Subaru 2009 IMPREZA Service Manual page 1599

Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
1) When the conditions during which the differences of AVCS target timing advance amount and AVCS ac-
tual timing advance amount is large continues for certain amount of time.
2) 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.
• Abnormality Judgement
Judge as NG when the following conditions are established within the predetermined time.
Judgement Value
Malfunction Criteria
(Target position – Actual position)
or
(Target position – Actual position)
Time Needed for Diagnosis:
• AT model: 30000 ms
• MT model: 20000 ms
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
• Normality Judgement
Judge as OK and clear the NG if the following conditions are established within the predetermined time.
Judgement Value
Malfunction Criteria
(Target position – Actual position)
Time Needed for Diagnosis:
• AT model: 30000 ms
• MT model: 20000 ms
Threshold Value
> 8000 °CA (AT model)
(Bank 1)
> 8000 °CA (AT model)
(Bank 2)
> 5300 °CA (MT model)
(Bank 1)
> 5300 °CA (MT model)
(Bank 2)
< –8000 °CA (AT model)
(Bank 1)
< –8000 °CA (AT model)
(Bank 2)
< –5300 °CA (MT model)
(Bank 1)
< –5300 °CA (MT model)
(Bank 2)
Threshold Value
8000 °CA (AT model)
(Bank 1)
8000 °CA (AT model)
(Bank 2)
5300 °CA (MT model)
(Bank 1)
5300 °CA (MT model)
(Bank 2)
and
–8000 °CA (AT model)
(Bank 1)
–8000 °CA (AT model)
(Bank 2)
–5300 °CA (MT model)
(Bank 1)
–5300 °CA (MT model)
(Bank 2)
GD(H4DOTC)-11
GENERAL DESCRIPTION