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Home >> Toyota >> 2018 >> 4Runner TRD Pro >> Repair and Diagnosis (Single Page) >> Suspension >> Wheels & Tire System >> Tire Pressure Warning System- Diagnostic Codes & Circuit Tests >> Tire Pressure Warning System >> DTC C2121-21: No Signal from Transmitter ID1 in Main Mode; DTC C2122-22: No Signal from Transmitter ID2 in Main Mode; DTC C2123-23: No Signal from Transmitter ID3 in Main Mode; DTC C2124-24: No Signal from Transmitter ID4 in Main Mode; DTC C2125-25: No Signal from Transmitter ID5 in Main Mode; DTC C2181-81: Transmitter ID1 not Received (Test Mode DTC); DTC C2182-82: Transmitter ID2 not Received (Test Mode DTC); DTC C2183-83: Transmitter ID3 not Received (Test Mode DTC); DTC C2184-84: Transmitter ID4 not Received (Test Mode DTC); DTC C2185-85: Transmitter ID5 not Received (Test Mode DTC) [08/2015 - 08/2019] >> Caution / Notice / Hint
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Caution / Notice / Hint

NOTE:
  • When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform registration of the transmitter IDs into the tire pressure warning ECU after the ECU and/or the tire pressure warning valve and transmitter has been replaced (Refer to REGISTRATION [08/2015 - 08/2019] ).
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