Inspection Procedure

Standard: Wiper function is normal. 

1. NG: GO TO WIPER AND WASHER SYSTEM (See  PROBLEM SYMPTOMS TABLE  ) 
2. OK: GO TO NEXT STEP. 

1. Check for an open or short circuit in harness and connector between the distance control ECU and the auto wiper ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

1. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
2. OK: GO TO NEXT STEP. 

1. Remove the cruise control ECU (distance control ECU) with the connector.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between terminal WIP2 (D2-2) and WASH (D2-3) of cruise control ECU (distance control ECU), when combination switch is operated.

   Standard: 

   CRUISE CONTROL ECU (DISTANCE CONTROL ECU) CONNECTOR TERMINALS RESISTANCE
   
   

   Switch	Position	Specified value
   Wiper Switch	OFF	Below 1 V
   Wiper Switch	HI	10 to 14 V
   Washer Switch	OFF	10 to 14 V
   Washer Switch	ON	Below 1 V

   Fig 1: Identifying Cruise Control ECU (Distance Control ECU) Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE CRUISE CONTROL ECU ASSY (See  CRUISE CONTROL ECU ASSY  ) 
2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON  PROBLEM SYMPTOMS TABLE