Clearance Sonar Main Switch Circuit [08/2015 - ]: 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: Body Electrical / Intuitive P/A / Data List.
5. According to the display on the Techstream, read the Data List.
   INTUITIVE P/A
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Main Switch	Clearance sonar main switch/OFF or ON	OFF: Clearance sonar main switch off ON: Clearance sonar main switch on	-
   Intuitive P/A ECU Type	Type of intuitive P/A ECU/Normal	Normal: Normal clearance sonar type	-

   Result

   Result	Proceed to
   Both of the following conditions are met: The display changes as shown above when the clearance sonar main switch is operated. "Normal" is displayed.	A
   "Normal" is not displayed.	B
   Both of the following conditions are met: The display does not change as shown above when the clearance sonar main switch is operated. "Normal" is displayed.	C

B → See step   7 

C → See step   2 

A → See step   6 

1. Remove the back sonar or clearance sonar switch assembly. Refer to REMOVAL [08/2015 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   9 (IG) - 6 (ECU)	Clearance sonar main switch on	Below 1 Ω
   9 (IG) - 6 (ECU)	Clearance sonar main switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Back Sonar or Clearance Sonar Switch Assembly)

NG → See step   5 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   I5-9 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   I5-9 (IG) - Body ground	Engine switch off	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I82-9 (CLSW) - I5-6 (ECU)	Always	Below 1 Ω
   I82-9 (CLSW) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   7