Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 386

GD(H4DOTC)-296

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

• Abnormality Judgment
Judge as NG when the following conditions are established.

Time Needed for Diagnosis: Approx. 5 — 9.5 hours

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cy-

cles.
• Normality Judgment
Judge as OK and clear the NG if the following conditions are established.

Time Needed for Diagnosis: Approx. 5 — 9.5 hours

Judgment Value

Malfunction Criteria

Threshold Value

Ignition switch

ON

Driving cycle

Completed

When any one of the followings is estab-
lished.

 

• Timer diagnosis

NG

• Full count diagnosis

NG

• Soaking timer IC setting diagnosis

NG

• Timer diagnosis (during soaking)

NG

• Wake-up diagnosis

NG

Judgment Value

Malfunction Criteria

Threshold Value

Ignition switch

ON

Driving cycle

Completed

All of the following conditions are estab-
lished.

 

• Timer diagnosis

OK

• Full count diagnosis

OK

• Soaking timer IC setting diagnosis

OK

• Timer diagnosis (during soaking)

OK

• Wake-up diagnosis

OK

GD(H4DOTC)-297

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

FY:DTC U0073 CAN FAILURE, BUS ‘OFF’ DETECTION

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when CAN communication failure has occurred.

2. COMPONENT DESCRIPTION

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

Conforms to ISO11898

Communication Speed: 500 kbps

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after starting the engine.

5. DIAGNOSTIC METHOD

• Abnormality Judgment
Judge as NG when the following conditions are established.

Time Needed for Diagnosis: 436 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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: 1000 ms

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

> 10.9 V

Starter switch

OFF

Engine

run

bus off flag or error warning flag

set (error)

Judgment Value

Malfunction Criteria

Threshold Value

Engine

run

bus off flag or error warning flag

clear (No error)

GD(H4DOTC)-298

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

FZ:DTC U0122 CAN (VDC) DATA NOT LOADED

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when CAN communication failure has occurred between VDC CM and body integrated unit.

2. COMPONENT DESCRIPTION

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

Conforms to ISO11898

Communication Speed: 500 kbps

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after starting the engine.

5. DIAGNOSTIC METHOD

• Abnormality Judgment
Judge as NG when the following conditions are established.

Time Needed for Diagnosis: 500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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: 1000 ms

GA:DTC U0140 CAN (BCU) DATA NOT LOADED

1. OUTLINE OF DIAGNOSIS

NOTE:

For the detection standard, refer to DTC U0122. <Ref. to GD(H4DOTC)-298, DTC U0122 CAN (VDC) DATA

NOT LOADED, Diagnostic Trouble Code (DTC) Detecting Criteria.>

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

> 10.9 V

Starter switch

OFF

Engine

run

ID received from control module con-
nected to CAN

None during 500 milli-
seconds

Judgment Value

Malfunction Criteria

Threshold Value

Engine

run

ID received from control module con-
nected to CAN

Yes

GD(H4DOTC)-299

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

GB:DTC U0416 CAN (VDC) DATA ABNORMAL

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when data received from VDC CM and body integrated unit is not normal.

2. COMPONENT DESCRIPTION

(Common Specifications)

CAN Protocol 2.0 B (Active)

Frame Format: 11 Bit ID Frame (Standard Frame)

Conforms to ISO11898

Communication Speed: 500 kbps

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after starting the engine.

5. DIAGNOSTIC METHOD

• Abnormality Judgment
Judge as NG when the following conditions are established.

Time Needed for Diagnosis: 2 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
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: 1000 ms

GC:DTC U0422 CAN (BCU) DATA ABNORMAL

1. OUTLINE OF DIAGNOSIS

NOTE:

For the detection standard, refer to DTC U0416. <Ref. to GD(H4DOTC)-299, DTC U0416 CAN (VDC) DATA

ABNORMAL, Diagnostic Trouble Code (DTC) Detecting Criteria.>

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

> 10.9 V

Starter switch

OFF

Engine

run

Data updated from control module connected to CAN

None during 2000 milliseconds

Judgment Value

Malfunction Criteria

Threshold Value

Engine

run

Data updated from control module connected to CAN

Yes