Toyota Sienna Service Manual: Engine Hood Courtesy Switch Circuit
DESCRIPTION
The engine hood courtesy switch is built in the engine hood lock assembly. The switch turns on when the engine hood is opened and turns off when the engine hood is closed.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT ENGINE HOOD COURTESY SWITCH
- Remove the courtesy switch.
- Disconnect the E3 switch connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - ENGINE HOOD COURTESY SWITCH)
- Disconnect the B8 ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE MULTIPLEX NETWORK BODY ECU
Terminals of ECU
1. CHECK INSTRUMENT PANEL J/B ASSEMBLY
(MULTIPLEX NETWORK BODY ECU)
Disconnect the B6, B7 and B9 ECU connectors.
Disconnect the 1A, 1C, 1L and 1K J/B connectors.
Measure t ...
Security Horn Circuit
DESCRIPTION
During the alarm sounding state, the relay in the ECU turns on and off in a
cycle of approximately 0.2
seconds, causing the security horn to sound.
WIRING DIAGRAM
INSPECTION PROC ...
Other materials:
Precaution
1. REMOVAL AND INSTALLATION TIRE PRESSURE
WARNING VALVE AND TRANSMITTER
(a) When installing a tire, make sure that the tire
pressure warning valve and transmitter does not
interfere with the tire bead in order to prevent
damage to the tire pressure warning valve and
transmitter.
(b) After c ...
Third outside seats
To use
Pull the head restraints up.
To fold
Press the button
Removing the head restraints
Front and second outside seats
Pull the head restraint up while pressing
the lock release button.
Second center* and third center seats
Pull the head restraint up while pressi ...
Knock Sensor 1 Circuit Low Input
DESCRIPTION
A flat type knock sensor (non-resonant type) has a structure that can detect
vibrations over a wide band of
frequencies: between approximately 6 kHz and 15 kHz.
Knock sensors are fitted onto the engine block to detect engine knocking.
The knock sensor contains a piezoelectr ...
