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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1170 (Engine Controls Diagnosis - 6.0L - Alternative Fuels (DTC P0005-DTC P2665)) >> Diagnosis >> DTC P1207: Fuel Injector Control Module Sensor Signal Circuit 1 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The fuel injector control module (FICM) monitors the compressed natural gas (CNG) fuel tank pressure (FTP) sensor, the fuel tank temperature (FTT) sensor, and the fuel rail temperature (FRT) sensor. The FTP, FTT, and FRT sensor values, and FICM diagnostic status, is communicated to the powertrain control module (PCM) by 2 pulse width modulated (PWM) circuits.

This DTC sets when the sensor value PWM output signal is not received by the PCM.

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