PREPARATION
Special Service Tools

Commercial Service Tools

PrecautionSignal buffer system
System Diagram
System Description
OUTLINE
BCM has the signal transmission function that outputs/transmits each
input/received signal to each unit.
Signal transmission function list
Signal name
Input
Output
Description
Ignition switch ON si ...
System temporarily unavailable
The following are conditions in which the ICC
system may be temporarily unavailable. In these
instances, the ICC system may not cancel and
may not be able to maintain the selected following
distance from the vehicle ahead.
Condition A
Under the following conditions, the ICC system is
auto ...
Trunk room lamp circuit
Description
Controls the trunk room lamp (ground side) to turn the trunk room lamp ON and
OFF.
Component Function Check
CAUTION: Before performing the diagnosis,
check that the following is normal.
Battery saver output/power supply
Trunk room lamp bulb
1.CHECK TRUNK ROOM LAMP OPERATI ...