TIRE PRESSURE WARNING SYSTEM TERMINALS OF ECU


  1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER


    1. Disconnect the T38 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side.

      A003AP1E13
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Tire Pressure Warning ECU and Receiver)

      		 - -
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T38-1 (IG) - T38-12 (GND) W - W-B IG power source Ignition switch ON 10 to 16 V
      T38-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    2. Connect the T38 tire pressure warning ECU and receiver connector.

    3. Measure the voltage according to the value(s) in the table below. If the result is not as specified, the ECU may have a malfunction.

      Tech Tips

      Inspect the connectors from the back side while the connectors are connected.

      A003BS8E01
      Text in Illustration
      *a

      Component with harness connected

      (Tire Pressure Warning ECU and Receiver)

      		 - -
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T38-7 (CLSW) - T38-12 (GND) GR - W-B Tire pressure warning reset switch

      • Ignition switch ON

      • Tire pressure warning reset switch on

      		 Below 1.5 V

      • Ignition switch ON

      • Tire pressure warning reset switch off

      		 8 to 15 V