Subaru Legacy IV (2008 year). Manual - part 410

GD(H4DOTC)-90

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

AZ: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)

Camshaft signal (RH)

(B)

Camshaft signal (LH)

(C)

Crankshaft signal

(1)

Crankshaft position sensor

(2)

Crank sprocket

(3)

Crankshaft half-turn

Secondary Parameters

Enable Conditions

Battery voltage

t 8 V

Engine speed

< 3000 rpm

EN-03269

(A)

(C)

30 CA 30 CA

(B)

#1BTDC10 CA

#3BTDC10 CA

#2BTDC10 CA

#4BTDC10 CA

#1BTDC10 CA

50 CA

50 CA

50 CA

50 CA

50 CA

50 CA

10 CA

EN-01780

(1)

(2)

(3)

GD(H4DOTC)-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(H4DOTC)-92

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

BA: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 (RH)

(C)

Crankshaft signal

(D)

Number of camshaft position sig-
nals = When normal, there will be 
3 cam signals for every 2 engine 
revolutions.

(B)

Camshaft signal (LH)

 

 

Secondary Parameters

Enable Conditions

Battery voltage

t 8 V

EN-01853

(A)

(C)

10 CA

30 CA 30 CA

(B)

#1BTDC10 CA

#3BTDC10 CA

#2BTDC10 CA

#4BTDC10 CA

#1BTDC10 CA

50 CA

50 CA

50 CA

50 CA

50 CA

50 CA

 (D)

GD(H4DOTC)-93

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

• Abnormality Judgement 1

Judge as NG when the condition where the number of camshaft position sensor signals are less than 3
time(s) during 2 engine revs. continues.

Time Needed for Diagnosis: Two engine revolutions × 50 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

• Normality Judgement 1

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

Time Needed for Diagnosis: Two engine revolutions

• Abnormality Judgement 2

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 3000 ms

• Normality Judgement 2

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

BB:DTC P0345 CAMSHAFT POSITION SENSOR “A” CIRCUIT (BANK 2)

1. OUTLINE OF DIAGNOSIS

NOTE:
For the detection standard, refer to DTC P0340. <Ref. to GD(H4DOTC)-92, DTC P0340 CAMSHAFT POSI-
TION SENSOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC) Detecting
Criteria.>

Judgement Value

Malfunction Criteria

Threshold Value

Amount of camshaft sensor signal during 
2 revs.

< 3 time(s)

Judgement Value

Malfunction Criteria

Threshold Value

Camshaft position sensor signal

t 3 time(s)

Judgement Value

Malfunction Criteria

Threshold Value

Starter

ON

Camshaft position sensor signal

No input

Judgement Value

Malfunction Criteria

Threshold Value

Camshaft position sensor signal

Input exists