New Holland WorkMaster 50 Service Manual page 767

Electrical systems - FAULT CODES
DTC 144-03-Compared camshaft and crankshaft speed sensor
values are not plausible
Control Module : ECU
Context:
The Engine Control Unit (ECU) A-9000 monitors the camshaft position sensor B-9017 and the crankshaft position
sensor B-9007 characteristics for angle, speed determination, signal plausibility, and quality. If the ECU A-9000 de-
termines that the offset between the crankshaft signal and the expected camshaft first edge is less or greater than
10.00 ° for longer than four consecutive cycles, this fault will occur.
Possible failure modes:
1. Faulty camshaft position sensor B-9017, improperly mounted or not fully seated.
2. Faulty crankshaft position sensor B-9007, improperly mounted or not fully seated.
3. Faulty camshaft tone wheel, loose or damaged.
4. Faulty crankshaft tone wheel, loose or damaged.
5. Faulty engine timing, incorrectly timed.
6. Faulty ECU A-9000, software.
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