2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Condition: Ignition switch ON  
Fig. 26: Signal Waveform Graph (Waveform 1)
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Reference: waveform 2 
HINT: 
Terminal: LRRD - SGND  
Gauge set: 1 V/DIV,

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LEXUS LS430 2003  Factory Repair Manual Fig. 27: Signal Waveform Graph (Waveform 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
1.DIAGNOSIS FUNCTION 
a. The diagnosis function makes the master warning light and the multi-information disp

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LEXUS LS430 2003  Factory Repair Manual Fig. 28: Identifying CRUISE Main Indicator Light And Master Warning Light 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual Fig. 29: Identifying Blinking Pattern Of CRUISE Main Indicator Light 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
2.DESCRIPTION 
a. The ECM controls the dynamic laser cruise control system of the ve

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LEXUS LS430 2003  Factory Repair Manual Fig. 30: Identifying DLC3 Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
DLC3 CONNECTOR TERMINALS RESISTANCE 
HINT: 
If the displa
y shows "UNABLE TO CONNECT TO VEHICLE" wh

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LEXUS LS430 2003  Factory Repair Manual tester to the DLC3, turned the ignition switch to the ON position and operated the tester, there is a 
problem on either the vehicle side or the tool side. 
If communication is normal when the tool is

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LEXUS LS430 2003  Factory Repair Manual If a malfunction occurs in the vehicle speed sensors, the stop lamp switch, or other related parts during 
cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and blinks the CRU

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LEXUS LS430 2003  Factory Repair Manual Fig. 33: Connecting Hand-Held Tester To DLC3 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
1.Constant speed control mode and vehicle-to-vehicle distance control mode: 
If the following conditions are