Subaru Legacy IV (2008 year). Service manual — part 857
TPM(diag)-14
Subaru Select Monitor
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
2. WITHOUT DTC
DETECTING CONDITION:
• Defective combination meter
• Defective harness
TROUBLE SYMPTOM:
• Tire pressure warning light does not go off.
• “No diagnostic Code Present” will be displayed on the Subaru Select Monitor.
NOTE:
When the tire pressure warning light is OFF and “No diagnostic Code Present” will be displayed on the Sub-
aru Select Monitor, the system is in a normal condition.
WIRING DIAGRAM:
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
TPM(diag)-15
Subaru Select Monitor
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK SUBARU SELECT MONITOR DATA.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the data of the “Tire pressure warning
light”.
Is “ON” indicated?
Replace the tire
pressure monitor-
ing control module.
<Ref. to WT-11,
TIRE PRESSURE
MONITORING
CONTROL MOD-
ULE, REMOVAL,
Tire Pressure
Monitoring Sys-
tem.>
Go to step 2.
2
CHECK WIRING HARNESS.
Measure the resistance between tire pressure
monitoring control module and combination
meter connector.
Connector & terminal
(i11) No. 6 — (R211) No. 2:
Is the resistance less than 0.5
:? Go to step 3.
Repair the harness
and connector
between tire pres-
sure monitoring
control module and
combination meter.
3
CHECK POOR CONTACT OF CONNECTOR. Is there poor contact in the tire
pressure monitoring control
module connector and combi-
nation meter connector?
Repair the connec-
tor.
Check the combi-
nation meter.
TPM(diag)-16
Read Diagnostic Trouble Code (DTC)
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
6. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
For details concerning DTC reading procedure, re-
fer to “Subaru Select Monitor”. <Ref. to TPM(diag)-
8, Subaru Select Monitor.>
TPM(diag)-17
Inspection Mode
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
7. Inspection Mode
A: PROCEDURE
Reproduce the malfunction occurrence condition
as much as possible. Drive the vehicle at 40 km/h
(25 MPH) or faster for at least ten minutes.
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