Distance Control Switch Circuit [08/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power 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.

Result:  OK

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(See article. Refer to PROBLEM SYMPTOMS TABLE [08/2014 - ] )

Result:  NG

NG 

See step  2

1. Inspect the steering pad switch assembly (See article. Refer to INSPECTION [08/2014 - ] ).

Result:  NG

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  OK

OK 

See step  3

1. Remove the spiral with sensor cable sub-assembly (See article. Refer to REMOVAL [08/2014 - ] ).

   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
   z4-4 - H30-12 (DIST)	The spiral with sensor cable sub-assembly is centered	Below 1 Ω
   	The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
   	The spiral with sensor cable sub-assembly position is 2.5 rotations to the right
   z4-7 - H30-2 (ECC)	The spiral with sensor cable sub-assembly is centered	Below 1 Ω
   	The spiral with sensor cable sub-assembly position is 2.5 rotations to the left
   	The spiral with sensor cable sub-assembly position is 2.5 rotations to the right

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Spiral with Sensor Cable Sub-assembly)

   HINT: 

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

3. Reinstall the spiral with sensor cable sub-assembly (See article. Refer to INSTALLATION [08/2014 - ] ).

Result:  NG

NG 

REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  OK

OK 

See step  4

1. Disconnect the driving support ECU assembly connector.
2. Disconnect the spiral with sensor 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
   H5-7 (MODE) - H30-12 (DIST)	Always	Below 1 Ω
   H5-7 (MODE) or H30-12 (DIST) - Body ground	Always	Below 1 Ω

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

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - DRIVING SUPPORT ECU) 

Result:  OK

OK 

See step  5

1. Disconnect the spiral with sensor cable sub-assembly connector.

   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
   H30-2 (ECC) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

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

Result:  OK

OK 

REPLACE DRIVING SUPPORT ECU ASSEMBLY 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - BODY GROUND)