Operation CHARM: Car repair manuals for everyone.

Testing Requirements



1. Fully charged battery (at least 12 V DC).
2. Adequate fuel quality and quantity.
3. Fuel pump, fuel pressure, and fuel injection systems in good working order.
4. Ambient temperature approximately 20°C (68°F); (significant temperature change will affect the measured values).
5. Engine in good mechanical condition (good compression, valve clearances set, etc.)
6. Starter must be in good condition.

IMPORTANT: Carefully read "PRECAUTIONS" section before working on TCI or DME systems.