Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 375

GD(H4DOTC)-252

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

Judge as OK and clear the NG when the malfunction criteria below are met.

Time Needed for Diagnosis:

• Difference between target opening angle and actual opening angle:

• NG judgment: See 

Details of Judgment time

• OK judgment: 2000 ms

• Output duty to drive circuit: 2000 ms

Details of Judgment Value

Models without SI-DRIVE

Judgment Value

Malfunction Criteria

Threshold Value

Difference between target opening angle and actual opening angle

Within OK range of 

Details of Judgment value

Output duty to drive circuit

< 95 %

(X1) 6.915 °

(X2) 11.565 °

(X3) 15.785 °

(X4) 21.285 °

(X5) 29.965 °

 

 

 

 

 

 

 

 

(Y1) 4.65 °

(Y2) 4.22 °

(Y3) 5.5 °

(Y4) 8.68 °

(Y5) 25 °

 

 

EN-08017

0

(Y5)

(Y4)
(Y3)
(Y1)

0

(X1)

(X2)

(X3)

(X5)

(NG area)

(X4)

(Y2)

(OK area)

Target throttle opening angle ( )

Difference between
target opening angle
and
actual opening angle ( )

GD(H4DOTC)-253

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

Models with SI-DRIVE

Details of Judgment time

Models without SI-DRIVE

(X1) 6.15 °

(X2) 9.65 °

(X3) 14.65 °

(X4) 26.65 °

 

 

 

 

 

 

 

 

 

 

(Y1) 3.5 °

(Y2) 5 °

(Y3) 12 °

(Y4) 25 °

 

 

 

 

(X1) 8.049999237 °

(X2) 9.5 °

(X3) 14.5 °

(X4) 23.5 °

 

 

 

 

 

 

 

 

 

 

(Y1) 1000 ms

(Y2) 400 ms

(Y3) 304 ms

(Y4) 248 ms

 

 

 

 

EN-08055

0

(Y4)

(Y3)

(Y2)
(Y1)

0

(X1)

(X2)

(X3)

(NG area)

(X4)

(OK area)

Target throttle opening angle ( )

Difference between
target opening  angle
and
actual opening angle ( )

EN-08018

0

(Y1)

(Y2)

(Y3)

0

(X1)

(X2)

(X3)

(X4)

(Y4)

Throttle position sensor 1 opening angle (˚)

Judgment time
(milliseconds)

GD(H4DOTC)-254

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

Models with SI-DRIVE

NOTE:

Judgment time when actual opening angle ≤ target opening angle is always 1000 milliseconds.

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

(X1) 5.5 °

(X2) 9 °

(X3) 13 °

(X4) 22 °

 

 

 

 

 

 

 

 

 

 

(Y1) 1000 ms

(Y2) 400 ms

(Y3) 300 ms

(Y4) 250 ms

 

 

 

 

EN-08056

0

(Y1)

(Y2)

(Y3)

0

(X1)

(X2)

(X3)

(X4)

(Y4)

Throttle position sensor 1 opening angle (˚)

Judgment time
(milliseconds)

GD(H4DOTC)-255

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

EZ:DTC P2122 THROTTLE/PEDAL POSITION SENSOR/SWITCH “D” CIRCUIT 

LOW INPUT

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of accelerator pedal position sensor 1.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Engine control module (ECM)

(3)

Accelerator pedal position sensor 
2 signal

(4)

Accelerator pedal position sensor

(2)

Accelerator pedal position sensor 
1 signal

 

 

 

 

Secondary Parameters

Enable Conditions

Ignition switch

ON

Battery voltage

≥ 6 V

EN-01861

(2)

(3)

(4)

(1)