2010 Cadillac Truck SRX FWD V6-3.0L Page 2013

2010 Cadillac Truck SRX FWD V6-3.0L Page 2013

瀚慖f greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the K20 ECM.

5. Install a 3 A fused jumper wire between the signal circuit terminal 3 and the 5 V reference circuit terminal 1. Verify the scan tool BARO

parameter is greater than 127 kPa (18.4 psi).

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K20 ECM.

6. If the circuits test normal, replace the B17 BARO sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Throttle Inlet Absolute Pressure Sensor Replacement (LF1) (See: Powertrain Management/Computers and Control Systems/Absolute

Pressure Sensor/Service and Repair) for BARO sensor replacement

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P2228

DTC P2227-P2229 or P2230 (LF1, LFW)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P2227

- Barometric Pressure (BARO) Sensor Performance

DTC P2228

- Barometric Pressure (BARO) Sensor Circuit Low Voltage

DTC P2229

- Barometric Pressure (BARO) Sensor Circuit High Voltage

DTC P2230

- Barometric Pressure (BARO) Sensor Circuit Erratic

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description