Honda 2004 Odyssey Service Manual page 1358

Brake System Indicator Circuit Troubleshooting
1. Release the parking brake.
2. Turn the ignition switch ON (II), and check the brake
system indicator for the following conditions:
• Brake system indicator does not come on at all,
go to step 3.
• Brake system indicator stays on all the time, go
to step 5.
• Brake system indicator comes on for 2 seconds,
then goes off. Repair open in the wire between
terminal No. 3 of the ALT 4P connector and
terminal B8 of the gauge assembly.
3. Turn the ignition switch OFF then ON (II) again.
Does the ABS indicator come on?
YES Go to step 4.
NO Repair open in the indicator power source
circuit.
• Blown BACKUP LIGHT (10A) fuse.
• Open in the wire between the BACKUP LIGHT
(10A) fuse and the gauge assembly.
• Open circuit inside the fuse box.
4. Check the brake system indicator bulb in the gauge
assembly.
Is the bulb OK ?
YES Repair open in the brake system indicator
circuit.
NO Replace the brake system indicator bulb.
5. Start the engine.
Does the brake system indicator go of f ?
YES System is OK at this time.
NO Go to step 6.
6. Check the ABS indicator.
Does the ABS indicator come on?
YES Read the ABS DTC's (see page 19-82), and do
the applicable troubleshooting.
NO Go to step 7.
7. Turn the ignition switch OFF.
8. Disconnect the ABS/TCS control unit connector
B (16P).
9. Start the engine, and check the brake system
indicator.
Does the brake system indicator go of f ?
YES Replace the ABS/TCS control unit.
NO Check the brake system indicator circuit
(short to body ground between terminal No. 3 of
the ALT 4P connector and terminal B8 of the gauge
assembly), parking brake switch (stuck ON) and
brake fluid level switch (stuck ON).
19-157