2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1958

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1958

P0120

TP sensor 1 voltage is less than 0.325 V or greater than 4.75 V for greater than 1 s.

P0122

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

P0123

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

P0220

The TP sensor 2 voltage is less than 0.25 V or greater than 4.59 V for greater than 1 s.

P0222

The ECM detects that the TP sensor 2 voltage is less than 0.25 V for greater than 1 s.

P0223

The ECM detects that the TP sensor 2 voltage is greater than 4.59 V for greater than 1 s.

P2135

The difference between the TP sensor 1 and TP sensor 2 exceeds a predetermined value for greater than 2 s.

Action Taken When the DTC Sets

* DTC P0120, P0122, P0123, P0220, P0222, P0223, and P2135 are Type A DTCs.

* The control module commands the TAC system to operate in the Reduced Engine Power mode.

* A message center or an indicator displays Reduced Engine Power.

* Under certain conditions the control module commands the engine OFF.

Conditions for Clearing the MIL/DTC

DTCs P0120, P0122, P0123, P0220, P0222, P0223, and P2135 are Type A DTCs.

Diagnostic Aids

* If the Throttle Sweep Test is not available on the scan tool, observe the scan tool TP Sensor 1 and 2 Agree/Disagree parameter while

performing the following tests:

- Slowly depress the accelerator pedal to WOT and then slowly return the pedal to closed throttle. Repeat the procedure several times.

- Rapidly depress the accelerator pedal from the rest position to the wide open throttle position (WOT) and release pedal. Repeat the

procedure several times.

The TP Sensor 1 and 2 Agree/Disagree parameter should display Agree. If Disagree is displayed, continue diagnosis in Circuit/System

Testing.

* A high resistance condition on the throttle position and throttle actuator control circuits could cause a DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Throttle Actuator Control (TAC) System Description (See: Powertrain Management/Computers and Control Systems/Description and

Operation/Throttle Actuator Control (TAC) System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)