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 hydraulic 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 pressure solenoid completely off and commanding 345 kPa (50 psi) may not electrically turn the pressure solenoid completely on.

The vehicle requirements for sending an OSC command for LINEDSD in Bench Mode are as follows:

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

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