions | ● Battery voltage 〉10V | |
Threshold Value | ● Open, short to ground or battery | |
Diagnostic Time | ● 20 sec. |
Ignition "OFF".
Disconnect ECM connector
Ignition "ON" & Engine "OFF"
Using a suitable wire, jumper the terminal 20 of ECM harness connector to chassis ground.
Is MIL bulb illuminated?
▶ Go to next step.
▶ Remove instrument cluster and inspect MIL bulb. If it is burned out, replace bulb. If bulb is okay, locate source of open between bulb and (20/C30-4) or between bulb and Meter Fuse. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Remove wire from ECM harness connector.
Does MIL bulb go out?
▶ Thoroughly check for loose, bent, or corroded terminals in MIL circuit (including circuit board). Repair as necessary and go to "Verification of Vehicle Repair" procedure.
▶ Check for source of short to GND between bulb and ECM(20/C30-4). Repair as necessary. and go to "Verification of Vehicle Repair" procedure.
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.
