Distance Control Switch Circuit: Procedure

1. Remove the steering pad switch assembly. Refer to REMOVAL - Step 6 .
   Fig 1: Identifying Steering Pad Switch Assembly (Distance Control Switch) Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1

   Distance Control Switch

   -

   -

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   4 (DIST) - 6 (ECC)	Distance control switch on	Below 2.5 Ω
   4 (DIST) - 6 (ECC)	Distance control switch off	1 MΩ or higher

NG → See step   6 

OK: Go to next step 

1. Remove the spiral with sensor cable sub-assembly. Refer to INSTALLATION - Step 4 .
   Fig 2: Identifying Spiral With Sensor Cable Sub-Assembly & Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. If there are any defects as follows, replace the spiral with sensor cable sub-assembly with a new one: scratches, cracks, dents or chips in the connector or spiral with sensor cable sub-assembly.
3. Check the spiral with sensor cable sub-assembly.
   1. Set the spiral with sensor cable sub-assembly to the center position. Refer to REMOVAL .
   2. Rotate the spiral with sensor cable sub-assembly 2.5 times clockwise and measure the resistance according to the value(s) in the table below. Then rotate the spiral with sensor cable sub-assembly 5 times counterclockwise and measure the resistance according to the value(s) in the table below.
      NOTE:

      As the spiral with sensor cable sub-assembly may break, do not rotate the spiral with sensor cable sub-assembly more than the specified amount.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      4 (DIST) - 11 (DIST)	Always	Below 1 Ω
      6 (ECC) - 2 (ECC)	Always	Below 1 Ω

   3. Set the spiral with sensor cable sub-assembly to the center position and rotate the spiral with sensor cable sub-assembly 2.5 times clockwise. Then, while rotating the spiral with sensor cable sub-assembly 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      4 (DIST) - 11 (DIST)	Always	Below 1 Ω
      6 (ECC) - 2 (ECC)	Always	Below 1 Ω

NG → See step   5 

OK: Go to next step 

1. Disconnect the G28 spiral with sensor cable sub-assembly connector.
2. Disconnect the G43 driving support ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G28-11 (DIST) - G43-6 (SPSW)	Always	Below 1 Ω
   G28-2 (ECC) - Body ground	Always	Below 1 Ω
   G28-11 (DIST) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4