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 / Distance Control Switch.
5. Check the Data List for proper functioning of the distance control switch.

   Radar Cruise

   Techstream Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Distance Control Switch	Distance control switch signal/ON or OFF	ON: Distance control switch on OFF: Distance control switch off	-

   OK

   When the distance control switch is operated, the display changes as shown above.

NG → See step   2 

OK → See step   6 

1. Disconnect the connector from the spiral cable sub-assembly.
   Fig 1: Identifying Steering Pad Switch Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1

   Component without harness connected (Steering Pad Switch Assembly)

   *2

   Distance Control Switch

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z2-4 - z2-6	Distance control switch on	Below 2.5 Ω
   z2-4 - z2-6	Distance control switch off	10 kΩ or higher

3. Reconnect the connector to the spiral cable sub-assembly.

NG → See step   7 

OK: Go to next step 

HINT: 

• Removal. Refer to REMOVAL
• Installation. Refer to INSTALLATION

1. Remove the spiral cable sub-assembly. Refer to REMOVAL .
   Fig 2: Identifying Spiral Cable Sub-Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Spiral Cable Sub-Assembly)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z2-4 - J24-11 (DIST)	The spiral cable sub-assembly is centered	Below 1 Ω
   	The spiral cable sub-assembly is 2.5 rotations to the left
   	The spiral cable sub-assembly is 2.5 rotations to the right
   z2-6 - J24-2 (ECC)	The spiral cable sub-assembly is centered	Below 1 Ω
   	The spiral cable sub-assembly is 2.5 rotations to the left
   	The spiral cable sub-assembly is 2.5 rotations to the right

   HINT: 

   The spiral cable sub-assembly makes a maximum of approximately 5 rotations.

3. Reinstall the spiral cable sub-assembly. Refer to INSTALLATION .

NG → See step   8 

OK: Go to next step 

1. Disconnect the distance control ECU connector.
   Fig 3: Identifying J24 And J17 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Spiral Cable Sub-assembly)
   *2	Front view of wire harness connector (to Distance Control ECU)

2. Disconnect the spiral cable sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   J17-16 (MODE) - J24-11 (DIST)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   J17-16 (MODE) or J24-11 (DIST) - Body ground	Always	10 kΩ or higher

4. Reconnect the distance control ECU connector.
5. Reconnect the spiral cable sub-assembly connector.

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

OK: Go to next step 

1. Disconnect the spiral cable sub-assembly connector.
   Fig 4: Identifying J24 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

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

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   J24-2 (ECC) - Body ground	Always	Below 1 Ω

3. Reconnect the spiral cable sub-assembly connector.

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

OK → See step   9