CRUISE CONTROL SYSTEM
8-95
6 Check the fuse. (signaling
system fuse, brake light fuse)
Abnormality → Replace the
fuse. (signaling system fuse,
brake light fuse)
Turn the main switch to “ON”.
Operate the brake pedal.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 7.
7 Wire harness continuity. Open or short circuit → Re-
place the wire harness.
Between battery and main
switch coupler.
red-red
Between main switch coupler
and fuse box 1 (signaling
system fuse).
brown/blue–brown/blue
Between fuse box 1 and
brake light fuse.
brown–brown
Between brake light fuse and
rear brake light switch cou-
pler.
green/yellow–green/yellow
Between rear brake light
switch coupler and brake
switch relay coupler.
green/white–green/white
Between brake switch relay
coupler and joint coupler.
black–black
Between joint coupler and
negative battery sub-wire
harness coupler.
black–black
Between negative battery
sub-wire harness coupler
and engine ground.
black–black
Turn the main switch to “ON”.
Operate the brake pedal.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 8.
8 Defective rear brake light
switch.
Replace the rear brake light
switch.
Turn the main switch to “ON”.
Operate the brake pedal.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 9.
9 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-174.
Fault code No. 90
Item
A Front brake light switch: open or short circuit is detected.
B Rear brake light switch: open or short circuit is detected.
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