Subaru 2009 IMPREZA Service Manual page 2276

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Q: DTC 51 TRANSMITTER 1 BATTERY VOLTAGE DECREASE
NOTE:
Refer to DTC 54 for diagnostic procedure. <Ref. to TPM(diag)-35, DTC 54 TRANSMITTER 4 BATTERY
VOLTAGE DECREASE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
R: DTC 52 TRANSMITTER 2 BATTERY VOLTAGE DECREASE
NOTE:
Refer to DTC 54 for diagnostic procedure. <Ref. to TPM(diag)-35, DTC 54 TRANSMITTER 4 BATTERY
VOLTAGE DECREASE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
S: DTC 53 TRANSMITTER 3 BATTERY VOLTAGE DECREASE
NOTE:
Refer to DTC 54 for diagnostic procedure. <Ref. to TPM(diag)-35, DTC 54 TRANSMITTER 4 BATTERY
VOLTAGE DECREASE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
T: DTC 54 TRANSMITTER 4 BATTERY VOLTAGE DECREASE
DTC DETECTING CONDITION:
Low battery signals received 20 times from each transmitter.
TROUBLE SYMPTOM:
Tire pressure warning light blinks 25 times and then illuminates.
Step
1 CHECK TRANSMITTER.
1) Replace all transmitters and register their
IDs. <Ref. to TPM(diag)-10, REGISTER
TRANSMITTER ID, OPERATION, Subaru
Select Monitor.>
2) Perform the Clear Memory Mode, and per-
form driving test.
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
Check
Is the fault eliminated?
TPM(diag)-35
Yes No
Internal battery of Replace the tire
the transmitter had pressure monitor-
worn out. ing control module.
<Ref. to WT-13,
TIRE PRESSURE
MONITORING
CONTROL MOD-
ULE, REMOVAL,
Tire Pressure
Monitoring Sys-
tem.>