PC A in Bench Mode

CAUTION: The parking brake must be set prior to carrying out this procedure or damage may occur.

The Bench Mode is used to test the functionality of the transmission electronic pressure control. During Bench Mode, the PC A solenoids can be commanded in increments of 15 psi from 0 to 90 psi and from 90 to 0 psi. The line pressure tap is used to verify output pressure from PC A and 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 PC A allow the technician to choose from the following options:

PC A - activates PC A to selected values.
00 - sets PC A pressure to 00 psi.
15 - sets PC A pressure to 15 psi.
30 - sets PC A pressure to 30 psi.
45 - sets PC A pressure to 45 psi.
60 - sets PC A pressure to 60 psi.
75 - sets PC A pressure to 75 psi.
90 - sets PC A pressure to 90 psi.

The PC A Bench Mode should only be operated to check PRESSURE FUNCTIONALITY using an installed pressure gauge (300 psi) when:

OSS and digital TR sensor are operational.
No OSS and digital TR sensor DTCs are set.
Selector lever is in the P or N position.
Key is ON.
Engine is running above 1,500 rpm.

The PC A Bench Mode should only be operated to complete PC A SOLENOID CIRCUIT PINPOINT TESTS when:

OSS and digital TR sensor are operational.
No OSS and digital TR sensor DTCs are set.
Selector lever is in the P or N position.
Key is ON.
Engine is running above 1,500 rpm.

The OSC command values are:

00 - sets PC A pressure to 00 psi.
15 - sets PC A pressure to 15 psi.
30 - sets PC A pressure to 30 psi.
45 - sets PC A pressure to 45 psi.
60 - sets PC A pressure to 60 psi.
75 - sets PC A pressure to 75 psi.
90 - sets PC A pressure to 90 psi.
XXX - cancels any value sent to the PCM.
SEND - sends a value to the PCM.