New Holland CX720 Repair Manual page 2150

short to ground back to the engine ECU, connector X192, pin 21. Trace the fault and repair the wiring as
required. If the wiring to pin 1 is okay continue with step B.
B. With the key start OFF, continuity to ground should be indicated on pin 2 of sensor connector (ground
common line). If no ground is indicated, check for an Open circuit back to the engine ECU, connector
X192, pin 4. Trace fault and repair wiring as required. With the key start ON, check pin 2 for a short to
+12 V. If +12 V is indicated trace fault and repair wiring to pin2.
Series 1206 and above
Wiring harness - Electrical schematic frame 04 (A.30.A.88-C.20.E.04)
POWER PRODUCTION - AIR INTAKE SYSTEM
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