Honda 2004 Odyssey Service Manual page 1787

Safety Indicator System
Brake Light Failure Sensor Test
1. First make sure the brake lights come on when the
brake pedal is pressed.
• If all the brake lights come on, go to step 2.
• If one of the brake lights does not come on, check
whether the bulb is blown. If the bulb is OK, go to
step 2.
• If none of the brake lights come on, check the
brake light circuit (see page 22-121).
2. Open the tailgate, and remove the left rear side
trim panel (see page 20-60).
BLK
WHT/GRN
3. Make sure the BRAKE LAMP light in the safety
indicator does not come on and stay on when the
6P connector is disconnected and the ignition
switch is turned from OFF to engine running.
• If the BRAKE LAMP light comes on, check for:
– a short to ground between the No. 11 terminal
of the gauge assembly connector A (14P) and
the No. 4 terminal of the failure sensor.
– a faulty safety indicator circuit (printed circuit
board) in the gauge assembly.
• If the BRAKE LAMP light does not come on, go to
step 4.
22-108
GRN
WHT/BLK
Wire side of
female terminals
YEL
4. Reconnect the 6P connector. Check the voltage to
ground on No. 5 terminal (YEL).
• If there is 12 V, go to step 5.
• If there is 0 V, check for:
– an open in the YEL wire.
– a blown fuse.
5. Reconnect the 6P connector. Make sure the BRAKE
LAMP light in the safety indicator comes on and
goes off when the No. 3 terminal of the 6P
connector is grounded, the brake pedal is pressed,
and the ignition switch is turned from OFF to
engine running.
• If the BRAKE LAMP light does not go off, replace
the brake failure sensor.
• If the BRAKE LAMP light goes off, check for:
– a poor ground (G 552, G582).
– an open in the BLK wire.