2010 Cadillac Truck SRX FWD V6-3.0L Page 1874
DTC P1248, P1249, P124A, P124B, P124C, or P124D (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 Descriptors
DTC P1248
- Cylinder 1 Injector High Control Circuit Shorted to Control Circuit
DTC P1249
- Cylinder 2 Injector High Control Circuit Shorted to Control Circuit
DTC P124A
- Cylinder 3 Injector High Control Circuit Shorted to Control Circuit
DTC P124B
- Cylinder 4 Injector High Control Circuit Shorted to Control Circuit
DTC P124C
- Cylinder 5 Injector High Control Circuit Shorted to Control Circuit
DTC P124D
- Cylinder 6 Injector High Control Circuit Shorted to Control Circuit
Diagnostic Fault Information
Circuit/System Description
The engine control module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel
injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits
and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is
disabled.
Conditions for Running the DTC
