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Lotus Service Notes
Section EMP Page 55 Throttle Actuator Control Module Performance P2108 Monitor: Continuous Enable Criteria: Engine running Disable Criteria: None Potential failure modes: # ECU internal failure # Short circuit to throttle actuator Pedal Position Sensor 'D' Circuit Low P2122 Description Two potentiometers are built into the throttle pedal unit in order to provide a throttle demand signal to the ECU. Note that the potentiometers operate on 5 volts. Enable Criteria: None Disable Criteria: None Potential failure modes: # Signal short circuit (< 0.283 V) # Reference voltage open circuit # Reference voltage short to ground # Sensor failure Notes: A maximum throttle opening of 15% may be imposed due to this single code. In the case of multiple codes, a mechanically sprung 7% opening may be applied. Pedal Position Sensor 'D' Circuit High P2123 Enable Criteria: None Disable Criteria: None Potential failure modes: # Signal open circuit (> 4.487 V) # Reference voltage open circuit # Reference voltage short to ground # Sensor failure Notes: A maximum throttle opening of 15% may be imposed due to this single code. In the case of multiple codes, a mechanically sprung 7% opening may be applied. |