LINEDSD# in Bench Mode

The LINEDSD# in Bench Mode may be used when carrying out an electrical check on the EPC solenoid or to test the functionality of the transmission's electronic control of the line pressure. When testing the EPC for controlling the line pressure, the technician is required to run the engine greater than 1,500 RPM. The installation of a Transmission Fluid Pressure Gauge is required to actually test whether the transmission line pressure is correct. This will test whether the hydraulic pump, the pressure regulator and the EPC solenoid and other associated mechanical and hydraulic components are working correctly.

When carrying out an electrical test on the EPC solenoid, set LINEDSD# to 1,379 kPa (200 psi) to command the EPC solenoid OFF and 345 kPa (50 psi) to command the EPC solenoid ON. Commanding 1,379 kPa (200 psi) may not electrically turn the EPC completely off and commanding 345 kPa (50 psi) may not electrically turn the EPC completely on.

The vehicle requirements for sending an output state control command for LINEDSD# in Bench Mode are as follows:

• KOER (engine speed greater than 1,500 RPM)
• Selector Lever in PARK or NEUTRAL

The vehicle requirements must be met when sending the output state control command for EPC. If the vehicle requirements are not met when sending the output state control command, the command will be cancelled. If after sending the output state control command the vehicle requirements are no longer met, the output state control command will be cancelled.