Bosch M797 Pinout Better |best| -

| Pin Function | Circuit Type | Testing Procedure | | :--- | :--- | :--- | | | High Impedance Driver | Check for Vbatt on supply side. ECU drives the ground. Use noid light for pulse check. | | Ignition Coil | Ignition Driver | Check for Vbatt supply. ECU switches ground to trigger spark. | | Idle Air Control (IAC) | Stepper/PWM | Varies by model. Check for continuity to the IAC

This ECU family is incredibly versatile and can be found in: bosch m797 pinout better

A superior pinout schematic must answer three questions: What voltage? What logic? What sequence? | Pin Function | Circuit Type | Testing