Power Stage Check

Powerstage check

Monitoring Strategy for Actuators

General Description
The purpose of this diagnosis is to detect electrical faults as defined in OBD I requirements.

Invalid actuator output signals at power stage are regarded as circuit malfunctions shorted to BATT, GND or Open circuit.

Montitoring Conditions

See Summary Table Diagnostic Trouble Code Descriptions

Monitored components:
- Injection valves
- Canister purge valve
- Tank leakage valve
- Camshaft position actuator
- Inlet valve lift actuator
- Engine Control Unit : power supply for external sensors

Flow chart: - Monitoring strategy for actuators