Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 203

EN(H4DOTC)(diag)-36

General Scan Tool

ENGINE (DIAGNOSTICS)

2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)

Refer to data denoting the current operating condition of analog input/output, digital input/output or the pow-

ertrain system.

A list of the support data and PID (Parameter Identification) codes are shown in the following table.

NOTE:

Refer to general scan tool manufacturer’s operation manual to access current powertrain diagnostic data

(MODE $01).

PID

Data

Unit of measure

$01

Number of emission-related powertrain DTC, and malfunction indicator light status and diag-
nosis support information

 — 

$03

Fuel system control status

 — 

$04

Calculated engine load value

%

$05

Engine coolant temperature

°C

$06

Short term fuel trim

%

$07

Long term fuel trim

%

$0B

Intake manifold absolute pressure

kPa

$0C

Engine speed

rpm

$0D

Vehicle speed

MPH

$0E

Ignition timing advance

°

$0F

Intake air temperature

°C

$10

Amount of intake air

g/s

$11

Throttle valve absolute opening angle

%

$12

Secondary air control status

 — 

$13

Check whether oxygen sensor is installed.

 — 

$15

Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor

V and %

$1C

Supporting OBD system

 — 

$1F

Elapsed time after starting the engine

sec

$21

Running distance after MIL turns on

miles

$24

A/F value and A/F sensor output voltage

— and V

$2E

Evaporative purge

%

$2F

Fuel level

%

$30

Number of warm ups after DTC clear

time

$31

Travel distance after DTC clear

miles

$33

Atmospheric pressure

kPa

$34

A/F sensor λ value, current

— and mA

$3C

Catalyst temperature

°C

$41

Diagnostic monitor of each drive cycle

 — 

$42

ECM power voltage

V

$43

Absolute load

%

$44

A/F target lambda

 — 

$45

Relative throttle opening angle

%

$46

Ambient temperature

°C

$47

Absolute throttle opening angle 2

%

$49

Absolute accelerator opening angle 1

%

$4A

Absolute accelerator opening angle 2

%

$4C

Target throttle opening angle

%

$4D

Engine operation time during MIL on

min

$4E

Elapsed time after DTC clear

min

$51

Fuel used

 — 

$5A

Relative accelerator opening angle

%

$65

Neutral status

 — 

EN(H4DOTC)(diag)-37

General Scan Tool

ENGINE (DIAGNOSTICS)

3. MODE $02 (POWERTRAIN FREEZE FRAME DATA)

Refer to data denoting the operating condition when trouble is detected by on-board diagnosis system.

A list of the support data and PID (Parameter Identification) codes are shown in the following table.

NOTE:

Refer to general scan tool manufacturer’s operation manual to access freeze frame data (MODE $02).

4. MODE $03 (EMISSION-RELATED POWERTRAIN DTC)

Refer to “List of Diagnostic Trouble Code (DTC)” for information about data denoting emission-related pow-

ertrain DTC. <Ref. to EN(H4DOTC)(diag)-87, List of Diagnostic Trouble Code (DTC).>

5. MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)

Refer to the mode used to clear or reset emission-related diagnostic information.
NOTE:

Refer to the manufacturer’s operation manual for the general scan tool to clear the emission-related diag-

nostic information (MODE $04).

PID

Data

Unit of measure

$02

DTC that caused freeze frame data to be stored

 — 

$03

Fuel system control status

 — 

$04

Calculated engine load value

%

$05

Engine coolant temperature

°C

$06

Short term fuel trim

%

$07

Long term fuel trim

%

$0B

Intake manifold absolute pressure

kPa

$0C

Engine speed

rpm

$0D

Vehicle speed

MPH

$0E

Ignition timing advance

°

$0F

Intake air temperature

°C

$10

Intake air amount

g/s

$11

Throttle valve absolute opening angle

%

$12

Secondary air control status

 — 

$13

Air fuel ratio sensor

 — 

$15

Rear oxygen sensor voltage, compensation value

V and %

$1C

Supporting OBD system

 — 

$1F

Elapsed time after starting the engine

sec

$2E

Evaporative purge

%

$2F

Fuel level

%

$33

Barometric pressure

kPa

$42

ECM power voltage

V

$43

Absolute load

%

$44

A/F target lambda

 — 

$45

Relative throttle opening angle

%

$46

Ambient temperature

°C

$47

Absolute throttle opening angle 2

%

$49

Absolute accelerator opening angle 1

%

$4A

Absolute accelerator opening angle 2

%

$4C

Target throttle opening angle

%

$65

Neutral status

 — 

EN(H4DOTC)(diag)-38

General Scan Tool

ENGINE (DIAGNOSTICS)

6. MODE $06

Refer to diagnostic value of troubleshooting and data of test limit indicated on the support data bit sequence

table. A list of the support data is shown in the following table.
NOTE:

Some items are not displayed according to the specifications.

OBDMID

TID

SID

Diagnostic item

$01

$84

$1E

A/F sensor range failure (Bank 1 Sensor 1)

$85

$1E

$86

$20

A/F sensor response failure (Bank 1 Sensor 1)

$91

$20

$92

$10

$A3

$20

$A4

$10

$AC

$10

$AD

$10

$AE

$10

$AF

$10

$CD

$20

$CF

$20

$DF

$10

$02

$07

$0B

Oxygen sensor drop failure (Bank 1 Sensor 2)

$08

$0B

$A5

$0B

$05

$10

Oxygen sensor response failure (Bank 1 Sensor 2)

$06

$10

$BD

$10

$D1

$10

Oxygen sensor delay failure (Bank 1 Sensor 2)

$D2

$01

$21

$89

$20

Catalyst deterioration diagnosis (Bank 1)

$35

$8B

$9D

VVT monitor (Bank 1)

$8C

$9D

$8D

$9D

$8E

$9D

$D3

$9D

$D4

$9D

$D5

$9D

$D6

$9D

$36

$8B

$9D

VVT monitor (Bank 2)

$8C

$9D

$8D

$9D

$8E

$9D

$D3

$9D

$D4

$9D

$D5

$9D

$D6

$9D

EN(H4DOTC)(diag)-39

General Scan Tool

ENGINE (DIAGNOSTICS)

7. MODE $07

Refer to the data of DTC (pending code) for troubleshooting result about emission in the first time.

8. MODE $08 (REQUEST CONTROL FOR ON-BOARD SYSTEM, TEST, AND COMPONENT)

Perform “Active Test” of the on-board system.

9. MODE $09

Refer to the data of the vehicle specification.

$3C

$96

$FE

Evaporative emission control system (0.02 inch leak)

$C1

$FE

$C2

$FE

$C3

$FE

$C4

$FE

$C5

$FE

$C6

$35

$C7

$FE

$C8

$FE

$C9

$FE

$CA

$FE

$3D

$98

$FE

Evaporative emission control system (Purge flow)

$CB

$35

ELCM purge flow

$CC

$FE

$41

$9B

$14

A/F sensor heater characteristics failure (Bank 1 Sensor 1)

$42

$A2

$24

Oxygen sensor heater characteristics failure (Bank 1 Sensor 2)

$71

$9E

$17

Secondary air system (all systems)

$9F

$0B

$A1

$0B

$B0

$17

Secondary air system (relay 2 — combination valve 2)

$B3

$0B

$B5

$0B

$B4

$0B

$B6

$0B

$B8

$0B

$B9

$31

$BA

$31

$A1

$0B

$24

Misfire monitoring (All cylinders)

$0C

$24

$A2

$0B

$24

Misfire monitoring (#1 cylinder)

$0C

$24

$A3

$0B

$24

Misfire monitoring (#2 cylinder)

$0C

$24

$A4

$0B

$24

Misfire monitoring (#3 cylinder)

$0C

$24

$A5

$0B

$24

Misfire monitoring (#4 cylinder)

$0C

$24

OBDMID

TID

SID

Diagnostic item