2010 Cadillac CTS Sedan AWD V6-3.0L Page 1977
瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit/connection tests normal,
replace the K20 ECM.
瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit/connection tests normal, replace the K20 ECM.
4. Connect a test lamp between the each of the ground circuits terminal A, and terminal B, and B+. The test lamp should illuminate on each
circuit.
瀚慖f the test lamp does not illuminate, test the suspected circuit for an open/high resistance.
5. If all circuits/connections test normal, replace the T8 ignition coil.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil
Replacement - Bank 1)
* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil
Replacement - Bank 2)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
Engine Controls
DTC P2534
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 P2534
- Ignition 1 Switch Circuit Low Voltage
Diagnostic Fault Information
Circuit/System Description
The fuel pump control module monitors the ignition voltage circuit in order to determine if the voltage is within the normal operating range.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The FPCM detects that the IGN voltage is less than 6.0 V.
Action Taken When the DTC Sets
DTC P2534 is a Type A DTC.
Conditions for Clearing the DTC
DTC P2534 is a Type A DTC.
Reference Information
Schematic Reference
Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
