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Home >> Buick >> 2006 >> Rainier 4.2 S, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.2L - DTC P2101 To P2444 >> DTC P2135 >> Circuit Description

Circuit Description

The throttle actuator control assembly has 2 Throttle Position (TP) sensors mounted within the assembly. The Powertrain Control Module (PCM) provides individual signal, ground, and 5-volt reference circuits to each sensor. Both sensors operate within a voltage range between 0.35-4.65 volts. When the throttle is opened from 0-100 percent, 1 sensor signal voltage increases while the other decreases. The signal circuit for TP sensor 1 is referenced to ground, and the signal circuit for TP sensor 2 is pulled up to 5 volts within the PCM.

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