Subaru Legacy IV (2008 year). Service manual — part 439
GD(H4DOTC)-206
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DY:DTC P2101 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT RANGE/
PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Judge as NG when the motor current becomes large or drive circuit is heated.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(4)
Drive circuit
(6)
Electronic throttle control relay
(2)
Detecting circuit
(5)
Temperature detection circuit
(7)
Motor
(3)
Overcurrent
detection
circuit
Secondary Parameters
Enable Conditions
Under control of electronic throttle control ON
CPU communication line sub
o main
normal judgment
Normal
EN-01867
(3)
(2)
(5)
(2)
(4)
(1)
(6)
(7)
12V
12V
GD(H4DOTC)-207
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: 500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Time Needed for Diagnosis: 2000 ms
Judgement Value
Malfunction Criteria
Threshold Value
Motor current
> 8 A
or
Drive circuit inner temperature
> 175°C (347°F)
Judgement Value
Malfunction Criteria
Threshold Value
Motor current
d 8 A
Drive circuit inner temperature
d 175°C (347°F)
GD(H4DOTC)-208
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DZ: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
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
(1)
Engine control module (ECM)
(3)
Drive circuit
(5)
Motor
(2)
Voltage detection circuit
(4)
Electronic throttle control relay
Secondary Parameters
Enable Conditions
Battery voltage
t 11 V
Electronic throttle control relay output
ON
EN-01868
(2)
(3)
(1)
(4)
(5)
12V
12V
GD(H4DOTC)-209
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Time Needed for Diagnosis: 400 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Time Needed for Diagnosis: 2000 ms
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
d 5 V
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
> 5 V
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