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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 >> DTC P2632, P2633, P2634: Fuel Transfer Pump Relay Control Circuit >> 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 3 - -
Secondary Fuel Pump Supply Voltage 1 3 2 -
Secondary Fuel Pump Relay Control P2633, P2632 P2632, P2633 P2634 -
Secondary Fuel Pump Relay Ground - P2632, P2633 - -
Secondary Fuel Pump Ground - 3 - -
1. Open fuel pump fuse
2. Secondary Fuel Pump operates continuously, then discharged battery
3. Secondary Fuel Pump operates will not operate
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