Tire Pressure Warning System Terminals Of Ecu

  1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER

Tire Pressure Warning System -- Terminals Of Ecu



CHECK TIRE PRESSURE WARNING ECU AND RECEIVER


  1. Disconnect the tire pressure warning ECU and receiver R41 connector and measure the voltage or resistance on the wire harness side.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Tire Pressure Monitoring.Tire Pressure Warning System.Tire Pressure Warning System Terminals Of Ecu


    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
    R41-1 (IG) - R41-12 (GND)
    		G - BR
    		IG power source
    		Ignition switch ON
    		10 to 16 V
    R41-12 (GND) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω

  2. Connect the tire pressure warning ECU and receiver R41 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.

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

    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Tire Pressure Monitoring.Tire Pressure Warning System.Tire Pressure Warning System Terminals Of Ecu


    Text in Illustration
    *a
    		Component with harness connected
    (Tire Pressure Warning ECU and Receiver)
    		-
    		-

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    R41-7 (CLSW) - R41-12 (GND)
    		P - BR
    		Tire pressure warning reset switch
    1. Ignition switch ON
    2. Tire pressure warning reset switch ON
    		Below 1.5 V
    1. Ignition switch ON
    2. Tire pressure warning reset switch OFF
    		8 to 15 V