2010 Cadillac Truck SRX FWD V6-3.0L Page 1379
DTC P0276
- Cylinder 6 Injector Control Circuit Low Voltage
DTC P0277
- Cylinder 6 Injector Control Circuit High Voltage
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
* The engine is running.
* The ignition voltage is between 11-18 V.
* The DTCs run continuously once the above conditions are met.
Conditions for Setting the DTC
P0201, P0202, P0203, P0204, P0205, or P0206
The ECM detects the injector high voltage supply circuit or the injector high voltage control circuit is open for greater than 2 s.
P0261, P0264, P0267, P0270, P0273, or P0276
The ECM detects the injector high voltage control circuit is shorted to ground for greater than 2 s.
P0262, P0265, P0268, P0271, P0274, or P0277
The ECM detects the injector high voltage control circuit is shorted to voltage for greater than 2 s.
Action Taken When the DTC Sets
DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277
