Diagnostic Aids

DTC sets due to a fuel level that does not change by an expected amount ECM calculates over a period of driving time.

Use scan tool to monitor FUEL LEVEL while raising vehicle from back. Percentage should change indicating a moving float.

Possible causes of static fuel level:

• Fuel sender float stuck or perforated.
• Fuel sender sweep arm stuck.

Fuel level sensor resistance should be 19 ohms with float at top position (full tank) through 251 ohms with float at bottom position (empty tank).