Subaru Legacy IV (2008 year). Service manual — part 440
GD(H4DOTC)-210
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EA: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)
(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 6 V
Electronic throttle control relay output
OFF
EN-01868
(2)
(3)
(1)
(4)
(5)
12V
12V
GD(H4DOTC)-211
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: 600 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: 400 ms
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
t 5 V
Judgement Value
Malfunction Criteria
Threshold Value
Motor power voltage
< 5 V
GD(H4DOTC)-212
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
EB: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.
(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
EN-01869
(1)
(2)
(3)
(4)
GD(H4DOTC)-213
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: 8 ms — 80 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: 8 ms
Judgement Value
Malfunction Criteria
Threshold Value
Throttle sensor opening angle at full
close point learning
< 10.127 °
or
> 19.872 °
or
Throttle opening angle when the ignition
switch is ON – Throttle minimum stop
position
< 1.683 °
Judgement Value
Malfunction Criteria
Threshold Value
Throttle sensor opening angle at full
close point learning
t 10.127 °
and
d 19.872 °
Throttle opening angle when the ignition
switch is ON – Throttle minimum stop
position
t 1.683 °
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