Using Output State Control (OSC) and Accessing PIDs
To confirm that the OSC value was sent by the scan tool and the EEC has accepted the OSC substitution, a corresponding PID for each OSC parameter must be monitored. Additional PIDs should be monitored to help the technician adequately diagnose the transmission.
The following is a list of OSC parameters and their corresponding PID:
OSC PARAMETERS AND THEIR CORRESPONDING PID REFERENCE
| OSC Parameter | Corresponding PID | Additional PIDs |
|---|---|---|
| SSA | SSA | SSAF |
| SSB | SSB | SSBF |
| SSC | SSC | SSCF |
| SSD | CCSF | - |
| TCC | TCC | TCCF, TCCMACT (do not use PID TCCMCMD during OSC) |
| EPC | EPC | - |
| GR_CM | GEAR | TRANRAT |
To confirm that the OSC substitution occurred, SEND the OSC value and monitor the corresponding PID value. If no ERROR MESSAGE was received and the value of the corresponding PID remains the same as the value sent from OSC, then the OSC substitution was successful.