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Home >> Pontiac >> 2000 >> Firebird Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P1125: Accelerator Pedal Position (App) Sensor System ("Y" Body) >> Circuit Description
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Circuit Description

WARNING: This page is about a different variant/trim than selected.

The APP sensor is mounted on accelerator pedal assembly. There are 3 individual APP sensors within one housing. Three separate signals, grounds and 5-volt reference circuits are used in order to connect APP sensor assembly and the Throttle Actuator Control (TAC) module. If only one APP sensor DTC is set, the redundant APP system allows the TAC system to continue operating normally. DTC will set when 2 or more APP sensors are out of range or all 3 APP sensors disagree, or one APP sensor is out of range and the other 2 sensors disagree. When this DTC is set, REDUCED ENGINE POWER message will be displayed.

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