2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1081

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1081

P0221

* The engine speed is greater than 480 RPM.

* The vehicle speed is 0 km/h (0 mph).

* The engine coolant temperature is greater than 5掳C (41掳F).

* The ignition voltage is greater than 8 V.

* The intake air temperature is greater than 5掳C (41掳F).

* DTC P0221 runs continuously when the above conditions are met.

Conditions for Setting the DTC

P0121

The throttle position sensor 1 disagrees greater than 9 % from throttle position sensor 2, or throttle position sensor 1 disagrees greater than 9 %

from the predicted value for greater than 1 s or a cumulative of 4 s.

P0122

The ECM detects the throttle position sensor 1 signal voltage is less than 0.18 V for greater than 1 s or a cumulative of 4 s.

P0123

The ECM detects the throttle position sensor 1 signal voltage is greater than 4.6 V for greater than 1 s or a cumulative of 4 s.

P0221

The throttle position sensor 2 disagrees greater than 9 % from throttle position sensor 1, or throttle position sensor 2 disagrees greater than 9 %

from the predicted value for greater than 1 s or a cumulative of 4 s.

P0222

The ECM detects the throttle position sensor 2 signal voltage is less than 0.16 V for greater than 1 s or a cumulative of 4 s.

P0223

The ECM detects the throttle position sensor 2 signal voltage is greater than 4.9 V for greater than 1 s or a cumulative of 4 s.

Action Taken When the DTC Sets

* DTCs P0121 and P0221 are Type B DTCs.

* DTCs P0122, P0123, P0222, and P0223 are Type A DTCs.

Conditions for Clearing the DTC

* DTCs P0121 and P0221 are Type B DTCs.

* DTCs P0122, P0123, P0222, and P0223 are Type A DTCs.

Diagnostic Aids

If there is a condition with the throttle position sensors, the ECM defaults to reduced power mode for the entire ignition cycle, even if the condition

is corrected.

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

Procedures/Connector Repairs/Connector Repairs)