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Download Lotus Service Notes Section EMR
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Lotus Service Notes Section EMR Throttle Actuator Control System – Forced Idle P2104 Throttle actuator control system – forced idle Description If a problem is detected which could result in faster engine speed than commanded by the pedal, the actuator is switched out, allowing the throttle valve to default to a 6% mechanically sprung setting. This provides a fast idle speed which may be used to effect a 'limp home' mechanism. Monitor: • Continuous Enable Criteria: • Engine running Disable Criteria: • None Potential failure modes: • Electronic throttle fault Note: This code indicates action taken by the ECU, and will always be accompanied by another code which has caused this action. Throttle Actuator Control System – Forced Engine Shutdown P2105 Throttle actuator control system – forced engine shutdown Description If a problem is detected which could result in engine speed runaway, or if sufficient control of engine speed is lost, the ECU switches off the fuel injectors in order to stop the engine. Monitor: • Continuous Enable Criteria: • Engine running Disable Criteria: • None Potential failure modes: • Electronic throttle fault Note: This code indicates action taken by the ECU, and will always be accompanied by another code which has caused this action. Page 71
