2003 LEXUS LS430 Factory Repair Manual

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Page 1993 of 4500

LEXUS LS430 2003 Factory Repair Manual B: Go to step 6 A: Go to next step 5.OVERALL ANALYSIS AND TROUBLESHOOTING a. DATA LIST/ACTIVE TEST (See DATA LIST/ACTIVE TEST ) 1. Inspection with the hand-held tester (ACTIVE TEST) b. Termin

Page 1994 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 3: Identifying Customer Problem Analysis Check Sheet Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 4: Problem Symptoms Table Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 1.CHECK A/C CONTRO

Page 1995 of 4500

LEXUS LS430 2003 Factory Repair Manual If the result is not as specified, there may be a malfunction on the wire harness side. c. Reconnect the A11 ECU connector. d. Measure the voltage of the connector. Standard: A/C CONTROL ASSY -

Page 1996 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 6: Identifying DLC3 Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. DLC3 REFERENCE TABLE HINT: Connect the cable of the hand-held tester (with CAN VIM) to the DLC3, turn the ignition s

Page 1997 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 7: Connecting Hand-Held Tester To DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3.INSPECT BATTERY VOLTAGE Standard: 11 to 14 V If voltage is below 11 V, recharge the battery before proce

Page 1998 of 4500

LEXUS LS430 2003 Factory Repair Manual c. Perform the ACTIVE TEST by following the directions on the tester screen. A/C control assy: A/C CONTROL ASSY - REFERENCE TABLE CIRCUIT DESCRIPTION When the defogger switch is turned on, a rear

Page 1999 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 8: Rear Window Defogger System - Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE 1.INSPECT FUSE a. Select the ACTIVE TEST, use the han d-held tester to genera

Page 2000 of 4500

LEXUS LS430 2003 Factory Repair Manual that the A/C control is turned on and off. FUSE - REFERENCE TABLE OK: When OFF is selected on the hand-held tester, the rear defogger should turn off. When ON is selected on the hand-held tester
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