RAIN SENSOR ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT RAIN SENSOR

   
   

   1. for LHD

      
      
      1. 

         Text in Illustration

         *a	Front view of wire harness connector (to Rain Sensor)

         Disconnect the T1 rain sensor connector.

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

         Standard Voltage
         Tester Connection Condition Specified Condition T1-4 (SIG) - T1-2 (ES) Engine switch on (IG) 11 to 14 V

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

         Standard Resistance
         Tester Connection Condition Specified Condition T1-2 (ES) - Body ground Always Below 1 Ω

         If the result is not as specified, repair or replace the harness or connector.

      4. 

         Text in Illustration

         *a	Component with harness connected (Rain Sensor)

         Reconnect the T1 rain sensor connector.

      5. Connect an oscilloscope to the rain sensor connector.

      6. Check for pulses.

         OK
         Tester Connection Condition Specified Condition T1-1 (MPX) - T1-2 (ES) Engine switch on (IG) Pulse generation

         If the result is not as specified, replace the rain sensor.

   2. for RHD, w/o Pre-Crash Safety System

      
      
      1. 

         Text in Illustration

         *a	Front view of wire harness connector (to Rain Sensor)

         Disconnect the T14 rain sensor connector.

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

         Standard Voltage
         Tester Connection Condition Specified Condition T14-4 (SIG) - T14-2 (ES) Engine switch on (IG) 11 to 14 V

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

         Standard Resistance
         Tester Connection Condition Specified Condition T14-2 (ES) - Body ground Always Below 1 Ω

         If the result is not as specified, repair or replace the harness or connector.

      4. 

         Text in Illustration

         *a	Component with harness connected (Rain Sensor)

         Reconnect the T14 rain sensor connector.

      5. Connect an oscilloscope to the rain sensor connector.

      6. Check for pulses.

         OK
         Tester Connection Condition Specified Condition T14-1 (MPX) - T14-2 (ES) Engine switch on (IG) Pulse generation

         If the result is not as specified, replace the rain sensor.

   3. for RHD, w/ Pre-Crash Safety System

      
      
      1. 

         Text in Illustration

         *a	Front view of wire harness connector (to Rain Sensor)

         Disconnect the T16 rain sensor connector.

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

         Standard Voltage
         Tester Connection Condition Specified Condition T16-4 (SIG) - T16-2 (ES) Engine switch on (IG) 11 to 14 V

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

         Standard Resistance
         Tester Connection Condition Specified Condition T16-2 (ES) - Body ground Always Below 1 Ω

         If the result is not as specified, repair or replace the harness or connector.

      4. 

         Text in Illustration

         *a	Component with harness connected (Rain Sensor)

         Reconnect the T16 rain sensor connector.

      5. Connect an oscilloscope to the rain sensor connector.

      6. Check for pulses.

         OK
         Tester Connection Condition Specified Condition T16-1 (MPX) - T16-2 (ES) Engine switch on (IG) Pulse generation

         If the result is not as specified, replace the rain sensor.