Toyota Sienna Service Manual: 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 J/B.
- Measure the resistance.
Standard resistance: Below 1 Ω
2 CHECK INSTRUMENT PANEL J/B ASSEMBLY (POWER SOURCE)
- Disconnect the 1C J/B connector.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
3 CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BODY GROUND)
- Disconnect the 1K and 1L J/B connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE INSTRUMENT PANEL J/B ASSEMBLY
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 continuou ...
Engine hood courtesy
switch
Inspection
1. INSPECT ENGINE HOOD COURTESY SWITCH
Measure the resistance according to the value(s) in
the table below.
Standard resistance
If the result is not as specified, r ...
Other materials:
Operation check
NOTICE:
Inspection should be started after conforming that the
items listed in the "CUSTOMIZE PARAMETER" for the
power slide door system have defaulted to the initial
settings.
1. CHECK OPENING OPERATION
Conditions necessary for the power slide door to
open:
Power slid ...
Data list / active test
1. DATA LIST
HINT:
Using the intelligent tester to read the Data List allows
the values or states of switches, sensors, actuators and
other items to be read without removing any parts. This
non-intrusive inspection can be very useful because
intermittent conditions or signals may be discovered ...
Front stabilizer bar (for 4wd)
COMPONENTS
...
