Chart A-1 (1.6L Turbo) - No Check Engine Light: Notes
There should always be a steady CHECK ENGINE light when ignition is on and engine stopped. Battery voltage is supplied to bulb through C7 (10-amp) fuse. The Electronic Control Module (ECM) turns the light on by providing a ground path through Red wire.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- Battery voltage terminals B1 and C16 are protected by a fusible link, located in relay/fuse box under the hood, near the battery.
- If voltage is present at terminals B1 and C16, check for faulty ECM grounds or faulty ECM.
- Using a test light connected to 12 volts, probe each system ground circuits to ensure a good ground is present.