Subaru Legacy IV (2008 year). Service manual — part 220
GD(H4SO)-182
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DI: 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.
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis:
• 500 milliseconds (For NG)
• 2000 milliseconds (For OK)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(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
Judgement Value
Malfunction Criteria
Threshold Value
Motor current
d 8 A
Drive circuit inner temperature
d 175°C (347°F)
EN-01867
(3)
(2)
(5)
(2)
(4)
(1)
(6)
(7)
12V
12V
GD(H4SO)-183
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DJ: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.
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis:
• 400 milliseconds (For NG)
• 2000 milliseconds (For OK)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(1)
Engine control module (ECM)
(3)
Drive circuit
(5)
Motor
(2)
Voltage detection circuit
(4)
Electronic throttle control relay
Secondary Parameters
Enable Conditions
Electronic throttle control relay output
ON
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
t 5 V
EN-01868
(2)
(3)
(1)
(4)
(5)
12V
12V
GD(H4SO)-184
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DK:DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
1. OUTLINE OF DIAGNOSIS
Judge as NG when the electronic throttle control power is supplied even when ECM sets the electronic throt-
tle control relay to OFF.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
• When ignition switch ON
o OFF
• Ignition switch OFF
o ON (Only after clearing memory)
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis:
• 600 milliseconds (For NG)
• 400 milliseconds (For OK)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(1)
Engine control module (ECM)
(3)
Drive circuit
(5) Motor
(2)
Voltage detection circuit
(4)
Electronic throttle control relay
Secondary Parameters
Enable Conditions
Electronic throttle control relay output
OFF
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
d 5 V
EN-01868
(2)
(3)
(1)
(4)
(5)
12V
12V
GD(H4SO)-185
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
DL:DTC P2109 THROTTLE/PEDAL POSITION SENSOR “A” MINIMUM STOP
PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Judge as NG when full close point learning cannot conducted or abnormal value is detected.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Perform the diagnosis at full closed point learning.
5. DIAGNOSTIC METHOD
Judge as OK and clear the NG when the malfunction criteria below are met.
Time Needed for Diagnosis: 8 — 80 milliseconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(1)
Engine control module (ECM)
(3)
Motor
(4)
Throttle position sensor
(2)
Drive
circuit
Secondary Parameters
Enable Conditions
Ignition switch
ON
o OFF
Ignition switch (only after clear memory)
OFF
o ON
Judgement Value
Malfunction Criteria
Threshold Value
Throttle sensor opening angle at full
close point learning
10.127° or more,
19.872° or less
Throttle opening angle when the ignition
switch is ON – Throttle minimum stop
position
t 1.683°
EN-01869
(1)
(2)
(3)
(4)
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