Toyota Sienna Service Manual: Security Indicator Light Circuit
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.
The multiplex network body ECU causes the security indicator to light up or blink only during the arming preparation state and alarm sounding states.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT COMBINATION METER ASSEMBLY
- Remove the combination meter assembly.
- Apply battery voltage between the terminals of the indicator, and check the lighting condition of the security indicator.
Standard
NOTICE:
- If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator will not light up.
- Voltage of more than 12 V will damage the security indicator
- If the voltage is too low, the security indicator will not light up.
2 CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MULTIPLEX NETWORK BODY ECU)
- Disconnect the B6 ECU connector.
- Disconnect the C10 meter connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK HARNESS AND CONNECTOR (COMBINATION METER - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE MULTIPLEX NETWORK BODY ECU
Ignition Switch Circuit
DESCRIPTION
When the ignition switch is turned to the ON position, battery positive
voltage is applied to terminal IG of
the ECU. When battery positive voltage is applied to terminal IG of the ECU ...
ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the theft deterrent (warning) ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU-B)
Remove the ECU-B fuse from the engine room ...
Other materials:
Folding down the third seats (manual seats)
Before folding the third seats
Fold the outside head
restraints and lower the center
head restraint to the lowest
position , and
stow the seat belt buckles.
Stow the center seat belt.
Folding down the third seatbacks
Pull the “TO FOLD/LIFT SEATBACK”
strap a
Return ...
Installation
1. INSTALL SPIRAL CABLE
Check that the front wheels are facing straight
ahead.
Set the turn signal switch to the neutral position.
NOTICE:
If it is not in the neutral position, the pin of the
turn signal switch may snap.
Install the spiral cable.
NOTICE:
...
On-vehicle inspection
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
manual for further details.
2. INSPECT ACTUATOR MOTOR ...
