Toyota Tundra 2005 Service - Repair - Maintenance page 2654

BR−78
BRAKE − HYDRAULIC BRAKE BOOSTER (w/ VSC)
(j) Inspect rear ABS solenoid (SRRH) operation.
HINT:
S
ON: Activate SRRH, depress the brake pedal, and then
check that the right rear wheel rotates.
S
OFF: Deactivate SRRH, depress the brake pedal, and
then check that the right rear wheel does not rotate.
(1) Select "SRRH" on the hand−held tester.
(2) Turn the "SRRH" on by the hand−held tester, then
depress the brake pedal with stable force.
(3) When the solenoid is on, check the right rear wheel
by rotating it by hand.
If the right rear wheel stops, replace the hydraulic brake boost-
er.
NOTICE:
When operating it continuously, set the interval of more
than 20 seconds.
HINT:
S
To protect the solenoids, the hand−held tester turns off
automatically 2 seconds after every solenoid has been
turned on.
S
When rotating the wheel fast, the fail−safe function is acti-
vated and judgement cannot be made properly.
So rotate the wheel as slowly as possible.
(4) When the solenoid is off, depress the brake pedal
again and check that the right rear wheel does not
rotate by hand.
If the right rear wheel rotates, replace the hydraulic brake boost-
er.