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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Engine Controls And Fuel - 6.0L (L96) - DTC P0351 To DTC P2636 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Fuel Pump Electrical Circuit Diagnosis >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Battery Voltage - Relay Switch Side 1 2 - -
Fuel Pump Supply Voltage 1 2 3 -
Fuel Pump Relay Control P0628 P0629 P0629 -
Fuel Pump Relay Ground - P0629 - -
Fuel Pump Ground - 2 - -
  1. Open fuel pump fuse, engine cranks but does not run
  2. Engine cranks but does not run
  3. Fuel pump operates continuously, causing a discharged battery and a no crank condition
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