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. 3 / Active Test.
- Check the operation
Body No. 3 (Main body ECU LH)
ACTIVE TEST - BODY NO. 3 (MAIN BODY ECU LH)Tester Display Test Part Control Range Diagnostic Note Exterior Foot Light Operation Door mirror foot lights ON/OFF - OK: Door mirror foot lights come on.
HINT:
The door mirror foot lights RH and LH share the same power source If either of the lights does not come on, there may be a problem in the part of the circuit related to that light. If this occurs, inspect the related part of the circuit.
NG: Go to step 2
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - BATTERY)
- Disconnect the Q1 main body ECU LH connector
- Measure the voltage according to the value (s) in the table
Standard Voltage
STANDARD VOLTAGE SPECIFICATIONTester Connection Condition Specified Condition Q1-4 (LCTY) -Body ground Always 11 to 14 V
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH)