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)