Acura / Honda transmission. Manual — part 19

(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.

Electronic Pressure Control Solenoid (LPS) or Linear Throttle
Pressure Control Solenoid

The Electronic Pressure Control Solenoid (LPS) also called the Linear
Throttle Pressure Control Solenoid (Honda and Acura) for the
M5HA/M5DA 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: 3 to 6 Ohms

MAX CURRENT: Do not apply steady power. Current depends on duty-
cycle.

M6HA

Shift Solenoids

The M6HA 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 M6HA 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

The Honda/Acura TCC Solenoid for the M6HA 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 M6HA
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: 5 to 6 Ohms

MAX CURRENT: Do not apply steady power. Current depends on duty-
cycle.

M7WA/MGFA

Shift Solenoids Testing

The M7WA/MGFA 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 M7WA/MGFA 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 Solenoid