Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SSA, SSB and TCC in BENCH MODE
These OSC functions are used to command SSA, SSB and TCC solenoids OFF and ON when carrying out an electrical circuit check.
The OSC functions for parameters SSA, SSB and TCC allow the technician to choose the following options:
- OFF - Directs PCM to command the solenoid OFF
- ON - Directs PCM to command the solenoid ON
- XXX - Cancels OSC command for that particular solenoid (returns to normal operation)
The requirements for SENDING an OSC value for SSA, SSB or TCC are as follows:
- Key on and engine not running or key on and engine running at idle
- Gear selector in PARK or NEUTRAL
The vehicle requirements must be met when sending the OSC value for SSA, SSB and TCC solenoids. 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. After sending the OSC value, if the vehicle requirements are no longer met, the error message will not appear but the OSC value will be cancelled by the PCM (monitor corresponding PID). The OSC value XXX may be sent anytime to cancel OSC.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.