Orlando

Fuel Gauge Malfunction

The instrument cluster displays the fuel level based on the information from the engine control module (ECM). The ECM converts the data from the fuel level sensors to a fuel level signal. The ECM sends the fuel level signal via a High Speed CAN-Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-Bus signal to the instrument cluster to display the fuel level. If the fuel level falls below 11% the instrument cluster switches the low fuel level indicator on.

Schematic Reference

Instrument Cluster Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Instrument Cluster Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool. Verify that the fuel level gauge sweeps from its low to high position.

⇒	If the fuel level gauge does not sweep, replace the P16 Instrument Cluster.

2. Command the All Indicators test ON and OFF with the scan tool. Verify that the low fuel level indicator turns ON and OFF.

⇒	If the low fuel level indicator always stays on or always off, replace the P16 Instrument Cluster.

3. If the fuel level gauge does sweep and the low fuel level indicator changes between ON and OFF, replace the K20 Engine Control Module.

1. Ignition OFF, disconnect the harness connector X2 at the K20 Engine Control Module.
2. Ignition ON, test for less than 0.3 V between either the low reference circuit terminal 33 or signal circuit terminal 9 and ground.

⇒	If greater than the specified range, test both the low reference circuit and the signal circuit for a short to voltage. If the circuits test normal, test or replace the A7 Fuel Pump and Level Sensor Assembly.

3. Ignition OFF, test for infinite resistance between either the low reference circuit terminal 33 or signal circuit terminal 9 and ground.

⇒	If less than the specified range, test both the low reference circuit and the signal circuit for an open/high resistance. If the circuits test normal, test or replace the A7 Fuel Pump and Level Sensor Assembly.

4. Ignition OFF, test for 20-300 Ω between the signal circuit terminal 9 and the low reference circuit terminal 33.

⇒	If not within the specified range, test both the signal circuit and the low reference circuit or an open/high resistance. If the circuits test normal, test or replace the A7 Fuel Pump and Level Sensor Assembly.

5. If all circuits test normal, test or replace the K20 Engine Control Module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.