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 function of the distance control switch.
   RADAR CRUISE
   
   

   Tester 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

   The display changes in accordance with switch operation.

6. Turn the engine switch off.

NG → See step   2 

OK → See step   7 

1. Remove the steering pad switch assembly. Refer to REMOVAL [06/2012 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Distance Control Switch	-	-
   *a	Component without harness connected (Steering Pad Switch Assembly)	-	-

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z5-4 - z5-7	Distance control switch ON	2.5 Ω or less
   	Distance control switch OFF	1 MΩ or higher

3. Reinstall the steering pad switch assembly. Refer to INSTALLATION [06/2012 - ] .

NG → See step   8 

OK: Go to next step 

HINT: 

• Removal. Refer to REMOVAL [06/2012 - ]
• Installation. Refer to INSTALLATION [06/2012 - ]

1. Remove the spiral cable with sensor sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   z5-4 - H22-12 (DIST)	Center	3 Ω or less
   	2.5 rotations to the left
   	2.5 rotations to the right
   z5-7 - H22-2 (ECC)	Center	3 Ω or less
   	2.5 rotations to the left
   	2.5 rotations to the right

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

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   z5-4 - H22-12 (DIST)	Always	3 Ω or less
   z5-7 - H22-2 (ECC)	Always	3 Ω or less

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Spiral Cable with Sensor Sub-assembly)
   *b	Steering Pad Switch Assembly Side
   *c	Vehicle Side

   HINT: 

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

4. Reinstall the spiral cable with sensor sub-assembly.

NG → See step   6 

OK: Go to next step 

1. Disconnect the H22 spiral cable with sensor sub-assembly connector.
2. Disconnect the H75 driving support ECU 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
   H22-12 (DIST) - H75-6 (SPSW)	Always	3 Ω or less

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   H22-12 (DIST) or H75-6 (SPSW) - Body ground	Always	1 MΩ or higher

4. Reconnect the H75 driving support ECU assembly connector.
5. Reconnect the H22 spiral cable with sensor sub-assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the H22 spiral cable with sensor sub-assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   H22-2 (ECC) - Body ground	Always	3 Ω or less

3. Reconnect the H22 spiral cable with sensor sub-assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9