Thursday, February 20, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1836

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1836



* B107 APP sensor 1 terminal 4



* B107 APP sensor 2 terminal 5



瀚慖f greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the



circuit/connections test normal, replace the K20 ECM.



Note: The 5-volt reference circuit voltage can be within the specified range with a high resistance in the circuit. If this condition is



suspected, refer to Diagnostic Aids.



3. Ignition ON, test for 4.8-5.2 V between the appropriate 5-volt reference circuit listed below and ground.



* B107 APP sensor 1 terminal 2



* B107 APP sensor 2 terminal 1



瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or open/high resistance. If the circuit/connections test



normal, replace the K20 ECM.



瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit/connections test normal, replace the



K20 ECM.



4. Observe the scan tool APP sensor 1 voltage parameter. Verify the voltage is less than 0.3 V.



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



K20 ECM.



5. Observe the scan tool APP sensor 2 voltage parameter. Verify the voltage is less than 0.3 V.



瀚慖f greater than the specified range, test the signal circuit terminal 6 for a short to voltage. If the circuit/connections test normal, replace the



K20 ECM.



6. Connect a 3 A fused jumper wire between the APP sensor 1 signal circuit terminal 3 and the 5-volt reference circuit terminal 2. Verify the



APP sensor 1 voltage parameter is greater than 4.8 V.



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/connections test



normal, replace the K20 ECM.



7. Connect a 3 A fused jumper wire between the APP sensor 2 signal circuit terminal 6 and the 5-volt reference circuit terminal 1. Verify the



APP sensor 2 voltage parameter is greater than 4.8 V.



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/connections test



normal, replace the K20 ECM.



8. If all circuits/connections test normal, test or replace the B107 accelerator pedal assembly.



Repair Instructions



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



* Accelerator Pedal with Position Sensor Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Accelerator



Pedal/Service and Repair/Accelerator Pedal with Position Sensor Assembly Replacement)



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



programming, and setup



P2128



DTC P2122, P2123, P2127, P2128, or P2138 (Without 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 P2122



- Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

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