DTC 76 - Resume/ACCEL Switch Fault: Notes

1993 Chevrolet Sportvan G30, Van Passenger, 7.4 NSECTION Notes
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. However, it is still accessible from the selected car via links, so may be relevant.

The cruise ON/OFF, SET/COAST and RESUME/ACCEL switches are inputs to the fuel control portion of the PCM. These inputs allow the PCM to control and hold a requested speed. The resume/accel request signal circuit supplies ignition voltage to the PCM when resume/accel is depressed. DTC 76 will set when:

  • Cruise control is on.
  • Ignition voltage on the resume/accel request signal circuit is present for more than 25.5 seconds.

PCM will default to the PCM disallowing all cruise inputs. TCC shift schedules may be affected.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. This step determines if the resume/accel request signal circuit is shorted to voltage.
  2. This step determines if the PCM or switch is at fault.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
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