Slip Indicator Light Remains ON: Wiring Diagram

Fig 1: Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

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

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

      Result 

      CONDITION CHART
      
      

      Condition	Proceed to
      DTC is not output	A
      DTC is output	B

   B : INSPECT CAN COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

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

      Result 

      CONDITION CHART
      
      

      Condition	Proceed to
      DTC is not output	A
      DTC is output	B

   B : INSPECT MULTIPLEX COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

3. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
   1. Check if the skid control ECU connector is securely connected.

      OK: The connector should be securely connected. 

   NG : CONNECT CONNECTOR TO ECU CORRECTLY 

   OK : GO TO NEXT STEP 

4. CHECK BATTERY 
   1. Check the battery voltage.

      Standard voltage: 11 to 14 V 

   NG : CHECK AND REPLACE CHARGING SYSTEM OR BATTERY 

   OK : GO TO NEXT STEP 

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

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      3 - 4	Switch is pressed	Below 1 Ω
      3 - 4	Switch is not pressed	10 kΩ or higher

      Fig 2: Inspecting Traction Off Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG : REPLACE TRACTION OFF SWITCH 

   OK : GO TO NEXT STEP 

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

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      J37-4 - Body ground	Always	Below 1 Ω

      Fig 3: Inspecting Traction Off Switch (Ground Terminal)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   OK : GO TO NEXT STEP 

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

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      J77-7 (CSW) - J37-3	Always	Below 1 Ω
      J77-7 (CSW) - Body ground	Always	10 kΩ or higher

      Fig 4: Checking Harness And Connector (Skid Control ECU - Traction Off Switch)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK : GO TO NEXT STEP 

8. INSPECT COMBINATION METER ASSEMBLY 
   1. Reconnect the skid control ECU connector and the traction OFF switch connector.
   2. Perform Active Test of the combination meter (meter CPU) using the intelligent tester (See DATA LIST / ACTIVE TEST ).

      OK: The SLIP indicator light turns on or off in accordance with the intelligent tester. 

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See PROBLEM SYMPTOMS TABLE  ).

   NG : REPLACE COMBINATION METER ASSEMBLY 

   OK : REPLACE SKID CONTROL ECU