Pinpoint Test K: The Low Fuel Warning Indicator Is Never On

Instrumentation and Warning Chimes

Pinpoint Tests

Pinpoint Test K: The Low Fuel Warning Indicator Is Never On

Normal Operation

The low fuel warning indicator illuminates when the Instrument Cluster (IC) calculation for the Distance To Empty (DTE) reaches 80 km (50 miles) or less, or approximately one-eighth of the fuel capacity. The DTE is calculated internally by the IC from data received from the PCM and the fuel gauge. When the IC receives the data and determines that the remaining fuel is 80 km (50 miles) or less, the fuel gauge indicates low fuel and the IC turns on the low fuel warning indicator. If the IC detects a fault in the fuel input (circuitry or fuel pump module), the IC defaults the fuel gauge to the empty (E) stop position and turns on the low fuel warning indicator.

This pinpoint test is intended to diagnose the following:

- IC


PINPOINT TEST K: THE LOW FUEL INDICATOR IS NEVER ON

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K1 CARRY OUT THE IC INDICATOR LAMP ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC low fuel (LOFUELL) active command. Command the low fuel warning indicator on and off. Observe the low fuel warning indicator.
- Does the low fuel warning indicator illuminate when commanded on and turn off when commanded off?

Yes
GO to K2.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Service and Repair. TEST the system for normal operation.

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K2 CHECK THE FUEL GAUGE OPERATION


- Observe the fuel gauge operation.
- Does the fuel gauge indicate empty?

Yes
INSTALL a new IC. REFER to Instrument Cluster (IC) Service and Repair. TEST the system for normal operation.

No
GO to Pinpoint Test B. Pinpoint Test B: Incorrect Fuel Gauge Indication

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