Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 482

TPM(diag)-5

Electrical Component Location

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

3. Electrical Component Location

A: LOCATION

(1)

TPMS & keyless entry control
module

(2)

Tire pressure warning light

(3)

Snap-in type transmitter

• 5 DOOR MODEL

• 4 DOOR MODEL

TPM00075

(1)

(1)

(2)

(3)

(3)

TPM00076

(1)

TPM00077

(1)

TPM00048

(2)

(3)

TPM00049

TPM(diag)-6

Control Module I/O Signal

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

4. Control Module I/O Signal

A: ELECTRICAL SPECIFICATION

B: WIRING DIAGRAM

<Ref. to WI-71, WIRING DIAGRAM, Tire Pressure

Monitoring System.>

Terminal

No.

Content

Measured value and measuring

conditions

Remarks

1

—

—

—

2

Tire pressure warning light output

Illuminate when malfunction
occurs, or tire pressure decreases

System failure: blinks 25 times → illuminates
Tire pressure decreases: turns on

3

Speed sensor signal

While driving (Pulse signal)

Change according to vehicle speed

4

Ignition power supply

IG switch ON (Battery voltage)

—

5

GND

0 V (Always)

—

6

Battery power supply

Battery voltage (Always)

—

7

—

—

—

8

—

—

—

9

—

—

—

10

—

—

—

11

Body integrated unit

—

—

12

Select monitor communication

Serial communication

—

10

12 11

1

2

4 3

6 5

9 8 7

R221

TPM00081

TO

TPM(diag)-7

Subaru Select Monitor

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

5. Subaru Select Monitor

A: OPERATION

1. READ DIAGNOSTIC TROUBLE CODE

(DTC)

1) Prepare the Subaru Select Monitor kit. <Ref. to

TPM(diag)-4, SPECIAL TOOL, PREPARATION

TOOL, General Description.>

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 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 run the Suba-

ru Select Monitor.

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

Check}.

6) On «System Selection Menu» display, select

{Tire pressure monitor}.

7) On «Tire pressure monitor diagnosis» display,

select {Diagnostic Code(s) Display}.
NOTE:

• For detailed operation procedures, refer to “PC

application help for Subaru Select Monitor”.

• For details concerning DTCs, refer to List of Di-

agnostic Trouble Code (DTC). <Ref. to TPM(diag)-

20, List of Diagnostic Trouble Code (DTC).>

• All DTCs detected will be displayed.

• If a particular DTC is not properly stored in mem-

ory (due to a voltage drop of the TPMS & keyless

entry control module power supply, etc.) when a

problem occurs, a DTC suffixed with a question

mark will appears on the Subaru Select Monitor

display. This shows it may be an unreliable read-

ing.

8) If TPMS & keyless entry control module and

Subaru Select Monitor cannot communicate, check

the communication circuit. <Ref. to TPM(diag)-10,

COMMUNICATION FOR INITIALIZING IMPOSSI-

BLE, INSPECTION, Subaru Select Monitor.>

9) When DTC is not displayed, check the tire infla-

tion pressure warning light blinking patterns. <Ref.

to TPM(diag)-15, INSPECTION, Tire Pressure

Warning Light / Trouble Indicator Light Illumination

Pattern.>

IM-00275

TPM(diag)-8

Subaru Select Monitor

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

2. DATA DISPLAY

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

2) On «System Selection Menu» display, select {Tire pressure monitor}.

3) After the {Tire pressure monitor} is displayed, select [OK].

4) On «Tire pressure monitor diagnosis» display, select {Data Display}, and then necessary data will be dis-

played.

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

3. CLEAR MEMORY

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

Check}.

2) On «System Selection Menu» display, select

{Tire pressure monitor}.

3) After the {Tire pressure monitor} is displayed,

select [OK].

4) On «Tire pressure monitor diagnosis» display,

select {Clear Memory}.

5) When “Done” and “Turn off the ignition switch.”

are shown on the display screen, turn the Subaru

Select Monitor and the ignition switch to OFF.
NOTE:

For details concerning the operation procedure, re-

fer to “PC application help for Subaru Select Moni-

tor”.

1. Data monitor (analog)

Display

Contents to be displayed

Unit of measure

Tire 1 FN code

LEARN, LOW BAT, OFF, WAKE, RE ME,
NORMAL

LEARN: Transmitter ID has been sent by the transmitter
registration tool.
LOW BAT: Battery voltage of the transmitter has been
lowered.
OFF: Transmitter is not functioning. (No data transmis-
sion)
RE ME: When the tire pressure changed within the
range of ±8.4 kPa.
WAKE: When data transmission started from the stop
status.
NORMAL: Conditions other than the above.

Tire 2 FN code
Tire 3 FN code

Tire 4 FN code

Tire 1 air pressure

Value converted to tire pressure from data
delivered from transmitter is displayed.
(The figure may differ from the actual
measured values.)

kPa, psig, mmHg, inHg

Tire 2 air pressure

kPa, psig, mmHg, inHg

Tire 3 air pressure

kPa, psig, mmHg, inHg

Tire 4 air pressure

kPa, psig, mmHg, inHg

Vehicle speed

Vehicle speed signal which is input in con-
trol module

km/h (MPH)

Pressure warning

Threshold where tire pressure warning
light illuminates

kPa, psig, mmHg, inHg

Return pressure

Threshold where tire pressure warning
light goes out

kPa, psig, mmHg, inHg