Subaru Legacy IV (2008 year). Manual - part 858

TPM(diag)-18

Clear Memory Mode

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

8. Clear Memory Mode

A: OPERATION

For details concerning DTC clear operation, refer to
“Subaru Select Monitor”. <Ref. to TPM(diag)-8,
Subaru Select Monitor.>

TPM(diag)-19

Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

9. Tire Pressure Warning Light / Trouble Indicator Light Illumination 

Pattern

A: INSPECTION

(1)

Ignition switch

(8)

Tire pressure warning light

(14)

Tire pressure warning light

(2)

OFF

(9)

Light OFF

(15)

Light OFF

(3)

ON

(10)

Light ON

(16)

Blink

(4)

Start

(11)

System status

(17)

1 second

(5)

Tire pressure

(12)

Normal operation

(18)

Blinks 25 times

(6)

Meet the specification

(13)

Malfunction

(19)

2 seconds

(7)

Under the specification (refer to 
the following table.)

TPM00043

(2)

(3)

(4)

(3)

(5)

(6)

(7)

(8)

(9)

(10)

(2)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(19)

(10)

(9)

(19)

(1)

(18)

TPM(diag)-20

Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

1) When the tire pressure warning light does not illuminate in accordance with this illumination pattern, there
must be an electrical malfunction.
2) When tire pressure warning light does not go off, check the tire pressure monitoring control module/warn-
ing light circuit and the combination meter circuit. <Ref. to TPM(diag)-22, TIRE PRESSURE WARNING
LIGHT DOES NOT COME OFF, Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern.>

NOTE:
If the problem is fixed while driving at approximately 40 km/h (25 MPH) after the tire pressure warning light
blinks/lights, the warning light goes out and the tire pressure monitor system operates normally. (If there is
a decrease in tire pressure, or a malfunction of the system, the malfunction history is displayed.)

Tire size

Air pressure

P225/60 R16 97H

180 kPa (1.8 kgf/cm

2

, 26 psi), or less

P225/55 R17 95V

P205/55 R16 89H

186 kPa (1.86 kgf/cm

2

, 27 psi) or less

P205/50 R17 88V

215/45 R18 89Y

P215/45 R18 89W

215/45 R17 91W

196 kPa (1.96 kgf/cm

2

, 28 psi) or less

TPM(diag)-21

Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

B: TIRE PRESSURE WARNING LIGHT DOES NOT COME ON

DETECTING CONDITION:
Defective combination meter
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), the tire pressure warning light does not come on (for
approximately 2 seconds).
WIRING DIAGRAM:

Step

Check

Yes

No

1

CHECK DIAGNOSTIC TROUBLE CODE 
(DTC).
Connect the Subaru Select Monitor, and read 
the Diagnostic Trouble Code. <Ref. to 
TPM(diag)-8, READ DIAGNOSTIC TROUBLE 
CODE (DTC), OPERATION, Subaru Select 
Monitor.>

Is diagnostics code (DTC) dis-
played?

Perform the diag-
nosis according to 
DTC. <Ref. to 
TPM(diag)-26, List 
of Diagnostic Trou-
ble Code (DTC).>

Replace the com-
bination meter. 
<Ref. to IDI-22, 
REMOVAL, Com-
bination Meter.>

FB-36

F/B FUSE NO.5

(IG)

2

6

A:

i10

B:

i11

A3

B6

FB-17

F/B FUSE NO. 7

 (B)

i102

R167

R211

FB-48

F/B FUSE NO. 4

 (IG)

16

5

9

1 2 3

4 5 6

7 8 9 10 11 12 13 14

B:

i11

i102

1 2 3
8 9 10

4

11 12 13 14 15 16

5 6 7

A:

i10

1 2 3 4 5

6 7 8 9 10

11 12

19 20 21

13 14 15 16

17 18

22

R211

1 2 3 4 5 6
7 8 9 10 11 12

TPM00042

TO POWER SUPPLY CIRCUIT

COMBINATION

 METER

TIRE INFLATION 
PRESSURE
WARNING LIGHT

DRIVE CIRCUIT

MICRO COMPUTER

TPM CONTROL MODULE