Subaru Legacy IV (2008 year). Service manual — part 425
GD(H4DOTC)-150
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CC:DTC P0512 STARTER REQUEST CIRCUIT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of starter SW.
Judge as ON NG when the starter SW signal remains ON.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. 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: 180000 ms
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
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Engine condition
After engine starting
Starter OFF signal
Not detected
Battery voltage
t 8 V
Judgement Value
Malfunction Criteria
Threshold Value
Starter OFF signal
Detected
Battery voltage
t 8 V
GD(H4DOTC)-151
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CD:DTC P0513 INCORRECT IMMOBILIZER KEY
1. OUTLINE OF DIAGNOSIS
2. ENABLE CONDITION
When starting the engine.
3. GENERAL DRIVING CYCLE
Perform the diagnosis only after starting the engine.
4. DIAGNOSTIC METHOD
Judge as NG when the conditions for the outline of the diagnosis of the top are established.
DTC
Item
Outline of Diagnosis
P0513
Incorrect Immobilizer Key
Incorrect immobilizer key (Use of unregistered key in body integrated unit)
P1570
Antenna
Faulty antenna
P1571
Reference Code Incompatibility
Reference code incompatibility between body integrated unit and ECM
P1572
IMM Circuit Failure
(Except Antenna Circuit)
Communication failure between body integrated unit and ECM
P1574
Key Communication Failure
Failure of body integrated unit to verify key (transponder) ID code or transponder
failure
P1576
EGI Control Module EEPROM
ECM malfunctioning
P1577
IMM Control Module EEPROM
Body integrated unit malfunctioning
P1578
Meter Failure
Reference code incompatibility between body integrated unit and combination
meter
GD(H4DOTC)-152
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CE:DTC P0600 SERIAL COMMUNICATION LINK
1. OUTLINE OF DIAGNOSIS
Detect malfunction of CAN communication.
When CAN communications is not possible, and CAN communications with TCM is not possible, judge as
NG if data from the TCM is not normal.
2. COMPONENT DESCRIPTION
ECM and TCM are connected by high speed CAN.
(Common Specifications)
CAN Protocol 2.0 B (Active)
Frame Format: 11 Bit ID Frame (Standard Frame)
(High speed CAN)
Conforms to ISO11898
Communication Speed: 500 kbps
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after starting the engine.
5. DIAGNOSTIC METHOD
• Abnormality Judgement
Judge as NG when the following conditions are established.
Time Needed for Diagnosis: Less than 1 second
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Secondary Parameters
Enable Conditions
None
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
> 10.9 V
Starter switch
OFF
Engine
run
bus off flag or error warning flag
set (error)
or
ID received from control module con-
nected to driving system CAN
None during 500 milli-
seconds
or
Data updated from control module con-
nected to driving system CAN
None during 500 milli-
seconds
GD(H4DOTC)-153
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
• 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: 1000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Judgement Value
Malfunction Criteria
Threshold Value
Battery voltage
> 10.9 V
Starter switch
OFF
Engine
run
bus off flag or error warning flag
clear (No error)
ID received from control module con-
nected to driving system CAN
Yes
Data updated from control module con-
nected to driving system CAN
Yes
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