2003 LEXUS LS430 Factory Repair Manual

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Page 2577 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 47: Identifying Stop Lamp Switch Assy Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. OK: Go To Next Step. 3.CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH - BATTERY) a. Measure the vo

Page 2578 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 48: Identifying Stop Lamp Switch Assy Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go To Next Step. 4.INSPECT ECM a. Reconnect the

Page 2579 of 4500

LEXUS LS430 2003 Factory Repair Manual Result: RESULT DETAIL B: Go to step 5 C: REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LAMP SWITCH - ECM) DepressedE3-8 (ST1-) - Body groundBelow 1 V ReleasedE3-8 (ST1-) - Body ground10 to 14V OKA

Page 2580 of 4500

LEXUS LS430 2003 Factory Repair Manual <0029004c004a001100030017001c001d00030027004c00560046005200510051004800460057004c0051004a000300280015000300240051004700030028001600030026005200510051004800460057005200550056000300290055005200500003002

Page 2581 of 4500

LEXUS LS430 2003 Factory Repair Manual Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. A: REPLACE ECM (SEE REPLACEMENT ) 5.INSPECT DRIVER SIDE J/B a. Measure the voltage according to the value(s) in the table below. Fig. 50: Identifying

Page 2582 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVER SIDE J/B ECU - ECM) 6.INSPECT DRIVER SIDE J/B a. Measure the voltage according to the value(s) in the table below. Fig. 51: Identifying Driver Sid

Page 2583 of 4500

LEXUS LS430 2003 Factory Repair Manual CIRCUIT DESCRIPTION This DTC indicates a malfunction in the ECM. HINT: The ECM receives signals from each sensor to control all the functions of the cruise control with the microcomputer. When a

Page 2584 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 53: DTC P1615 And U1101 Problem Symptom Diagnostic Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE HINT: This circuit uses CAN for communication. Therefore, one or mor
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