Toyota Sienna Service Manual: Problem symptoms table
Proceed to the reference page shown in the table below for each malfunction symptom and troubleshoot each circuit.
HINT: Troubleshooting of the theft deterrent system is based on the premise that the door lock control system and the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the door lock control system and the wireless door lock control system are operating normally.
Theft deterrent system
Customize parameters
HINT:
The following items can be customized.
NOTICE:
After confirming whether the items requested by the
customer are applicable or not for customization,
perform customizing operation ...
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 ...
Other materials:
On-vehicle inspection
1. CHECK AUTO SLIDE-OPEN / CLOSE FUNCTION
Check that the sliding roof switch can operate the
sliding roof glass as follows while the tilt-up / DOWN
function is not operating.
Standard
HINT:
The sliding roof stops partway when the sliding roof
switch is pushed on either side during AU ...
Summary of the Blind Spot Monitor
The Blind Spot Monitor is a system that has 2 functions:
The Blind Spot Monitor function
Assists the driver in making the decision when changing lanes
The Rear Cross Traffic Alert function
Assists the driver when backing up
These functions use same sensors.
BSM main switch
Pre ...
Unlock Warning Switch Circuit
DESCRIPTION
The unlock warning switch detects if the key is in the ignition key cylinder.
The unlock warning switch turns on when the key is inserted into the ignition
key cylinder and turns off
when the key is removed from the cylinder.
The body ECU is connected to the unlock warning swit ...
