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Home >> Chevrolet >> 2003 >> Cavalier Base, 2D Coupe, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls Self-Diagnostics - 2.2L Bi-Fuel) >> Diagnostic Tests >> DTC P1209: Fuel Injector Control Module PWM Output Signal Failure >> Description

DTC P1209: Fuel Injector Control Module PWM Output Signal Failure: Description

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The Fuel Injector Control Module (FICM) monitors the CNG fuel injector circuits. The CNG fuel injector circuit status and internal FICM diagnostic data, is communicated to the Powertrain Control Module (PCM) by a Pulse Width Modulated (PWM) circuit. This DTC sets when the FICM diagnostic output PWM signal is not received by the PCM.

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