Lexus ES: Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with the diagnostic system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the multiplex tilt and telescopic ECU.
The multiplex tilt and telescopic ECU stores DTCs when the ECU detects a malfunction in itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables the DTCs to be cleared, several actuators to be activated, and the freeze frame data and various forms of steering data to be checked.
CHECK DLC3
(a) Check the DLC3.
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Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem
Fail-safe Chart
FAIL-SAFE CHART HINT: If the power source voltage to the multiplex tilt and telescopic ECU returns to normal within 10 seconds during tilt or telescopic operation, the operation will be resumed. If it
SEE MORE:
Back-up Light Circuit
DESCRIPTION The hybrid vehicle control ECU controls the back-up lights via the BKUP LP relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
Before replacing the hybrid vehicle control ECU, refer t
AUTO Power Retract Mirrors do not operate
DESCRIPTION The outer mirror switch assembly sends the retractable outer mirror switch signal to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) sends the auto retract/return signal to the outer mirror control ECU assemblies via CAN communication, which
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