P0611

DTC P0611

DESCRIPTION
The fuel injector control module (FICM) monitors the compressed natural gas (CNG) fuel tank pressure (FTP) sensor voltage, the fuel tank temperature (FTT) sensor voltage, and the fuel rail temperature (FRT) sensor voltage. The FTP, FTT, and FRT sensor values, and diagnostic data, is communicated to the powertrain control module (PCM) by 2 pulse width modulated (PWM) circuits. This DTC sets when the PCM does not receive any PWM signals from the FICM.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0611 Fuel Injector Control Module Performance

TEST DESCRIPTION

Step 1 - Step 10:

The number below refers to the step number on the diagnostic table.
2. This step verifies that the condition is active.
3. This step verifies that the ignition voltage circuit to the FICM is OK. If the ignition voltage circuit is open, DTCs P1207, and P1209 may also be set.