DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the horns to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
*1: w/ Smart Key System
PROCEDURE
1. |
INSPECT HORNS |
(a) Press the horn switch and check if the horns sound.
Result |
Proceed to |
---|---|
Horns sound |
A |
Horns do not sound |
B |
B | ![]() |
GO TO HORN SYSTEM |
|
2. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the main body ECU (multiplex network body ECU).
Click here
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(b) Disconnect the instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3F-27 - MB-28 (HORN) |
Always |
Below 1 Ω |
OK | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
Toyota CH-R Service Manual > Power Window Control System: Power Window Switch Malfunction (B2312)
DESCRIPTION
The power window regulator motor assemblies are operated by the multiplex network
master switch assembly, power window regulator switch assembly or rear power window
regulator switch assemblies. The power window regulator motor assemblies have motor,
regulator and ECU functions.
...
Toyota CH-R Service Manual > Combination Meter: Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration)
that must be performed after parts are removed, installed, or replaced during the
combination meter removal/installation are shown below.
Necessary Procedure After Parts Removed ...