2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2847

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2847

Circuit/System Description

The accelerator pedal assembly contains two accelerator pedal position (APP) sensors. The APP sensors are mounted in the pedal assembly and are

not serviceable. The APP sensors provide a signal voltage that changes relative to the position of the accelerator pedal. The Engine Control Module

(ECM) supplies a separate 5 V reference and low reference circuit for each of the APP sensors.

Conditions for Running the DTC

P2120, P2122, P2123, P2125, P2127, P2128

* DTC P0641 and P0651 are not set.

* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.

* The ignition is in the Unlock/Accessory or Run position.

* DTC P2120, P2122, P2123, P2125, P2127, P2128 run continuously when the above conditions are met.

P2138

* DTC P0641, P0651, P2120, P2125 are not set.

* The system voltage is greater than 5.23 V.

* The ignition is in the Unlock/Accessory or Run position.

* DTC P2138 runs continuously when the above conditions are met.

Conditions for Setting the DTC

P2120

The APP sensor 1 voltage is less than 0.325 V, or greater than 4.75 V for greater than 0.4 s.

P2122

The ECM detects that the APP sensor 1 voltage is less than 0.325 V for greater than 0.4 s.

P2123

The ECM detects that the APP sensor 1 voltage is greater than 4.75 V for greater than 0.4 s.

P2125

The APP sensor 2 voltage is less than 0.325 V, or greater than 4.75 V for greater than 0.4 s.

P2127

The ECM detects that the APP sensor 2 voltage is less than 0.325 V for greater than 0.4 s.

P2128

The ECM detects that the APP sensor 2 voltage is greater than 4.75 V for greater than 0.4 s.