E0154-04-Fuel Level Sensor Shorted To Low Source (B.20.A.95.90 - G.30.B.53) - New Holland CX720 Repair Manual

E0154-04-Fuel Level sensor Shorted To Low Source (B.20.A.95.90 -
G.30.B.53)
E0154-04 - Fuel Level sensor Shorted To Low Source
Cause:
The fuel level sensor (R-01) circuit is shorted to ground.
Possible failure modes:
1. Sensor supply wiring shorted to ground.
2. Controller internal failure (internal regulator failure).
Solution:
1. Enter the Infoview monitor - "Diagnose info" screen.
Select "Engine" sub menu.
Select "Fuel Level sensor" and check voltage range.
The proper voltage range is 0.5 - 4.9 volts.
A. If the voltage reading is low out of range (0 - 0.5 volts), continue with Step 2.
B. If the voltage reading is within the proper limits, continue the troubleshooting at step 4.
NOTE: Visually inspect the wiring harness and connectors. Verify that the connector was fully installed. Inspect
the terminals and wires at the connector for pushed back or corroded terminals or damaged wires. Flex the
harnesses involved to reveal intermittent breaks or shorts in the wiring concerned.
2. The voltage reading on the Infoview monitor is low less than 0.5 volts. Disconnect the fuel level sensor con-
nector X184.
A. If the voltage increases to 4.9 - 5.2 volts, the short is in the sensor or sensor wiring. Replace the sensor.
B. If the voltage remains low, the short is in the main frame (MF) harness between connector X184 pin 1 and
connector X016 pin J2-17 wire 427 yellow. Locate the short and repair.
3. Operate the machine while monitoring Infoview monitor.
A. If no high out of range readings are indicated, erase the fault code and continue operation.
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
2 4/7/2006
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