When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.
Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.
The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by
disconnecting the battery.
DTC P2108 (40): ADVANCED DIAGNOSTICS
DTC P2108: THROTTLE ACTUATOR CONTROL MODULE PROBLEM
Fig. 256: Throttle Actuator Control Module - Communication Diagram
General Description
The electronic throttle control system controls the throttle valve opening. The system is composed of the
throttle actuator, the throttle valve, throttle position (TP) sensors A and B, the throttle actuator control
module, the throttle actuator control module relay, the accelerator pedal position (APP) sensor, and the
powertrain control module (PCM).
The APP sensor is operated via the throttle cable to determine the accelerator opening value when the driver
presses the accelerator pedal. The accelerator pedal opening value is converted to a signal in the APP sensor
and transmitted to the PCM to compute the target position. The target position signal is then transmitted to
the throttle actuator control module. The throttle actuator control module determines the throttle valve target
position according to the signal received and operates the throttle actuator to move the throttle valve to the
target position. The actual throttle valve position is determined by TP sensor A installed in the throttle body.
The CPU in the throttle actuator control module performs self-diagnosis for the ROM, the RAM, and the
A/D converter. If internal data is found to be abnormal, a malfunction is detected and the malfunction data is
transmitted to the PCM. When the PCM receives the malfunction data from the throttle actuator control
2007 Acura RL
2007 ENGINE PERFORMANCE Advanced Diagnostics - RL
me
Friday, June 05, 2009 2:32:07 PM
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