WIPER AND WASHER SYSTEM Washer Nozzle Heater Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives ambient air temperature information from the air conditioning amplifier assembly via CAN communication.

The washer nozzle heater assembly controls the main body ECU (multiplex network body ECU) and operates the washer nozzle heater assembly according to the ambient temperature.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. PERFORM ACTIVE TEST USING GTS

   
   

   1. Using the GTS, perform the Active Test.

      Click here

      Main Body

      Tester Display	Test Part	Control Range	Diagnostic Note
      Washer Nozzle Heater	Washer nozzle heater operation	ON/OFF	-

   2. 

      *a	Componet with harness connected Main Body ECU (Multiplex Network Body ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition G216-20 (WHTR) - Body ground Ignition switch ON, Active Test is not performed 11 to 14 V Ignition switch ON, Active Test is performed Below 1 V

      Result
      Proceed to OK NG

   
   

   NG

   CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BATTERY) Click here

   OK

2. INSPECT WASHER NOZZLE SUB-ASSEMBLY

   
   

   1. Remove the washer nozzle sub-assembly.

      Click here

   2. Inspect the washer nozzle sub-assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE WASHER NOZZLE SUB-ASSEMBLY Click here

   OK

3. INSPECT NO. 1 INTEGRATION RELAY

   
   

   1. Remove the No. 1 integration relay.

      Click here

      

      *a

      Component without harness connected (No. 1 Integration Relay)

      -

      -

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1T-9 - Battery negative (-) Battery not connected to 1S-1 and 1T-10 Below 1 V Battery positive (+) → 1S-1 Battery negative (-) → 1T-10 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   NG

   REPLACE NO. 1 INTEGRATION RELAY Click here

4. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BATTERY)

   
   
   1. 

      *a	Front view of wire harness connector (to No. 1 Integration Relay)

      Disconnect the No. 1 integration relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition 1S-1 - Body ground Always 11 to 14 V

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - NO. 1 INTEGRATION RELAY)

   
   

   1. Disconnect the G216 main body ECU (multiplex network body ECU) connector.

   2. Disconnect the 1T No. 1 integration relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition G216-20 (WHTR) - 1T-10 Always Below 1 Ω G216-20 (WHTR) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

6. INSPECT NO. 1 INTEGRATION RELAY

   
   

   1. Remove the No. 1 integration relay.

      Click here

      

      *a

      Component without harness connected (No. 1 Integration Relay)

      -

      -

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1T-9 - Battery negative (-) Battery not connected to 1S-1 and 1T-10 Below 1 V Battery positive (+) → 1S-1 Battery negative (-) → 1T-10 11 to 14 V

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

   NG

   REPLACE NO. 1 INTEGRATION RELAY Click here