Fuel Pressure Control System
- Fuel pressure control system uses a fuel pressure control Vacuum Switching Valve (VSV). Fuel pressure control VSV is supplied voltage through EFI main relay.
- The Engine Control Module (ECM) will activate VSV by controlling ground circuit for approximately 90-180 seconds when restarting engine at normal operating temperature. Locate and remove fuel pressure control VSV. See FUEL PRESSURE CONTROL VSV LOCATION table.NOTE: Fuel pressure control VSV may also be identified using illustration in the THEORY/OPERATION - 2.4L article or wire color. See wiring diagram in WIRING DIAGRAMS article.FUEL PRESSURE CONTROL VSV LOCATION
Application Location 2.4L Near Center Of Valve Cover - Using ohmmeter, check resistance and for continuity between fuel pressure control VSV electrical terminals. Replace fuel pressure control VSV if no continuity exists or resistance is not within specification. See FUEL PRESSURE CONTROL VSV RESISTANCE SPECIFICATIONS table.
- Ensure no continuity exists between each electrical terminal and fuel pressure control VSV body. Replace fuel pressure control VSV if continuity exists between electrical connector and fuel pressure control VSV body.
- Check fuel pressure control VSV operation by applying air pressure to designated area and checking air passage, and then applying battery voltage and ground and retesting. See Fig 1. Replace fuel pressure control VSV if defective.
FUEL PRESSURE CONTROL VSV RESISTANCE SPECIFICATIONS
| Application | Ohms |
|---|---|
| Pickup | 30-50 |