TM 5-3805-294-23-1
FIELD MAINTENANCE
DTC 157.03 - FUEL RAIL PRESSURE SIGNAL OUT OF RANGE HIGH
INITIAL SETUP:
References (cont.)
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
Volume 3, WP 0345
(Volume 5, WP 0796, Table 2, Item 119)
Volume 3, WP 0369
Accessory Kit, MSD Electronic Equipment
Volume 3, WP 0429
(Volume 5, WP 0796, Table 2, Item 2)
Volume 4, WP 0508
Multimeter, Digital
Volume 4, WP 0509
(Volume 5, WP 0796, Table 2, Item 77)
Volume 4, WP 0510
Probe Set, Standard
Volume 4, WP 0511
(Volume 5, WP 0796, Table 2, Item 91)
Volume 5, WP 0800
Test Set, MSD Electronic Systems
(Volume 5, WP 0796, Table 2, Item 116)
Equipment Condition
Machine safely parked and shut down
Personnel Required
(TM 5-3805-294-10). (Volume 5, WP 0794)
Construction Equipment Repairer 91L (2)
Test Equipment Setup for MSD and Service
ADVISOR. (Volume 3, WP 0375)
References
TM 5-3805-294-10 (Volume 5, WP 0794)
Troubleshooting Sequence
DTC 3509.03
DTC 157.03
When DTC is Displayed
Whenever the ignition is ON and the error is active.
Related Information
The fuel rail pressure input voltage corresponds to a pressure that is higher than what is physically possible for fuel
rail pressure.
Output from this supply comes out of connector J3 of the ECU.
Alarm Level
STOP. Note: The alarm level is WARNING on redundant ECU applications.
Control Unit Response:
The ECU will derate the engine until it is running at 50% of full power.
The ECU will command the high-pressure fuel pump to a default pressure of 200 MPa (29,000 psi).
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