Test Description
WARNING: This page is about a different car, the 2003 Saturn Ion 3, 2003 Saturn Ion 2, and 2003 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic procedure.
- 3 - The Engine Coolant Temperature (ECT) sensor parameter must be below the operating temperature to avoid irregular fuel pressure readings due to hot soak fuel boiling.