Fuel Injector Wiring Harness: Service and Repair

FUEL CHARGING WIRING HARNESS

REMOVAL

WARNING: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel related components. Highly flammable mixtures are always present and may ignite. Failure to follow these instructions may result in personal injury.

1. Disconnect the battery ground cable.
2. Remove the upper intake manifold.







3. Disconnect the following electrical connectors.
- 42-pin engine bulkhead connector
- 16-pin connector
- 8-pin connector
- A/C pressure switch







4. Separate the wiring harness from the dash panel.







5. Disconnect the intake manifold runner control (IMRC) actuator electrical connector.







6. Disconnect the RH heated oxygen sensor (HO2S) electrical connector and the 16-pin electrical connector.







7. Disconnect the crankshaft position (CKP) sensor electrical connector.







8. Disconnect the camshaft position (CMP) sensor electrical connector.







9. NOTE: Right side shown, left side similar.

Disconnect the six fuel injector electrical connectors.







10. Disconnect the cylinder head temperature (CHT) sensor electrical connector on the back of the left cylinder head.







11. Disconnect the engine oil pressure sender electrical connector.







12. Disconnect the fuel pressure sensor electrical connector.







13. Disconnect the LH heated oxygen sensor (HO2S) electrical connector.







14. Disconnect the 16-pin electrical connectors on the back of the left cylinder head.
15. Remove the wiring harness:
- Separate the wiring harness from the fuel supply manifold.

INSTALLATION
1. To install, reverse the normal procedure.