Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc c2521 speed abnormal

Subaru Legacy BN/BS (2015-2019) Service Manual / Tire pressure monitoring system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc c2521 speed abnormal

DTC DETECTING CONDITION:

Detected when transmitter normal signal is received at a vehicle speed of less than 6 km/h (4 MPH).

TROUBLE SYMPTOM:

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 LAN COMMUNICATION. Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE	Is there any fault-	Repair it according to the diagnosis for LAN system.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2521 SPEED ABNORMAL
2.CHECK HARNESS (OPEN CIRCUIT). Measure the resistance between TPMS & keyless entry CM or TPMS CM and body integrated unit. Connector & terminal Without push button start (R221) No. 11 — (i81) No. 10: (R221) No. 5 — Chassis ground: With push button start (R211) No. 11 — (i81) No. 10: (R211) No. 5 — Chassis ground:	Is the resistance less than 10 --	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2521 SPEED ABNORMAL	Repair the harness.
3.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

Diagnostic procedure with diagnostic trouble code (dtc)

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Dtc c2021 tire 1 air pressure low (normal mode)

NOTE:Refer to DTC C2024 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2024 TIRE 4 AIR PRESSURE LOW (NORMAL MODE) ...

Other materials:

Electrical component location location
1. CONTROL MODULE(1)TCM (engine type FB)(3)AT OIL TEMP light(4)AWD light(2)TCM (engine type EZ) 2. SENSOR• ENGINE TYPE FB(1)Secondary speed sensor(3)Primary speed sensor(5)Inhibitor switch(2)Turbine speed sensor(4)Secondary pressure sensor • ENGINE TYPE EZ(1)Secondary speed sensor(3) ...