Diagnostic Fault Information
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Fuel Pump Electrical Circuit Diagnosis
| 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 | P0230 | P0230 | P0230 | - |
| Fuel Pump Relay Ground | P0230 | P0230 | P0230 | - |
| Fuel Pump Ground | - | 2 | - | - |
| 1
Open fuel pump fuse, cranks no start 2 Cranks no start 3 Fuel pump operates continuously, then discharged battery |
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