The Honda/Acura TCC Solenoid for the BYBA/BVGA can be either an
ON/OFF or Pulse-Width Modulated unit. The unit is pulsed steadily
(Fixed Frequency) at 65 to 200 Hz. Then the positive or negative side
of the wave is widened or narrowed to control the TCC pressure. The
Pulse-Width has a duty-cycle in percentage. 90% DC = full operation
10% = almost OFF. Use a duty-cycle meter to test signal. DO NOT
apply steady power to this unit. This is a low resistance unit and will
get damaged by steady power application. Use a turn-signal flasher in
series with the solenoid to test. This will reduce current allowing you to
test the unit. This unit is POWER controlled by the TCM or PCM at pin
2. The GROUND is taken from the solenoid body itself.
TCC PWM Resistance = 15 to 28 Ohms
MAX CURRENT = Do not apply steady power. Low resistance unit.
Electronic Pressure Control Solenoid
The Electronic Pressure Control Solenoid (Solenoid A) for the
BYBA/BVGA transmission is a PWM or Pulse Width Modulated unit.
PWM is a ratio of On to OFF. A 90% Duty-Cycle means that the unit is
ON 90% of the time, therefore, there will be high trans-fluid pressure.
The TCM provides both POWER and GROUND to control the unit. The
TCM varies the duty-cycle to the solenoid at a steady frequency. Do
not apply steady power to this solenoid or damage will result. This is a
low resistance unit. Use a turn-signal flasher in series with the unit
when testing. This will pulse and restrict power, preventing damage.
EPC RESISTANCE: 4 to 6 Ohms
MAX CURRENT: Do not apply steady power. Current depends on duty-
cycle.