FUEL SENSOR FAULTED HIGH (BCM)

For a complete wiring diagram Refer to Section 8W

• When Monitored:

  Ignition on and battery voltage above 10.4 volts.

• Set Condition:

  The fuel level sensor signal voltage at the PCM goes above 4.9 volts for more than 90 seconds.

Diagnostic Test

• Go To2

• Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

NOTE: Remove the jumper wire before continuing.

• Replace the Fuel Level Sensor.
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

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• Go To 4

• Go To 8

• Go To 12

WARNING: When the engine is operating, do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.

• Repair the short to voltage in the (N4) Fuel Level Signal circuit.
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

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CAUTION: Do not probe the pcm harness connectors. Probing the pcm harness connectors will damage the pcm terminals resulting in poor terminal to pin connection. Install miller special tool #8815 to perform diagnosis.

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• Repair the open in the (N4) Fuel Level Signal circuit.
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

CAUTION: Do not probe the pcm harness connectors. Probing the pcm harness connectors will damage the pcm terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

• Go To7

• Repair the open in the (K900) Sensor ground circuit.
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

• Replace and program the Powertrain Control Module per Service Information.
• Perform POWERTRAIN VERIFICATION TEST VER - 5. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

• Repair the short to voltage in the (N4) Fuel Level Signal circuit.
• Perform BODY VERIFICATION TEST VER -1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

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• Go To10

• Repair the open in the (N4) Fuel Level Signal circuit.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

• Go To11

• Repair the open in the (K310) Sensor ground circuit.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

NOTE: Before continuing, check the BCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

• Replace and program the Body Control Module per Service Information.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

• Repair the short to voltage in the (N4) Fuel Level Signal circuit.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

• Go To13

• Go To14

• Repair the open in the (K304) Fuel Level Signal circuit.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

• Go To15

• Repair the open in the (K300) Sensor ground circuit.
• Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

NOTE: Before continuing, check the BCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

• Replace and program the Body Control Module per Service Information.
• Perform BODY VERIFICATION TEST VER - 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) .