Headlight Cleaner Motor and Relay Circuit [08/2015 - 08/2019]: Procedure

1. Using the Techstream, perform the Active Test (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Head Light Cleaner	Low beam headlight state signal	ON/OFF	-

   HINT: 

   The headlight cleaner system operates when the windshield wiper washer switch assembly (windshield wiper switch) is turned on for the first time. After that, the headlight cleaner system cannot be operated with the windshield wiper switch assembly (windshield wiper switch) until the engine switch is turned off and then turned on (IG).

   OK

   Headlight cleaner operates.

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

NG 

See step  2

1. Remove the headlight cleaner motor and pump assembly (Refer to REMOVAL [08/2015 - 08/2019] ).
2. Inspect the headlight cleaner motor and pump assembly (Refer to INSPECTION [08/2015 - ] ).

Result: 

NG 

REPLACE HEADLIGHT CLEANER CONTROL RELAY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

OK 

See step  3

1. Disconnect the headlight cleaner motor and pump assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A31-2 - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Headlight Cleaner Motor and Pump Assembly)

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the headlight cleaner control relay connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A32-3 (IG) - Body ground	Engine switch on (IG)	11 to 14 V
   A32-3 (IG) - Body ground	Engine switch off	Below 1 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A32-4 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Headlight Cleaner Control Relay)

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Disconnect the A31 headlight cleaner motor and pump assembly connector.
2. Disconnect the A32 headlight cleaner control relay connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A31-1 - A32-6 (PB)	Always	Below 1 Ω
   A31-1 or A32-6 (PB) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE HEADLIGHT CLEANER CONTROL RELAY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR