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Home >> Pontiac >> 2007 >> Solstice GXP, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls & Fuel - 2.4L - DTC P0420 To P2544) >> DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Circuit/System Testing must be performed before proceeding with Component Testing.

Dynamic Test

  1. Install a 3A fused jumper wire between the 5-volt reference terminal of the applicable APP sensor and 5 volts. Install a jumper wire between the low reference terminal and a ground.
  2. Sweep the sensor through the entire range while monitoring the voltage between the signal terminal and the low reference terminal with a DMM. the voltage should vary between 0.30-4.98 volts with out any spikes or dropouts.
    • If the voltage is not within the specified range or is erratic, replace the accelerator pedal assembly.
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