LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P1639: 5-Volt Reference 2 Circuit >> Description

DTC P1639: 5-Volt Reference 2 Circuit: Description

The Powertrain Control Module (PCM) uses the 5-volt reference 2 circuit as a sensor feed for the Fuel Tank Pressure (FTP) sensor. The PCM monitors the voltage on the 5-volt reference 2 circuit. If the voltage is out of tolerance, the PCM will set DTC P1639.

scientia non olet · About LEMON Manuals