Output State Control (OSC) Mode: Notes
Output State Control (OSC) allows the technician to take control of certain parameters to function the transaxle. For example, OSC allows the technician to shift the transaxle only when commanding a gear change. If the technician commands 1st gear in OSC, the transaxle will remain in 1st gear until the technician commands the next gear. For another example, the technician can command a shift solenoid to turn on or off when carrying out an electrical circuit check. OSC has two modes of operation for transaxle, the BENCH MODE and the DRIVE MODE. Each mode/parameter has a unique set of vehicle operating requirements that the technician must meet before being allowed to operate OSC.
NOTE:
To operate OSC, the transmission range (TR) sensor and the vehicle speed sensor (VSS) must be operational. No diagnostic trouble codes (DTCs) related to the TR sensor or the VSS can be present.
NOTE:
Technician should perform a key off before initiating any OSC activities in order to clear any previously learned Failure Mode Effects Management (FMEM) actions from the vehicle memory.
- The vehicle requirements MUST BE MET when SENDING the OSC value. Refer to vehicle requirements for each individual 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 SENDING an OSC value, and the vehicle requirements are no longer met, then PCM will cancel the OSC value and NO ERROR message will appear. Once the vehicle requirements are met again, the PCM will automatically SEND the previous OSC value without any additional actions required by the technician.
- The OSC value [XXX] may be sent anytime to cancel OSC.