Invalid Engine Stop Req, Shorted To High Source - New Holland CX720 Repair Manual

0469.3-INVALID ENGINE STOP REQ, SHORTED TO HIGH SOURCE

(SERVICE TOOL FAULT CODE 53) (B.20.A.92 - G.30.B.54)
CX840
0469.3 - INVALID ENGINE STOP REQ, SHORTED TO HIGH SOURCE (SERVICE TOOL FAULT CODE 53)
Context:
Engine enabled - no restriction on fuel or speed
Cause:
Vehicle ECU error, invalid engine stop request.
Possible failure modes:
1. Conflict between vehicle ECU and engine ECU software
2. Vehicle ECU (CCM2) hardware functionality
Solution:
1. Check the compatibility between the vehicle ECU and engine ECU software.
NOTE : If new software has been downloaded into either the vehicle ECU or engine ECU check that the level
is suitable for use with that machine configuration.
A. Download the correct level of software into the vehicle ECU and into the engine ECU. Operate the engine.
If the fault has cleared continue with vehicle operation.
B. If the fault re-occurs continue with step 2.
2. Check CCM2 controller
A. Check the hardware of the CCM2 controller. Remove and inspect the connectors, check the installation
of the controller to the vehicle frame, check the ground connections for the controller and check the power
feeds from fuse F-36 and fuse F-37. Repair/replace any damaged items.
B. Check the software installed in the controller on the InfoView screen. If the InfoView is indicating software
installed and has no CCM2 ECU errors, download the correct level software again into the controller.
Operate the engine, if the error re-occurs substitute the CCM2 controller.
NOTE: If CCM2 ECU errors are indicated rectify these errors first. Refer to the CCM2 fault code charts.
Series 1206-1347
Wiring harness - Electrical schematic frame 21 (A.30.A.88-C.20.E.21)
Series 1348 and above
Wiring harness - Electrical schematic frame 28 (A.30.A.88-C.20.E.28)
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
2 4/7/2006
B.20.A / 235