Subaru 2009 IMPREZA Service Manual page 1796

Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DX:DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW
1. OUTLINE OF DIAGNOSIS
Judge as NG when the electronic throttle control power is not supplied even when ECM sets the electronic
throttle control relay to ON.
2. COMPONENT DESCRIPTION
(1)
(1) Engine control module (ECM)
(2) Voltage detection circuit
3. ENABLE CONDITION
Secondary Parameters
Electronic throttle control relay output
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Judgement Value
Malfunction Criteria
Motor power voltage
Time Needed for Diagnosis:
• 400 milliseconds (For NG)
• 2000 milliseconds (For OK)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(2)
(3)
(3) Drive circuit
(4) Electronic throttle control relay
Enable Condition
ON
Threshold Value
5 V
GD(H4DOTC)-208
12V 12V
(4)
(5) Motor
(5)
EN-01868