2010 Cadillac Truck SRX AWD V6-3.0L Page 1962

2010 Cadillac Truck SRX AWD V6-3.0L Page 1962

Circuit/System Description

The accelerator pedal assembly contains 2 accelerator pedal position (APP) sensors. The APP sensors are mounted to the accelerator pedal

assembly and are not serviceable. The APP sensors provide a signal voltage that changes relative to pedal position. The engine control module

(ECM) supplies each APP sensor with a 5-volt reference circuit, a low reference circuit, and a signal circuit.

Both the APP sensors 1 and 2 signal percentages increase as the pedal is depressed, from approximately 0 percent at rest to above 95 percent when

fully depressed.

Conditions for Running the DTC

P2122, P2123, P2127, or P2128

* DTC P06A3 or P0697 are not set.

* The ignition is ON or the engine is operating.

* The ignition voltage is greater than 6 volts.

* The ECM is not commanding reduced power.

* The DTCs run continuously when the above conditions are met.

P2138

* DTCs P06A3, P0697, P2122, P2123, P2127, or P2128 are not set.

* The ignition is ON or the engine is operating.

* The ignition voltage is greater than 6 volts.

* The ECM is not commanding reduced power.

* The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

P2122

The ECM detects that the APP sensor 1 voltage is less than 0.46 volt for less than 1 s.

P2123

The ECM detects that the APP sensor 1 voltage is greater than 4.7 volts for less than 1 s.

P2127

The ECM detects that the APP sensor 2 voltage is less than 0.32 volt for less than 1 s.

P2128

The ECM detects that the APP sensor 2 voltage is greater than 2.6 volts for less than 1 s.

P2138

The ECM detects that APP sensor 1 and APP sensor 2 disagree greater than 10 percent for less than 1 s.

OR

The ECM detects that both APP sensor 1 and APP sensor 2 are 5 percent greater than the learned minimum position for less than 1 s.

Action Taken When the DTC Sets