Thursday, September 16, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 2013

2010 Cadillac Truck SRX AWD 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

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