Subaru 2009 IMPREZA Service Manual page 2253

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
Step
1 CHECK IGNITION SWITCH.
2 CHECK BATTERY.
3 CHECK BATTERY TERMINAL.
4 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to ON.
2) Using the Subaru Select Monitor, check
whether communication to other systems can
be executed normally.
5 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to OFF.
2) Disconnect the tire pressure monitoring
control module connector.
3) Turn the ignition switch to ON.
4) Check whether communication to other sys-
tems can be executed normally.
6 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the tire pressure monitoring
control module.
3) Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B40) No. 7 — Chassis ground:
7 CHECK TIRE PRESSURE MONITORING
CONTROL MODULE OUTPUT SIGNAL.
1) Turn the ignition switch to ON.
2) Measure the voltage between tire pressure
monitoring control module and chassis ground.
Connector & terminal
(B40) No. 7 (+) — Chassis ground (–):
8 CHECK HARNESS CONNECTOR BETWEEN
TIRE PRESSURE MONITORING CONTROL
MODULE AND DATA LINK CONNECTOR.
Measure the resistance between tire pressure
monitoring control module and data link con-
nector.
Connector & terminal
(R211) No. 1 — (B40) No. 7:
9 CHECK TIRE PRESSURE MONITORING
CONTROL MODULE CONNECTOR.
Turn the ignition switch to OFF.
Subaru Select Monitor
Check
Is the ignition switch ON?
Is the voltage 11 V or more?
Is there poor contact at battery
terminal?
Is the system name displayed
on Subaru Select Monitor?
Is the system name displayed
on Subaru Select Monitor?
Is the resistance 1 M or
more?
Is the voltage less than 1 V?
Is the resistance less than 0.5 ? Go to step 9.
Is the tire pressure monitoring
control module connector
inserted in the tire pressure
monitoring control module until
it locks?
TPM(diag)-12
Yes No
Go to step 2. Turn the ignition
switch to ON, and
select TPM mode
using Subaru
Select Monitor.
Go to step 3. Charge or replace
the battery.
Repair or tighten Go to step 4.
the battery termi-
nal.
Go to step 8. Go to step 5.
Replace the tire Go to step 6.
pressure monitor-
ing control module.
<Ref. to WT-13,
TIRE PRESSURE
MONITORING
CONTROL MOD-
ULE, REMOVAL,
Tire Pressure
Monitoring Sys-
tem.>
Go to step 7. Repair the harness
and connector
between each con-
trol module and
data link connec-
tor.
Go to step 8. Repair the harness
and connector
between each con-
trol module and
data link connec-
tor.
Repair the harness
and connector
between tire pres-
sure monitoring
control module and
data link connec-
tor.
Go to step 10. Insert the tire pres-
sure monitoring
control module
connector into the
tire pressure moni-
toring control mod-
ule.