2010 Cadillac Truck SRX FWD V6-3.0L Page 2048

2010 Cadillac Truck SRX FWD V6-3.0L Page 2048

* Mass airflow is less than 100 g/s.

* Catalyst heating is active.

* Current altitude is less than 3,000 m (9,843 ft).

* The difference between intake air temp and engine coolant start temp is less than 15掳C (59掳F).

* The DTC runs once per ignition cycle when the above conditions exist.

P2432 or P2433

* The ignition is ON, or the engine is operating.

* The DTCs run continuously when the above condition exists for greater than 1 s.

Conditions for Setting the DTC

P2431

* The ECM detects that the secondary air injection pressure sensor is 5 kPa (0.7 psi) less than the BARO sensor when the secondary air

injection pump is commanded ON.

OR

* The ECM detects that the secondary air injection pressure sensor is 5 kPa (0.7 psi) greater than the BARO sensor when the secondary air

injection pump is commanded OFF.

P2432

The ECM detects that the secondary air injection pressure sensor signal is less than 0.5 V for greater than 1 s.

P2433

The ECM detects that the secondary air injection pressure sensor signal is greater than 4.5 V for greater than 1 s.

Action Taken When the DTC Sets

DTCs P2431, P2432 and P2433 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P2431, P2432 and P2433 are Type B DTCs.

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

Secondary Air Injection System Description (See: Powertrain Management/Emission Control Systems/Air Injection/Description and Operation)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the diagnostic trouble code (DTC) information with a scan tool. Verify that DTCs P0641, P0642, P0643, P2227,

P2228, or P2229 are not set.