PCA, PCB, PCC in Bench Mode

WARNING: Block all wheels, set the parking brake and firmly apply the service brake to reduce the risk of vehicle movement during this procedure. Failure to follow these instructions may result in serious personal injury.

The Bench Mode is also used to test the functionality of the transmission electronic pressure control. During Bench Mode, the PCx solenoids can be commanded in increments of 15 psi from 0 to 90 psi and 90 to 0 psi.

The line pressure tap is used to verify output pressure from PC A or PC B by turning either one off while verifying the output from the other solenoid. The second pressure tap is used to verify the output from the PC C solenoid.

The OSC functions for the parameter PCx allows the technician to choose the following options:

PCx - Activates PCx to selected values.
00 - Sets PCx pressure to 00 psi.
15 - Sets PCx pressure to 15 psi.
30 - Sets PCx pressure to 30 psi.
45 - Sets PCx pressure to 45 psi.
60 - Sets PCx pressure to 60 psi.
75 - Sets PCx pressure to 75 psi.
90 - Sets PCx pressure to 90 psi.

OSC "PCx" Bench Mode should ONLY be operated to check PRESSURE FUNCTIONALITY using an installed pressure gauge (300 psi) when:

VSS and digital TR sensor are operational.
No VSS and digital TR sensor DTCs.
Transmission range selector lever in P or N.
Pressure gauge installed.
Key ON.
Engine ON.
Engine RPM at least 1500.

OSC "PCx" Bench Mode should ONLY be operated to complete PCx SOLENOID CIRCUIT PINPOINT TESTS when:

VSS and digital TR sensor are operational.
No VSS and digital TR sensor DTCs are present.
Transmission range selector lever is in P or N.
Key "ON".
Engine "OFF".

OSC Command Values:

00 - Sets PCx pressure to 00 psi.
15 - Sets PCx pressure to 15 psi.
30 - Sets PCx pressure to 30 psi.
45 - Sets PCx pressure to 45 psi.
60 - Sets PCx pressure to 60 psi.
75 - Sets PCx pressure to 75 psi.
90 - Sets PCx pressure to 90 psi.
XXX - cancels OSC value sent.
SEND - sends the values to PCM.