Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 768

IM(diag)-7

Immobilizer Control Module I/O Signal

IMMOBILIZER (DIAGNOSTICS)

4. Immobilizer Control Module

I/O Signal

A: WIRING DIAGRAM

1. IMMOBILIZER

<Ref. to WI-158, WIRING DIAGRAM, Immobilizer

System.>

IM(diag)-8

Subaru Select Monitor

IMMOBILIZER (DIAGNOSTICS)

5. Subaru Select Monitor

A: OPERATION

1. HOW TO USE THE SUBARU SELECT

MONITOR

1) Prepare the Subaru Select Monitor kit.

2) Connect the diagnosis cable to Subaru Select

Monitor.

3) Connect the Subaru Select Monitor to data link

connector.

(1) Data link connector is located in the lower

portion of the instrument panel (on the driver’s

side).

(2) Connect the diagnosis cable to data link

connector.

CAUTION:

Do not connect scan tools other than the Suba-

ru Select Monitor.

4) Turn the ignition switch to ON and start the Sub-

aru Select Monitor.

5) Using the Subaru Select Monitor, call up DTCs

and various data, then record them.

2. READ DIAGNOSTIC TROUBLE CODE

(DTC) FOR ENGINE AND BODY INTEGRAT-

ED UNIT

Refer to “Read Diagnostic Trouble Code” for infor-

mation about how to indicate DTC. <Ref. to IM(di-

ag)-9, Read Diagnostic Trouble Code (DTC).>

3. COMMUNICATION LINE CHECK

NOTE:

The communication line between ECM and body

integrated unit can be checked in “System Opera-

tion Check Mode”. This is referred to as “Commu-

nication line check”.

1) Connect the Subaru Select Monitor.

2) On «Main Menu» display, select {Each System

Check}.

3) On «System Selection Menu» display, select

{Engine Control System}.

4) Select [OK] after the information of engine type

is displayed.

5) On «Engine Diagnosis» display, select {System

Operation Check Mode}.

6) On «System Operation Check Mode» display,

select {Immobilizer System}.

7) Start the communication line check.

8) Is «OK» displayed on screen?

If displayed, go to step 9).

If not, go to step 10).

9) After diagnostic results, it is determined that the

circuit is not shorted. Finish the communication line

check.

10) If a problem is detected, repair the trouble

cause. <Ref. to IM(diag)-18, DTC B1572 IMM CIR-

CUIT FAILURE (EXCEPT ANTENNA CIRCUIT),

Diagnostic Procedure with Diagnostic Trouble

Code (DTC).>

IM-00275

IM(diag)-9

Read Diagnostic Trouble Code (DTC)

IMMOBILIZER (DIAGNOSTICS)

6. Read Diagnostic Trouble

Code (DTC)

A: OPERATION

1. ECM

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select

{Engine Control System}.

3) Select [OK] after the information of engine type

is displayed.

4) On «Engine Diagnosis» display, select {Diag-

nostic Code(s) Display}.

5) On «Diagnostic Code(s) Display» display, select

{Current DTC} or {Past DTC}.
NOTE:

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

• For detailed concerning DTC, refer to the List of

Diagnostic Trouble Codes (DTC). <Ref. to IM(di-

ag)-14, LIST, List of Diagnostic Trouble Code

(DTC).>

2. BODY INTEGRATED UNIT

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select {In-

teg. Unit}.

3) After {Integ. unit} is displayed, select [OK].

4) On «Integ. unit mode failure diag» display, select

{Diagnostic Code(s) Display}.
NOTE:

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

• For detailed concerning DTC, refer to the List of

Diagnostic Trouble Codes (DTC). <Ref. to IM(di-

ag)-14, LIST, List of Diagnostic Trouble Code

(DTC).>

IM(diag)-10

Clear Memory Mode

IMMOBILIZER (DIAGNOSTICS)

7. Clear Memory Mode

A: OPERATION

1. ECM

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select

{Engine Control System}.

3) Select [OK] after the information of engine type

is displayed.

4) On «Engine Diagnosis» display, select {Clear

Memory}.

5) When “Done” is displayed on the display, end

the Subaru Select Monitor and turn the ignition

switch to OFF.
NOTE:

• After the memory is cleared, initial diagnosis of

the electronic throttle control is performed. Wait for

10 seconds or more after turning the ignition switch

to ON, and then start the engine.

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

2. BODY INTEGRATED UNIT

1) On «Main Menu» display, select {Each System

Check}.

2) On «System Selection Menu» display, select {In-

teg. Unit}.

3) After {Integ. unit} is displayed, select [OK].

4) On «Integ. unit mode» display, select {Clear

Memory}.

5) When “Done” is displayed on the display, end

the Subaru Select Monitor and turn the ignition

switch to OFF.
NOTE:

For detailed operation procedures, refer to “PC ap-

plication help for Subaru Select Monitor”.