Toyota Camry Manual page 536

INSPECTION PROCEDURE
Check operation of brake warning light.
Check that the brake warning light in the instrument panel comes on when the parking brake is
operating with the engine running, and the light goes off when the parking brake is not operating.
Input signal check.
Check voltage between terminal PKB of cruise control ECU connector and
body ground.
Check for open in harness and connector between cruise control ECU
and brake warning light. (See page IN–31)
Check and replace cruise control ECU.
BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM
Check brake warning light circuit (See
page BE–64).
1. See input signal check on page BE–172.
2. Check the indicator light when the parking
brake is operating.
The indicator light goes off when the parking
brake is operating.
Proceed to next circuit inspection shown on
matrix chart (See page BE–178).
Remove cruise control ECU with connectors still
connected.
1. Turn ignition switch ON.
2. Measure voltage between terminal PKB of
cruise control ECU connector and body
ground, when the parking brake lever is
operating.
Switch Position
ON (lever pulled)
OFF (lever released)
Proceed to next circuit inspection shown on
matrix chart (See page BE–178).
Repair or replace harness or connector.
BE–217
Voltage
Below 1 V
10 – 14 V