2010 Cadillac Truck SRX AWD V6-3.0L Page 1304
P2135
* DTCs P0121, P0122, P0123, P0222, P0223, or P06A3 are not set.
* The ignition is ON, or the engine is running.
* The engine is not operating in reduced power mode.
* The ignition voltage is greater than 6 V.
* The DTCs runs continuously when the above conditions are met.
Conditions for Setting the DTC
P0121
The ECM detects that the TP sensor 1 voltage is stuck in range for less than 1 s.
P0122
The ECM detects that the TP sensor 1 voltage is less than 0.3 V for less than 1 s.
P0123
The ECM detects that the TP sensor 1 voltage is greater than 4.8 V for less than 1 s.
P0222
The ECM detects that the TP sensor 2 voltage is less than 0.3 V for less than 1 s.
P0223
The ECM detects that the TP sensor 2 voltage is greater than 4.6 V for less than 1 s.
P2135
The ECM detects that TP sensor 1 and TP sensor 2 disagree greater than 7-10 percent for less than 1 s.
Action Taken When the DTC Sets
P0121
* DTC P0121 is a type B DTC
* The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode.
P0122, P0123, P0222, P0223, or P2135
* DTC P0122, P0123, P0222, P0223, and P2135 are type A DTCs
* The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode.
Conditions for Clearing the DTC
* DTC P0121 is a type B DTC.
* DTCs P0122, P0123, P0222, P0223 and P2135 is a type A DTC.
Diagnostic Aids
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 (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
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
