Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
DTC P0230
| 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 | - | - |
| 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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DTC P2632
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Battery Voltage - Relay Switch Side | 1 | 3 | - | - |
| Fuel Pump Supply Voltage | 1 | 3 | 2 | - |
| Fuel Pump Relay Control | P2632 | P2632 | P2632 | - |
| Fuel Pump Relay Ground | - | P2632 | - | - |
| Fuel Pump Ground | - | 3 | - | - |
| 1
Open fuel pump fuse 2 Fuel pump operates continuously, then discharged battery 3 Fuel pump operates will not operate |
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