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.
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HOMESERVICE MANUALSPONTIAC2005VIBE FWD L4-1.8L VIN 8REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONTHROTTLE ACTUATOR CONTROL (TAC) SYSTEM
2005 Pontiac Vibe FWD L4-1.8L VIN 8
Throttle Actuator Control (Tac) System
2005 Pontiac Vibe FWD L4-1.8L VIN 8SECTION Throttle Actuator Control (Tac) System
POWERTRAIN CONTROL MODULE
The powertrain control module (PCM) determines the drivers intent and then calculates the appropriate throttle response. The accelerator pedal position (APP) sensor 1 enables the PCM to provide a target value to the TAC module in response to accelerator pedal movement. The throttle position (TP) sensor 1 input enables the PCM to determine whether the throttle valve opening is correct for the desired engine operation at that moment.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.