Acura / Honda transmission. Manual — part 18

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.

BZKA/MZKA

Shift Solenoids

The BZKA/MZKA 4 shift solenoids are normally closed. These solenoids
are POWER controlled at trans conn. pins 5(SS-A [Blu/Blk]), 2(SS-B
[Grn/Wht]), 1(SS-C [Grn]) and 3(SS-D [Yel]). The solenoid wires are
GROUNDED at the transmission body itself. Solenoid resistance should
be between 11 and 26 Ohms. TO meassure voltage, inject power at
sol. pins. You should see 12 volts at sol. body when solenoid is
removed from trans-body and hear a click. If no voltage is seen at
solenoid body side, then solenoid coil is open or broken.

SHIFT-SOLENOID Resistance = 11 - 26 Ohms

MAXIMUM CURRENT at room temperature = 1.10 Amps or 1100 mA

POWER FEED Test between Batt + and Solenoid Power-Feed = 100 to
300 mVolts w/KOER

TCC Solenoids

The BZKA/MZKA uses 3 clutch control solenoids. These are PWM
controlled. Go to the TCC PWM section for further information.

TCC PWM Solenoid

The Honda/Acura TCC Solenoid for the BZKA/MZKA 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 = 16 to 30 Ohms

MAX CURRENT = Do not apply steady power. Low resistance unit.

Pressure Control Solenoids

The BZKA/MZKA uses 3 separate pressure control solenoids. Pressure
is controlled according to the 3 PCS combination engagement.

RESISTANCE AT EACH SOLENOID: 6 Ohms

M5HA/M5DA

Shift Solenoids

The M5HA/M5DA 2 shift solenoids are normally closed. These solenoids
are POWER controlled through independent sol. connectors pin 2 each.
The solenoid wires are GROUNDED at the transmission body itself.
Solenoid resistance should be between 15 and 26 Ohms. TO meassure
voltage, inject power at sol. pins. You should see 12 volts at sol. body
when solenoid is removed from trans-body and hear a click. If no
voltage is seen at solenoid body side, then solenoid coil is open or
broken.

SHIFT-SOLENOID Resistance = 15 - 26 Ohms

MAXIMUM CURRENT at room temperature = 80 Amps or 800 mA

POWER FEED Test between Batt + and Solenoid Power-Feed = 100 to
300 mVolts w/KOER

TCC On/Off solenoid

The M5HA/M5DA TCC On/Off solenoid is used to control the application
of the torque converter wet clutches. This is just an Allow or Not-allow
device. Once the TCC On/Off solenoids allows fluid passage, the TCC
PWM solenoid then controls the engagement and makes actuation
harsher or softer. The TCC On/Off solenoid is very similar electrically
and often the same as the normal shift solenoids. This solenoid is
POWER controlled by the TCM at pin 1. The TCC solenoid is grounded
at the body or dedicated ground wire. A TCC PWM may also be
employed. If power is applied, you'll hear a click. Also remove the
solenoid and see if when injecting power the solenoid body also goes
to 12 volt potential, indicating good sol-coil integrity.

TCC On/Off Resistance = 12 - 24 Ohms

MAXIMUM CURRENT at room temperature = 1.00 Amps or 1000 mA

POWER FEED Test between Batt + and Solenoid Power-Feed = 100 to
300 mVolts w/KOER

TCC PWM Solenoid

The Honda/Acura TCC Solenoid for the M5HA/M5DA can be either an
ON/OFF or Pulse-Width Modulated unit. The unit is pulsed steadily