Toyota Sienna Service Manual: Light control relay
ON-VEHICLE INSPECTION
1. LIGHT CONTROL RELAY
- Inspect relay resistance.
Resistance
Fog light relay
ON-VEHICLE INSPECTION
1. FOG LIGHT RELAY
Inspect relay resistance.
Resistance
...
BRK relay
ON-VEHICLE INSPECTION
1. BRK RELAY
Inspect relay resistance.
Resistance
...
Other materials:
General information
A large number of ECU controlled systems are used in the
SIENNA. In general, ECU controlled systems are considered
to be very intricate, requiring a high level of technical
knowledge to troubleshoot. However, most problem checking
procedures only involve inspecting the ECU controlled
system's c ...
Distance Control ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the distance control ECU. The distance
control ECU determines
information about the vehicle in front based on data from the laser sensor, and
then decides how much
acceleration and/or deceleration is needed to maintain the set distance. The
...
Turbine Speed Sensor Circuit No Signal
DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the
input turbine speed signal
(NT) with the counter gear speed sensor signal (NC), the ECM detects the shift
timing of the gears and
appropriately controls the engine torque and hydraulic pressure accor ...
