Toyota Sienna Service Manual: Low pitched horn
COMPONENTS
REMOVAL
1. REMOVE FRONT BUMPER COVER ET-3
2. REMOVE LOW PITCHED HORN
- Disconnect the connector.
- Remove the bolt and horn.
INSPECTION
1. INSPECT LOW PITCHED HORN
- Apply battery voltage and check operation of the horn, as shown in the table.
Standard
INSTALLATION
1. INSTALL LOW PITCHED HORN
- Place the stay onto the baffle part of the radiator
support upper and then install the horn with the bolt.
Torque: 20 N*m (199 kgf*cm, 15 ft.*lbf)
- Connect the connector.
2. INSTALL FRONT BUMPER COVER
Horn relay
INSPECTION
1. INSPECT HORN RELAY
Remove the horn relay from the instrument panel J/
B.
Measure the horn relay continuity.
Standard
...
High pitched horn
COMPONENTS
REMOVAL
1. REMOVE FRONT BUMPER COVER
2. REMOVE HIGH PITCHED HORN
Disconnect the connector.
Remove the bolt and horn.
INSPECTION
1. INSPECT HIGH PITCHED HORN
...
Other materials:
If a warning message is displayed
If a warning message is shown on the multi-information display,
stay calm and perform the following actions:
Master warning light
The master warning light also comes on or flashes in order to indicate that
a message is currently being displayed on the multi-information display.
Multi- ...
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to the ON position, the battery voltage is
applied to terminal IGSW of
the ECM. The ECM MREL output signal causes a current to flow to the coil,
closing the contacts of the EFI
relay and supplying power to terminal +B of the ECM.
If the igniti ...
DTC check / clear
NOTICE:
All the stored DTCs and freeze frame data are erased if:
the ECM is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned from ON
to ACC or off while in check mode.
Before changing modes, always check and make a note
of any DTCs and fr ...