E0133-03-Hydraulic Reservoir Level Shorted To High Source (A.10.A.95.93 - G.30.B.54) - New Holland CX720 Repair Manual

DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
E0133-03-Hydraulic Reservoir Level Shorted To High Source
(A.10.A.95.93 - G.30.B.54)
E0133-03 - Hydraulic Reservoir Level Shorted To High Source
Cause:
The hydraulic reservoir level switch (S33) circuit is shorted to 12 volts.
Possible failure modes:
1. Switch supply wiring shorted to 12 volts.
2. Controller internal failure (internal regulator failure).
Solution:
1. Enter the Infoview monitor - Dealer Diagnostics screen.
Select "CCM2" sub menu.
Select "Hydraulic reservoir level" and check voltage range.
The proper voltage range for the hydraulic reservoir level switch is - 1.8 volts or less, oil level okay.
The proper voltage for the hydraulic reservoir level switch when oil level is low is approximately 8.3 volts.
A. If the voltage reading is high out of range (>10 volts), continue with Step 2.
B. If the voltage reading is within the proper limits, the shorted wire may not be powered up at this time.
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 high. Disconnect the hydraulic reservoir level switch connector
X104 at the reservoir.
A. If the voltage drops back into the proper range the short is in the switch, or switch wiring. Replace the
switch.
B. If the voltage remains high on Infoview monitor continue with Step 3.
3. The voltage reading on the Infoview monitor is high. Disconnect the gearbox harness from the main frame
harness at connector X011.
A. If the voltage drops back into the proper range the short is in the gearbox harness between connector
X011 pin C and connector X104 pin B wire 424 yellow. Locate and repair.
B. If the voltage remains high on Infoview monitor the short circuit is somewhere between connector X011 pin
C and connector X016 pin J2-39 on CCM2 in the main frame harness wire 424 yellow. Locate and repair.
4. Operate the machine while monitoring InfoView display.
A. If no high out of range readings are indicated, erase the fault code and continue operation.
Wiring harness - Electrical schematic frame 07 (A.30.A.88-C.20.E.07)
Wiring harness - Electrical schematic frame 08 (A.30.A.88 - C.20.E.08)
Wiring harness - Electrical schematic frame 10 (A.30.A.88 - C.20.E.10)
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