Disconnect the 4P connector (A) from the brake pedal position switch (B).
Check for continuity between the terminals in each switch position
according to the table.
If the test results are not as specified, do the Brake Pedal
and Brake Pedal Position Switch Adjustment, then recheck. If the results are
still not as specified, replace the switch.
Replacement
Remove the driver's dashboard undercover.
Disconnect the 4P connector (A) from the brake pedal position switch (B).
Turn the brake pedal position switch 45°
counterclockwise to remove the switch from the pedal bracket (C), then
remove the attaching piece (D).
Install a new switch in the reverse of order removal.
Do the Brake Pedal and Brake Pedal Position
Switch Adjustment.
Honda Odyssey Service Manual > Cooling: A/C Service Tips and Precautions
Compressed air mixed with the R-134a forms a combustible vapor. The vapor can burn or explode causing serious injury. Never use compressed air to pressure test R-134a service equipment or vehicle air conditioning systems. caution Air conditioning refrigerant or lubricant vapor can irrit ...