C3 Check ECU

C3 CHECK THE ELECTRONIC CONTROL UNIT (ECU)

- Key "OFF."

- Reconnect and reassemble all components.

- Install the New Generation Star Tester.

- Key "ON." Clear codes.

- Key "OFF."

- Key "ON," pull codes.

Is System Pass Obtained?

> Yes
Repair the charging system for an intermittent over-charge condition.

> Yes
DTC B1317 is present. Replace the ECU.

A new code is present. Go to the appropriate pinpoint test. Diagnostic Trouble Code Descriptions