Subaru Crosstrek Service Manual: Diagnostic procedure with diagnostic trouble code (dtc)
- Dtc c2021 tire 1 air pressure low (normal mode)
- Dtc c2521 speed abnormal
- Dtc c2022 tire 2 air pressure low (normal mode)
- Dtc c2023 tire 3 air pressure low (normal mode)
- Dtc c2024 tire 4 air pressure low (normal mode)
- Dtc c2121 transmitter 1 no data
- Dtc c2122 transmitter 2 no data
- Dtc c2123 transmitter 3 no data
- Dtc c2124 transmitter 4 no data
- Dtc c2221 transmitter 1 pressure data abnormal
- Dtc c2222 transmitter 2 pressure data abnormal
- Dtc c2223 transmitter 3 pressure data abnormal
- Dtc c2224 transmitter 4 pressure data abnormal
- Dtc c2321 transmitter 1 function code abnormal
- Dtc c2322 transmitter 2 function code abnormal
- Dtc c2323 transmitter 3 function code abnormal
- Dtc c2324 transmitter 4 function code abnormal
- Dtc c2421 transmitter 1 battery voltage low
- Dtc c2422 transmitter 2 battery voltage low
- Dtc c2423 transmitter 3 battery voltage low
- Dtc c2424 transmitter 4 battery voltage low
Wiring diagram
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS) > Control Module I/O SignalWIRING DIAGRAMRefer to “Tire Pressure Monitoring System” in the wiring diagram. Tire Pressure Monitoring System ...
Dtc c2021 tire 1 air pressure low (normal mode)
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C2021 TIRE 1 AIR PRESSURE LOW (NORMAL MODE)NOTE:Refer to DTC C2024 for diagnostic procedur ...
Other materials:
Preparation tool
CONTROL SYSTEMS > General DescriptionPREPARATION TOOL1. SPECIAL TOOLILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARKS — SUBARU SELECT MONITOR 4Used for setting of each function and troubleshooting for electrical system.NOTE:For detailed operation procedures of Subaru Select Monitor 4, refer to “A ...
Inspection
TELEMATICS SYSTEM (DIAGNOSTICS) > Subaru Select MonitorINSPECTION1. COMMUNICATION FOR INITIALIZING IMPOSSIBLEWhen communication with DCM is impossibleDetecting condition:• Defective harness connector• Power supply circuit malfunction• Defective DCM• Defective CAN communica ...
Procedure
LAN SYSTEM (DIAGNOSTICS) > CAN Communication Circuit CheckPROCEDURENOTE:• When measuring the resistance of CAN communication circuit, measure it in sleep status.To enter sleep status– With ignition switch OFF and key or switch operation stopped, keep the doors, trunk, and rear gate all c ...
