Acura / Honda transmission. Manual — part 21

(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.

MGHA

Shift Solenoids

The MGHA 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 MGHA 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. 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 Solenoids

The Honda/Acura TCC Solenoid for the MGHA can be either an ON/OFF
or Pulse-Width Modulated unit. The unit is pulsed steadily (Fixed
Frequency) (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.

Pressure Control Solenoid

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

RESISTANCE AT EACH SOLENOID: 6 Ohms

MKYA/GPLA/MKZA/GPPA

Shift Solenoids

The MKYA/GPLA/MKZA/GPPA 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 MKYA/GPLA/MKZA/GPPA 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 MKYA/GPLA/MKZA/GPPA 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