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 power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El
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:
Transmission Fluid Temperature Sensor "C" Voltage Out of Range (P274A1C,P274A1F)
DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs are stored when the transmission fluid temperature sensor output is abnormal. The cause of this malfunction may be one of the following: Transmission fluid temperature sensor malfunction
Internal transmission fluid temperature sensor malfunction
Op
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY (a) for RH Side (1) Operate the windshield wiper motor assembly. (2) Stop the windshield wiper motor assembly operation. (3) Check the automatic stop (park) position. HINT: After the front wiper motor is stopped, check the
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