TM 9-2320-387-24-l
TRANSMISSION
SYSTEM
DTC 81
2-3 Shift Solenoid Circuit Fault
Circuit Description:
Ignition voltage is supplied directly to the 2-3 shirk
solenoid. The TCM controls the solenoid by providing
the ground path through Circuit 315A to TCM.
DTC 81 Will Set When:
l The TCM commands the solenoid ON and
voltage remains high.
l The TCM commands the solenoid OFF and
voltage remains low.
l All conditions are met for 2 seconds.
DTC 82
1-2 Shift Solenoid Circuit Fault
Circuit Description:
Ignition voltage is supplied directly to the l-2 shit%
solenoid. The TCM controls the solenoid by providing
the ground path through Circuit 237A to TCM.
DTC 82 Will Set Whex
l The TCM commands the solenoid ON and
voltage remains high.
l The TCM commands the solenoid OFF and
voltage remains low.
l All conditions are met for 2 seconds.
REFERENCE INFORMATION
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DTC 83
TCC Solenoid (PWM) Circuit Fault
Circuit Description:
The control module supplies a ground through an
internal Quad-Driver Module (QDM), allowing
current to flow through the solenoid coil according
to the duty cycle (percentage of ON and OFF time).
This current flow through the solenoid coil creates
a magnetic field that magnetizes the solenoid core.
The magnetized core attracts the checkball to seat
against spring pressure. This blocks the exhaust for
the TCC signal fluid and allows 2-3 drive fluid to
feed the TCC signal circuit. The TCC signal fluid
pressure acts on the TCC regulator valve to
regulate line pressure and to apply fluid pressure to
the TCC shift valve. When the TCC shift valve is in
the apply position, regulated applied fluid pressure
is directed through the TCC valve to apply the
torque converter clutch.
DTC 83 Will Set When:
The TCM commands the solenoid ON and
voltage remains high.
The TCM commands the solenoid OFF and
voltage remains low.
All conditions are met for 2 seconds.
2-400
