Lotus 2004 ELISE Service Notes page 174

Lotus Service Notes
Throttle Actuator Control Motor Circuit/Open
Description
The throttle actuator stepper motor operates on 12 volts.
Monitor: Continuous
Enable Criteria: None
Disable Criteria: None
Potential failure modes:
#Throttle actuator control motor open circuit
Throttle Actuator Control Motor Circuit/Low
Monitor: Continuous
Enable Criteria: None
Disable Criteria: None
Potential failure modes:
# Throttle actuator control motor short to ground
Throttle Actuator Control Motor Circuit/High
Monitor: Continuous
Enable Criteria: None
Disable Criteria: None
Potential failure modes:
# Throttle actuator control motor short to supply voltage
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.
sn_emp_cyclone.indd 51
Section EMP
P2100
P2102
P2103
P2104
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