CLEARANCE SONAR SYSTEM Clearance Sonar Main Switch Circuit

DESCRIPTION

Turning this switch on activates the clearance sonar system.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT CLEARANCE WARNING ECU

   
   

   1. 

      Disconnect the H33 connector from the clearance warning ECU.

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

      Voltage
      Tester connection (Symbols) Condition Specified condition H33-8 (IG) - H33-27 (E) Ignition switch ON Clearance sonar main switch ON 10 to 14 V

   
   

   OK

   RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

   NG

2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND)

   
   

   1. 

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

      Resistance
      Tester connection (Symbols) Condition Specified condition H33-27 (E) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. INSPECT CLEARANCE WARNING INDICATOR

   
   

   1. 

      Remove the clearance warning indicator.

   2. Disconnect the H15 connector from the clearance warning indicator.

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

      Voltage
      Tester connection (Symbols) Condition Specified condition H15-7 (BD) - Body ground Ignition switch ON 10 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. INSPECT CLEARANCE WARNING INDICATOR

   
   

   1. 

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

      Resistance
      Tester connection (Symbols) Condition Specified condition H15-7 (BD) - H15-12 (SK) Clearance sonar main switch OFF 10 kΩ or higher H15-7 (BD) - H15-12 (SK) Clearance sonar main switch ON Below 1 Ω

   
   

   NG

   REPLACE CLEARANCE WARNING INDICATOR

   OK

   REPAIR OR REPLACE HARNESS OR CONNECTOR (CLEARANCE WARNING ECU - CLEARANCE WARNING INDICATOR)