Distance Control Switch Circuit: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain/Radar Cruise/Data List.
5. Check the Data List to confirm proper function of the distance control switch.
   RADAR CRUISE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Car Dist Time Setting	Vehicle distance time setting condition/Shrt, Mid, Long, No	Vehicle-to-vehicle distance selected by steering pad switch (distance control switch)	-

   OK

   When the distance control switch is operated, the display changes in accordance with switch operation.

NG → See step   2 

OK → See step   8 

1. Remove the steering pad switch assembly. Refer to REMOVAL .
   Fig 1: Identifying Steering Pad Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   d1-4 - d1-6	Distance control switch ON	Below 2.5 Ω
   d1-4 - d1-6	Distance control switch OFF	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1

   Component without harness connected (Steering Pad Switch Assembly

   *2

   Distance Control Switch

3. Reinstall the steering pad switch assembly. Refer to INSTALLATION .

NG → See step   6 

OK: Go to next step 

1. Remove the spiral cable. Refer to REMOVAL .
   Fig 2: Identifying Spiral Cable

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   d1-4 - E30-11 (DIST)	The spiral cable is centered	Below 1 Ω
   	The spiral cable position is 2.5 rotations to the left
   	The spiral cable position is 2.5 rotations to the right
   d1-6 - E30-2 (ECC)	The spiral cable is centered	Below 1 Ω
   	The spiral cable position is 2.5 rotations to the left
   	The spiral cable position is 2.5 rotations to the right

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Spiral Cable)

   HINT: 

   The spiral cable makes a maximum of approximately 5 rotations.

3. Reinstall the spiral cable. Refer to INSTALLATION .

NG → See step   9 

OK: Go to next step 

1. Disconnect the distance control ECU connector.
2. Disconnect the spiral cable connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A8-16 (MODE) - E30-11 (DIST)	Always	Below 1 Ω
   A8-16 (MODE) or E30-11 (DIST) - Body ground	Always	10 kΩ or higher

4. Reconnect the distance control ECU connector.
5. Reconnect the spiral cable connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - DISTANCE CONTROL ECU) 

OK: Go to next step 

1. Disconnect the spiral cable connector.
   Fig 3: Identifying Spiral Cable Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E30-2 (ECC) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Spiral with Sensor Cable Sub-assembly)

3. Reconnect the spiral cable connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - BODY GROUND) 

OK → See step   7