SUBARU impreza SERVICE and USER MANUAL

DTC P000A A CAMSHAFT POSITION SLOW RESPONSE (BANK 1)


GENERAL DESCRIPTION(H4DO w/o HEV) > Diagnostic Trouble Code (DTC) Detecting Criteria

DTC P000A A CAMSHAFT POSITION SLOW RESPONSE (BANK 1)

1. OUTLINE OF DIAGNOSIS

Detect the AVCS system malfunction.

Judge NG when the amount of AVCS actual timing advance does not approach to the amount of AVCS target timing advance.

2. ENABLE CONDITIONS

Secondary Parameters

Enable Conditions

Time of establishing all secondary parameter conditions

≥ 1000 ms

Battery voltage

≥ 10.9 V

Engine speed

≥ 500 rpm

Engine oil temperature

≥ −40 °C (−40 °F)

AVCS control

Operation

Target timing advance change amount (per 64 ms)

< 3.2 °CA

3. GENERAL DRIVING CYCLE

Perform the diagnosis continuously when the engine speed increases and AVCS operates.

4. DIAGNOSTIC METHOD

When the differences of target timing advance amount and actual timing advance amount is calculated during AVCS control, and the difference per predetermined time is the specified value or larger.

Judge as NG when the following conditions are established within the predetermined time.

Malfunction Criteria

Threshold Value

Σ(Target position − Actual position)

> 4000 °CA (Bank 1)

> 4000 °CA (Bank 2)

or

Σ(Target position − Actual position)

< −4000 °CA (Bank 1)

< −4000 °CA (Bank 2)

Time Needed for Diagnosis: 25000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.


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