Operation CHARM: Car repair manuals for everyone.

Component Tests and General Diagnostics

14.13 Engine Control Unit

14.13.1. General Description
The purpose of this diagnosis is to detect electrical faults of the engine control unit.

14.13.2. Monitoring Conditions:
Ignition key on

14.13.3. Error Symptoms:
- Error based on ECU internal software checks
- Error based on ECU internal hardware checks

14.13.3.1. Flow chart: ECU monitoring