2010 Cadillac CTS Sedan AWD V6-3.0L Page 1866

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1866

DTC P2156

- Cylinder 4 Injector High Control Circuit Low Voltage

DTC P2157

- Cylinder 4 Injector High Control Circuit High Voltage

DTC P216B

- Cylinder 5 Injector High Control Circuit Low Voltage

DTC P216C

- Cylinder 5 Injector High Control Circuit High Voltage

DTC P216E

- Cylinder 6 Injector High Control Circuit Low Voltage

DTC P216F

- Cylinder 6 Injector High 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 when the above conditions are met.

Conditions for Setting the DTC

P2147, P2150, P2153, P2156, P216B, or P216E

The ECM detects the injector high voltage supply circuit is shorted to ground for greater than 2 s.

P2148, P2151, P2154, P2157, P216C, or P216F