Acura / Honda transmission. Instruction — page 16

The Honda/Acura TCC Solenoid for the B7TA/B7YA 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
B7TA/B7YA 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.

BAXA

Shift Solenoids

The BAXA 3 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 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 On/Off solenoid

The BAXA 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 (yel). The TCC solenoid is
grounded at the body or dedicated ground wire. A TCC PWM may also
be employed called Sol-B. 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 solenoid-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 BAXA 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 (Solenoid A)

The Electronic Pressure Control Solenoid (Solenoid A) for the BAXA
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.

BGRA

Shift Solenoids

The BGRA 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 On/Off solenoid

The BGRA TCC On/Off solenoid (Sol-A) 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 (yel). The TCC
solenoid is grounded at the body or dedicated ground wire. A TCC
PWM may also be employed (Sol B). 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 solenoid-
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

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