Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3
Turn the engine switch on (IG)
Turn the Techstream on
Enter the following menus: Body Electrical / Body No 5 / Active Test

Check the operation

Body No. 5 (Front Controller)

DIAGNOSTIC NOTE REFERENCE CHART

Tester Display	Test Part	Control Range	Diagnostic Note
Washer Motor Operation	Washer motor	OFF/ON	-

OK: Washer motor operates.

NG: Go to step 2

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )

INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY
HINT

The following check should be performed with the windshield washer motor and pump assembly installed to the washer jar
1. Fill the washer jar with washer fluid
2. Connect a positive (+) battery lead to terminal 1 of the washer motor, and a negative (-) battery lead to terminal 2
3. Check that washer fluid flows from the washer jar
  OK: Washer fluid is pumped from the washer jar.
NG: REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY (See WASHER MOTOR )

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY - BODY GROUND)

Disconnect the A4 windshield washer motor and pump assembly connector.

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

Standard Resistance

TESTER CONNECTION TESTER CONNECTION CHART

Tester Connection	Condition	Specified Condition
A4-2 - Body ground	Always	Below 1 Ω

Fig 2: Identifying A4 Windshield Washer Motor And Pump Assembly Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS OR CONNECTOR (FRONT CONTROLLER - WINDSHIELD WIPER MOTOR AND PUMP ASSEMBLY)

Disconnect the 2F front controller connector.

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

Standard Resistance

TESTER CONNECTION TESTER CONNECTION CHART

Tester Connection	Condition	Specified Condition
A4-1 - 2F-4	Always	Below 1 Ω
A4-1 - Body ground	Always	10 kΩ or higher

Fig 3: Identifying 2F Front Controller Connector Terminal

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (BATTERY - FRONT CONTROLLER)

Disconnect the 2E front controller connector

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

Standard Voltage

TESTER CONNECTION TESTER CONNECTION CHART

Tester Connection	Condition	Specified Condition
2E-1 - Body ground	Always	11 to 14 V

Fig 4: Identifying 2E Front Controller Connector Terminal

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE FRONT CONTROLLER (MULTIPLEX NETWORK BODY ECU)