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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 433 (Engine Controls - Self-Diagnostics - 6.0L Bi-Fuel & CNG) >> Diagnostic Tests >> DTC P1207: Fuel Rail Pressure Output PWM Signal Not Received By Pcm >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedure.

  1. 2

    This step determines if the condition is present.

  2. 5

    This step verifies that the PCM is supplying the correct output voltage. The open circuit voltage should be 5.0 volts.
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