Test Description

WARNING: This page is about a different car, the 1995 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

Injector fuses are located in the underhood electrical center.
Performing an injector balance test will determine which injector circuit is faulty. See SYSTEM/COMPONENT TESTS article in this section.
See mini-schematic to determine which fuse powers injector banks.
When checking injector resistance, injector should be cold.

Fig 1: Code 18 Schematic (Corvette) Injector Circuit

Fig 2: Code 18 Diagnostic Flow Chart (Corvette) Injector Circuit