Subaru Legacy IV (2008 year). 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