Subaru Legacy BN/BS (2015-2019) Service Manual: Tire pressure warning light is 25 times blinking and turn on

Subaru Legacy BN/BS (2015-2019) Service Manual / Tire pressure monitoring system (diagnostics) / Tire pressure warning light trouble indicator light illumination pattern / Tire pressure warning light is 25 times blinking and turn on

DETECTING CONDITION:

• Defective TPMS & keyless entry CM or TPMS CM

• Defective harness

• Transmitter is faulty.

TROUBLE SYMPTOM:

Every time the engine starts, tire pressure warning light blinks 25 times and then illuminates.

WIRING DIAGRAM:

NOTE:

For the coupling connector, refer to “WIRING SYSTEM”.

Tire Pressure Monitoring System Tire Pressure Monitoring System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK DTC. Read the DTC of tire pressure monitoring. Read Diagnostic Trouble Code (DTC)	Is DTC displayed-	Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)	Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern > TIRE PRESSURE WARNING LIGHT IS 25 TIMES BLINKING AND TURN ON
2.CHECK LAN COMMUNICATION. Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE	Is there any fault-	Repair it according to the diagnosis for LAN system.	Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern > TIRE PRESSURE WARNING LIGHT IS 25 TIMES BLINKING AND TURN ON
3.CHECK COMMUNICATION LINE. Measure the resistance between TPMS & keyless entry CM connector or TPMS CM connector and body integrated unit connector. Connector & terminal Without push button start (R221) No. 11 — (i81) No. 10: With push button start (R211) No. 11 — (i81) No. 10:	Is the resistance less than 10 --	Tire Pressure Warning Light / Trouble Indicator Light Illumination Pattern > TIRE PRESSURE WARNING LIGHT IS 25 TIMES BLINKING AND TURN ON	Repair open circuit of the harness between TPMS & keyless entry CM connector or TPMS CM connector and body integrated unit connector.
4.CHECK CONNECTOR. Check each connector.	Is there poor contact or any other faults-	Repair the connector.	Replace the TPMS & keyless entry CM or TPMS CM. Tire Pressure Monitoring System

Tire pressure warning light trouble indicator light illumination pattern

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Inspection

(1)Ignition switch(8)Tire inflation pressure warning light (pressure condition)(15)Light OFF(2)OFF(9)Light OFF(16)Blink(3)ON(10)Light ON(17)1 second(4)Start(11)System status(18)Blinks 25 times(5)Tire ...

Other materials:

Installation
CAUTION:• Do not start the engine before charging refrigerant.• If the engine is started with no refrigerant charge, replace the compressor assembly.• Make sure that the water seal packing on the cover attachment area is securely attached.• Replace the O-rings with new parts, ...