Owners of models equipped with a navigation system should refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL�.
Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular phone is being used inside or close to the vehicle while the audio system is operating.
| NOTICE To prevent battery discharge Do not leave the audio system on longer than necessary when the engine is off. To avoid damaging the audio system Take care not to spill drinks or other fluids on the audio system. |
Basic Operations
Audio systemMIL Circuit
DESCRIPTION
The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions
detected by the ECM.
When the ignition switch is turned to the ON position, power is supplied to the
MIL circuit, and the ECM
provides the circuit ground which illuminates the MIL.
The MIL operation ...
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 ...
Heater relay (for rear air conditioning system)
ON-VEHICLE INSPECTION
1. INSPECT REAR HEATER RELAY
(a) Remove the rear heater relay.
(b) Measure the resistance according to the value(s) in
the table below.
Standard resistance
If the resistance is not as specified, replace the rear
heater relay. ...