Pinpoint Tests AB: The Low Fuel Warning Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AB: The Low Fuel Warning Indicator Is Never/Always On

Normal Operation

The low fuel indicator is on when the fuel level reaches a predetermined level of approximately 1/16 tank. The low fuel level warning indicator and the fuel gauge are controlled by the Instrument Cluster (IC) based upon the fuel level data provided by the Smart Junction Box (SJB). When the IC receives the data, the fuel gauge indicates low fuel and the IC illuminates the low fuel warning indicator.

This pinpoint test is intended to diagnose the following:

- IC



PINPOINT TEST AB: THE LOW FUEL WARNING INDICATOR IS NEVER/ALWAYS ON

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AB1 CARRY OUT THE IC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC all lamps (ALL_LAMP) active command on then off while monitoring the low fuel warning indicator.
- Does the low fuel warning indicator illuminate when commanded on and turn off when commanded off?

Yes
GO to AB2.

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

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AB2 CHECK THE FUEL GAUGE FOR CORRECT OPERATION


- Ignition ON.
- Check the fuel gauge.
- Does the fuel gauge operate correctly?

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

No
Go To Pinpoint Test B. Pinpoint Test B: Incorrect Fuel Gauge Indication

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