2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1048
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Install fuse that supplies B+ to terminal 56 X2 of the ECM.
Caution: Do NOT use the low reference circuit in the component harness connector for this test. Damage to the control module may occur
due to excessive current draw.
5. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 4 and ground.
瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and
the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.
6. Test for 4.8-5.2 V between the signal circuit terminal 5 and the ground circuit terminal 2.
瀚慖f less than the specified range, test the signal circuit for an open/high resistance or a short to ground. If the circuit/connections test
normal, replace the K20 ECM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit/connections test normal, replace the K20
ECM.
7. Ignition OFF, connect the red lead of the J 38522 to the signal circuit terminal 5 at the B75 MAF sensor harness connector. Connect the
battery voltage supply to B+, and the black lead to ground.
8. Set the J 38522 Signal switch to 5 V, the Frequency switch to 5K, and the Duty Cycle switch to Normal.
9. Ignition ON, observe the scan tool MAF Sensor Hz parameter. The parameter should be between 4,950-5,050 Hz.
瀚慖f the parameter is not within the specified range, replace the K20 ECM.
10. If all circuits/connections test normal, replace the B75 MAF sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LF1) (See: Powertrain Management/Computers and Control
Systems/Air Temperature Sensor ( Ambient / Intake )/Service and Repair)Mass Airflow Sensor with Intake Air Temperature Sensor
Replacement (LAU) (See: Powertrain Management/Computers and Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service
and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and
programming
P0106
DTC P0106 (LF1)
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 Descriptor
DTC P0106
- Manifold Absolute Pressure (MAP) Sensor Performance
Diagnostic Fault Information
Typical Scan Tool Data
