Toyota Sienna Service Manual: Engine immobiliser
Security horn assembly
INSPECTION
1. INSPECT SECURITY HORN ASSEMBLY
Check operation of the horn.
Standard
If the result is not a ...
Engine immobiliser system
PARTS LOCATION
SYSTEM DESCRIPTION
The engine immobiliser system has been designed to prevent
the vehicle from being stolen. This system uses a
transponder key ECU that stores the key code of t ...
Other materials:
Diagnostic trouble code chart
Look for output Diagnostic Trouble Codes (DTCs) (from the
DTC checks) in the appropriate section's Diagnostic Trouble
Code Chart. Use the chart to determine the trouble area and
the proper inspection procedure. A description of each of the
chart's columns is shown in the table below.
Ite ...
Voice Recognition Difficulty
INSPECTION PROCEDURE
1 CHECK CONDITION
Check if the system's voice recognition level is low by
using only one particular voice.
OK:
System's voice recognition level is low with any
voice.
2 CHECK MAP DISC
Check that the map disc is not deformed or cracked.
OK:
No deformation ...
Yaw rate sensor check (when using sst check wire)
(a) Check the zero point voltage of the yaw rate sensor.
(1) Keep the vehicle in a stationary condition on a
level surface for 1 second or more.
(b) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 3 mph (5
...
