Output State Control (OSC) Mode: Notes

Output State Control (OSC) - Output state control (OSC) allows the technician to control certain transmission function parameters. For example, OSC allows the technician to shift the transmission only when commanding a gear change. If the technician commands 1st gear in OSC, the transmission will remain in 1st gear until the technician commands the next gear.

Another example of the OSC features is that a technician can command a shift solenoid to turn ON or OFF when carrying out an electrical circuit check.

The OSC has 2 modes of operation for transmission: Bench and Drive. Each mode has a unique set of operating requirements that the technician must meet before being allowed to operate OSC.

NOTE: To operate OSC, the digital transmission range (TR) sensor and the output shaft speed (OSS) sensor must be operational. No DTCs related to the digital TR sensor or the OSS can be present.

Some of the operating requirements for using OSC are:

The vehicle requirements MUST BE MET when SENDING the OSC value. Refer to the vehicle requirements for each test.
If the vehicle requirements are NOT MET when SENDING the OSC value, an ERROR MESSAGE will appear. When the ERROR MESSAGE is received, OSC is aborted and must be restarted.
If, after the sent value is substituted, the vehicle requirements are no longer met, the PCM will cancel the OSC value and resume normal operation. No error message will be sent.
The OSC value [XXX] may be sent anytime to cancel OSC.