PCA In Bench Mode

PCA in BENCH MODE

NOTE: PCA, EPC and VFS all refer to the solenoids. PCA is preferred for this transmission because the scan tool display PCA.
The BENCH MODE is also used to test the functionality of the transaxle electronic pressure control. During BENCH MODE, the PCA solenoid can ramp in increments of 20 PSI from 50 PSI to 150 PSI and 150 PSI to 50 PSI.

NOTE: PCA pressure represents transaxle line pressure. The technician should measure PCA pressure using the line pressure tap.

The OSC function for the parameter PCA allows the technician to choose the following options:
- EPC - Activates PCA to selected values.
- [50] - sets PCA pressure to 50 PSI.
- [70] - sets PCA pressure to 70 PSI.
- [90] - sets PCA pressure to 90 PSI.
- [110] - sets PCA pressure to 110 PSI.
- [130] - sets PCA pressure to 130 PSI.
- [150] - sets PCA pressure to 150 PSI.
OCS PCA" BENCH MODE should ONLY be operated to check PRESSURE FUNCTIONALITY using an installed pressure gauge when:
- VSS and digital TR sensor are operational.
- No VSS and digital TR sensor are operational.
- Key ON.
- Engine ON.
- Engine speed at least 1500 RPM.
OSC PCA" BENCH MODE should ONLY be operated to complete PCA SOLENOID CIRCUIT PINPOINT TESTS when:
- VSS and digital TR sensor are operational.
- No VSS and digital TR sensor DTC's.
- Transmission range selector lever in P.
- Key ON.
- Engine ON.
OSC Command Values:
- [50] - sets PCA pressure to 50 PSI.
- [70] - sets PCA pressure to 70 PSI.
- [90] - sets PCA pressure to 90 PSI.
- [110] - sets PCA pressure to 110 PSI.
- [130] - sets PCA pressure to 130 PSI.
- [150] - sets PCA pressure to 150 PSI.
- [XXX] - cancels OSC sent value.
- [SEND] - sends the values to PCM.
BENCH MODE Procedure for PCA:
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 - PCA."
- Select Value"50 - 150 PSI."
- Press"SEND" to send command.
- Select"XXX" to cancel at any time.
- Press"SEND" to send the command.