Electronic Power Control (EPC) Warning Lamp, Checking

Electronic Power Control (EPC) Warning Lamp, Checking

- Switch on ignition:
The EPC warning lamp must light-up.

If the EPC warning lamp does not light-up with ignition switched on:
- Check EPC lamp wiring / EPC lamp bulb using wiring diagram.

If OK:
- Check instrument cluster / ECM, and replace if necessary.
- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. Refer to "DTC Memory, Checking And Erasing" under "Computers and Control Systems/Testing and Inspection/Procedures/Displaying, Reading and Erasing Trouble Codes/With Manufacturers Scan Tool/", Testing and Inspection
- Read-out the readiness code. If the DTC memory has been erased or the engine control module was disconnected from permanent positive, the readiness code must be generated again.
Refer to "Displaying Readiness Code" under "Computers and Control Systems/Testing and Inspection/Procedures/Monitors Trips and/or Drive Cycle/", Testing and Inspection
Refer to "Generating Readiness Code" under "Computers and Control Systems/Testing and Inspection/Procedures/Monitors Trips and/or Drive Cycle/", Testing and Inspection

If the EPC warning lamp lights-up with ignition switched on, continue check as follows:
- Start engine and run at idle speed:
The EPC warning lamp must go out after a few seconds.

If the EPC warning lamp does not go out:
- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. Refer to "DTC Memory, Checking And Erasing" under "Computers and Control Systems/Testing and Inspection/Procedures/Displaying, Reading and Erasing Trouble Codes/With Manufacturers Scan Tool/", Testing and Inspection

If no DTC is stored:
- Check EPC lamp wiring using wiring diagram.

If OK:
- Check instrument cluster / ECM, and replace if necessary.
- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. Refer to "DTC Memory, Checking And Erasing" under "Computers and Control Systems/Testing and Inspection/Procedures/Displaying, Reading and Erasing Trouble Codes/With Manufacturers Scan Tool/", Testing and Inspection
- Read-out the readiness code. If the DTC memory has been erased or the engine control module was disconnected from permanent positive, the readiness code must be generated again.
Refer to "Displaying Readiness Code" under "Computers and Control Systems/Testing and Inspection/Procedures/Monitors Trips and/or Drive Cycle/", Testing and Inspection
Refer to "Generating Readiness Code" under "Computers and Control Systems/Testing and Inspection/Procedures/Monitors Trips and/or Drive Cycle/", Testing and Inspection