Slip Indicator Light Remains ON: Wiring Diagram

Fig 1: Identifying Slip Indicator Light Remains On - Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The SLIP indicator light comes on when the traction OFF switch is ON.

1. INSPECT CAN COMMUNICATION SYSTEM 
   1. Check if the CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

      Result 

      DISPLAY (DTC OUTPUT) AND PROCEED TO REFERENCE CHART
      
      

      Display (DTC Output)	Proceed To
      DTC is not output	A
      DTC is output	B

   B : REPAIR CAN COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

2. INSPECT MULTIPLEX COMMUNICATION SYSTEM 
   1. Check if the multiplex communication system DTC is output (See DTC CHECK / CLEAR ).

      Result 

      DISPLAY (DTC OUTPUT) AND PROCEED TO REFERENCE CHART
      
      

      Display (DTC Output)	Proceed To
      DTC is not output	A
      DTC is output	B

   B : REPAIR MULTIPLEX COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

3. INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
   1. Check the skid control ECU connector's connection.

      OK: 

      The connector should be securely connected. 

   NG : CONNECT CONNECTOR TO ECU CORRECTLY 

   OK : GO TO NEXT STEP 

4. INSPECT BATTERY 
   1. Check the battery voltage.

      Voltage: 

      11 to 14 V 

   NG : INSPECT CHARGING SYSTEM 

   OK : GO TO NEXT STEP 

5. INSPECT TRACTION OFF SWITCH 
   1. Remove the traction OFF switch.
   2. Disconnect the traction OFF switch connector.
   3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      3 - 4	Pressed	Below 1 Ω
      3 - 4	Not pressed	10 kΩ or higher

   NG : REPLACE TRACTION OFF SWITCH 

   Fig 2: Identifying Traction Off Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : Go to Next Step 

6. INSPECT TRACTION OFF SWITCH (GROUND TERMINAL) 
   1. Disconnect the traction OFF switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester connection	Specified condition
      L77-4 - Body ground	Below 1 Ω

   NG : REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) 

   Fig 3: Identifying Traction Off Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : Go to Next Step 

7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO TRACTION OFF SWITCH) 
   1. Disconnect the skid control ECU connector and the traction OFF switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester connection	Specified condition
      A54-36 (CSW) - L77-3	Below 1 Ω
      A54-36 (CSW) - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 4: Identifying Skid Control ECU Connector And Traction Off Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : Go to Next Step 

8. INSPECT COMBINATION METER ASSEMBLY 
   1. Check the combination meter assembly (See REMOVAL ).

      HINT:

      If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE  .

   NG : REPLACE COMBINATION METER ASSEMBLY 

   OK : REPLACE SKID CONTROL ECU