Lexus ES: System Description
Lexus ES (XZ10) Service Manual / Vehicle Exterior / Vehicle Proximity Notification System / Vehicle Proximity Notification System / System Description
SYSTEM DESCRIPTION
Vehicle Proximity Notification System
(a) When the vehicle is being driven quietly using the motor only, the vehicle proximity notification system outputs a warning sound from the vehicle approaching speaker assembly to inform pedestrians, cyclists etc., of the approach of the vehicle.
(b) The warning sound is output by the vehicle approaching speaker assembly at a volume level that will not be perceived as noise. Also the pitch of the sound changes in accordance with vehicle speed so that the sound reflects vehicle deceleration and acceleration.
(c) Vehicle proximity notification system operation automatically stops when the vehicle is stopped, the engine starts or the vehicle is driven at 25 km/h (16 mph) or more.
READ NEXT:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the vehicle proximity notification system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
Operation Check
OPERATION CHECK VEHICLE PROXIMITY NOTIFICATION SYSTEM OPERATION CHECK (a) System operation check (vehicle stopped) (1) Apply the parking brake. (2) Turn the power switch on (IG). (3) With the brake pe
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) (a) Inspect the "Normal" or "Normal/Custom" mode switch: (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition
Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) (P012800,P012807)
DESCRIPTION The ECM uses the engine coolant temperature sensor, installed to the water outlet, and the No. 2 engine coolant temperature sensor, installed to the radiator pipe assembly, to monitor the operation of the thermostat. DTC No. Detection Item DTC Detection Condition Trouble Area
© 2016-2024 Copyright www.lexguide.net
