HINT:
1. REMOVE FRONT SEAT ASSEMBLY RH
HINT: See page SE-40.
2. REMOVE FRONT DOOR SCUFF PLATE RH
3. REMOVE COWL SIDE TRIM BOARD RH
(a) Remove the nut and cowl side trim board plate RH.
4. REMOVE YAW RATE AND DECELERATION SENSOR

(a) Disconnect the yawrate sensor connector.
(b) Remove the 2 bolts and yawrate sensor.
Yaw rate and deceleration sensor
InstallationInstallation
1. Install thermostat
(a) Install a new gasket to the thermostat.
(b) Install the thermostat with the jiggle valve facing up.
Hint:
the jiggle valve may be set within 10° on either side
of the prescribed position.
2. INSTALL WATER INLET
(a) Install the water inlet with the 2 nuts . ...
Hazard warning switch
INSPECTION
1. HAZARD WARNING SIGNAL SWITCH ASSEMBLY
Check that there is resistance between the
terminals at each switch position as shown in the
chart.
Resistance
Inspect illumination operation.
Connect the positive (+) lead from the battery
to the termina ...
Symptom confirmation and diagnostic trouble code
HINT:
The diagnostic system in the SIENNA has various
functions.
The first function is the Diagnostic Trouble Code
(DTC) check. A DTC is a code stored in the ECU
memory whenever a malfunction in the signal circuits
to the ECU occurs. In a DTC check, a previous
malfunction's DTC can be ...