12 LS430 − OUTLINE OF NEW FEATURES 24. LEXUS Link System The following changes have been made to the LEXUS link system. 25. Cruise Control System Conventional Type Cruise Control System The following changes have been made to the system control. Service Tip The diagnosis communication has been changed from serial communication to CAN communication. As a result, a dedicated adapter [CAN-VIM (Vehicle Interface Module)] must be attached to the conventional hand-held tester in order to read the DTC of the ECM. For details, see the 2004 LEXUS LS430 Repair Manual (Pub. No. RM1048U). Item Outline Overhead Console Indicator light in the overhead console has been changed from one to two.
Mayday ECU The airbag deployment signal, which is input by the airbag sensor assembly into the mayday ECU, has been changed from a single circuit to a dual circuit, as a measure against wiring damage sustained during an impact. For details, see page 181. Diagnosis DTC has been changed from one-digit to two-digit. DTC output method has been changed. For details, see the 2004 LEXUS LS430 Repair Manual (Pub. No. RM1049U). Control Outline Set Control A portion of the set control conditions has been made to support the A761E 6-speed automatic transmission. While the shift lever is in position D or S mode, and the shift range is in 4th, 5th, or 6th.
Manual Cancel Control A portion of the manual cancel control conditions has been made to support the A761E 6-speed automatic transmission. D position circuit in Park/Neutral position switch OFF signal (Shift the transmission shift lever from D, 6, 5 or 4 to N, 3, 2 or 1) When 3rd, 2nd, 1st range is selected in S mode position. Diagnosis The following changes have been made to the 5-digit DTC (Diagnostic Trouble Codes). DTC No. (5 digit) DTC No.
Detection Item ’04 LS430 ’03 LS430 (2 digit) P0500 21 Vehicle speed sensor circuit open P0500 P0503 23 Vehicle speed signal abnormal P0571 P1520 52 Stop light switch circuit (open or short) Stop light switch input signal faulty P0607 P1566 54 Cancel circuit faulty DTC No. (5 digit) DTC No. (2 digit) Detection Item ’04 LS430 ’03 LS430 P0500 P0500 21 Vehicle speed sensor circuit open P0503 23 Vehicle speed signal abnormal P0571 P1520 52 Stop light switch circuit (open or short) P0607 P1566 54 Stop light switch input signal faulty Cancel circuit faulty