OSC - Transmission Bench Modes

The following Transmission Bench Modes may be used or required during diagnostics.

SSA, SSB and TCC in BENCH MODE:
The BENCH MODE allows the technician to perform electrical circuit checks on the following components:
- SSA - Activates SS#l OFF or ON.
- SSB - Activates SS#2 OFF or ON.
- TCC - Activates TCC OFF or ON.
OSC "SSA, SSB, TCC- BENCH MODE Operates ONLY when:
- anti-lock brake speed sensor and digital TR sensor are operational.
- no anti-lock brake speed sensor and digital TR sensor DTCs.
- transmission range selector lever in P.
- key ON.
- engine OFF.
OSC Command Values
- [OFF] - turns solenoid OFF.
- [ON] - turns solenoid ON.
- [XXX] - cancels OSC value sent.
- [SEND] - sends the values to PCM.
BENCH MODE Procedure for SSA, SSB and TCC
Follow operating instructions from the NGS menu screen:
- Select "Output State Control."
- Select "Trans - Bench Mode."
- Select "PIDs" to be monitored.
- Monitor all selected PIDs during test.
- Select "Parameters - SSA, SSB or Torque Converter Clutch (TCC).
- Select "ON" to turn solenoid ON.
- Press "SEND" to send command ON.
- Select "OFF" to turn solenoid OFF.
- Press " SEND" to send command OFF.
- Select -XXX- to cancel at any time.
- Press "SEND."

EPC in BENCH MODE:
The BENCH MODE is also used to test the functionality of the transmission's electronic pressure control. During BENCH MODE, the Electronic Pressure Control (EPC) solenoid can ramp in increments of 15 PSI from zero to 90 PSI and 90 to zero PSI.
The Output State Control (OSC) functions for the parameter EPC allows the technician to choose the following options:
- EPC - Activates EPC to selected values.
- [00] - sets EPC pressure to 00 kPa (00 PSI).
- [15] - sets EPC pressure to 103 kPa (15 PSI).
- [30] - sets EPC pressure to 206 kPa (30 PSI).
- [45] - sets EPC pressure to 310 kPa (45 PSI).
- [60] - sets EPC pressure to 411 kPa (60 PSI).
- [75]- sets EPC pressure to 517 kPa (75 PSI).
- [90] - sets EPC pressure to 620 kPa (90 PSI).
OSC -EPC- BENCH MODE Operates ONLY when:
- anti-lock brake speed sensor and digital TR sensor are operational.
- No anti-lock brake speed sensor and digital Transmission Range (TR) sensor DTCs.
- Transmission range selector lever in P.
- Pressure gauge installed.
- Key ON.
- Engine ON.
- Engine RPM at 1500.
OSC Command Values
- [00] - sets EPC pressure to 00 kPa (00 PSI).
- [15] -sets EPC pressure to 103 kPa (15 PSI).
- [30] - sets EPC pressure to 206 kPa (30 PSI).
- [45] -sets EPC pressure to 310 kPa (45 PSI).
- [60] - sets EPC pressure to 411 kPa (60 PSI).
- [75] - sets EPC pressure to 517 kPa (75 PSI).
- [90] - sets EPC pressure to 620 kPa (90 PSI).
- [OFF] - turns solenoid off.
- [ON] - turns solenoid on.
- [XY-X] - cancels OSC value sent.
- [SEND] - sends the values to PCM.

BENCH MODE Procedure for EPC
Following operating instructions from the New Generation Star (NGS) menu screen.
- Select "Output State Control."
- Select "Trans - Bench Mode."
- Select " PIDs " to be monitored.
- Monitor all selected PIDs during test.
- Select "Parameters - Electronic Pressure Control (EPC).-
- Select Value " 0-620 kPa (0-90 psi)."
- Press "SEND" to send command.
- Select "XY-X" to cancel at any time.
- Press "SEND."