2003 LEXUS LS430 Factory Repair Manual

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Page 41 of 4500

LEXUS LS430 2003 Factory Repair Manual a. If the skid control ECU detects a malfunction, the ABS, BRAKE, VSC warning (Multi-information display) and TRAC OFF indicator light will come on in accordance with the trouble area to warn the dr

Page 42 of 4500

LEXUS LS430 2003 Factory Repair Manual xcirc: Light ON -: Light OFF The DTCs are simultaneously stored in memory. The DTCs can be read by connecting the hand- held tester. This system has a sensor signal check function (Test Mode). T

Page 43 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 31: Connecting Hand-Held Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Checking DTCs. 1. Connect the hand-held tester to the DLC3. 2. Turn the ignition switch to the ON pos

Page 44 of 4500

LEXUS LS430 2003 Factory Repair Manual HINT: If no code appears, inspect the diagnostic circuit or ABS warning light circuit. Fig. 32: Identifying DLC3 Connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. TROUBLE AREA DESC

Page 45 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 33: Blinking Patterns For Normal System Code And Trouble Codes Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. b. Checking DTCs of VSC system. 1. Using SST, connect terminals TC and CG of the DL

Page 46 of 4500

LEXUS LS430 2003 Factory Repair Manual SST 09843-18040 2. Turn the ignition switch to the ON position. 3. Read the DTC from multi-information display on the combination meter. HINT: At this time, "VSC OK", is displayed when

Page 47 of 4500

LEXUS LS430 2003 Factory Repair Manual 3.CLEAR DTC (USING HAND-HELD TESTER) a. Clearing the DTCs. 1. Connect the hand-held tester to the DLC3. 2. Turn the ignition switch to the ON position. 3. Operate the hand-held tester to clear t

Page 48 of 4500

LEXUS LS430 2003 Factory Repair Manual SST 09843-18040 Fig. 36: Identifying DLC3 Connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3. Clear the DTCs stored in the ECU by depressing the brake pedal 8 times or more within
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