Subaru Legacy IV (2008 year). Service manual — part 197

GD(H4SO)-90

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

BA:DTC P0336 CRANKSHAFT POSITION SENSOR “A” CIRCUIT RANGE/

PERFORMANCE

1. OUTLINE OF DIAGNOSIS

Detect for faults in crankshaft position sensor output properties.
Judge as NG when there is a problem in the number of crankshaft signals for every revolution.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

(A)

Cam signal

(B)

Crankshaft signal

(1)

Crankshaft position sensor

(2)

Crank sprocket

(3)

Crankshaft half-turn

Secondary Parameters

Enable Conditions

Battery voltage

t 8 V

Engine speed

< 4000 rpm

(A)

(B)

10 CA

#1BTDC10 CA

#3BTDC10 CA

#2BTDC10 CA

#4BTDC10 CA

#1BTDC10 CA

30 CA 30 CA

EN-05538

(1)

(2)

(3)

EN-05539

GD(H4SO)-91

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously under 3000 rpm engine speed.

5. DIAGNOSTIC METHOD

• Abnormality Judgement

Judge as NG when the following conditions are established.

Time Needed for Diagnosis: 10 engine revs.
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.

• 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: Less than 1 second

Judgement Value

Malfunction Criteria

Threshold Value

Cylinder number identification

Completed

Amount of crank sensor signal during 1 rev. Not = 30

Judgement Value

Malfunction Criteria

Threshold Value

Cylinder number identification

Completed

Amount of crank sensor signal during 1 rev. = 30

GD(H4SO)-92

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

BB:DTC P0340 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 1 OR SINGLE

SENSOR)

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of the camshaft position sensor.
Judge as NG when the number of camshaft signals remains abnormal.

2. COMPONENT DESCRIPTION

3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(A)

Camshaft signal

(B)

Crankshaft signal

Secondary Parameters

Enable Conditions

None

(A)

(B)

Number of camshaft signal = 2 is normal at two engine revolution.

10 CA

#2BTDC10 CA

#4BTDC10 CA

30 CA 30 CA

#1BTDC10 CA

#3BTDC10 CA

#1BTDC10 CA

EN-05541

GD(H4SO)-93

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: Engine two revolutions × 4 time(s)
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: Two engine revolutions

Judgement Value

Malfunction Criteria

Threshold Value

Battery voltage

t 8 V

Amount of camshaft sensor signal during
2 revs.

Not = 2

Judgement Value

Malfunction Criteria

Threshold Value

Voltage

t 8 V

Amount of camshaft sensor signal during
2 revs.

= 2