E0207-05-Engine Throttle Motor Line Disconnected (B.20.A.06.81 - G.30.B.50); Cx720, Cx740, Cx760, Cx780, Cx820 - New Holland CX720 Repair Manual

E0207-05-Engine Throttle Motor Line Disconnected (B.20.A.06.81 -
G.30.B.50)

CX720, CX740, CX760, CX780, CX820

E0207-05 - Engine Throttle Motor Line Disconnected
Cause:
The engine throttle motor (M-13) circuit open, or shorted to ground.
Possible failure modes:
1. Supply wiring damaged.
2. Bad motor.
3. Controller internal failure (internal regulator failure).
Solution:
1. This is an H-bridge-controlled circuit (refer to Rotary screen Screen brush - Logical diagram (B.50.A.58.60 -
C.20.B.72)). The Rotary screen brush motor (M27) circuit is paired with the engine throttle motor (M13) circuit,
and the module switches between these two circuits using the Throttle/Brush relay K-15. Because these circuits
are connected and driven from the same module outputs, the troubleshooting procedure must consider both
circuits at the same time.
Enter the Infoview monitor - service info screens
Record and erase service history
Enter the Infoview monitor - Diagnose Info screens. Select CCM2, and scroll down to select "Rotary Screen
Brush motor". Manually operate the motor in both directions.
Start the combine, and operate the engine throttle in both directions.
Record in which direction(s) each circuit operates.
Reload error history. Check for fault codes 0172-06 and 0206-05 (Rotary screen brush motor) and fault codes
0173-06 and 0207-05 (Throttle motor).
Use the following table to determine the location of the fault.
Symptom Errors
0172-06
Rotary screen X
brush motor
operates in 1
direction only
Rotary screen
brush motor
and Throttle
motor (7.5L
mechanical
engine only)
operate in 1 di-
rection only
Rotary screen
brush motor
does not op-
erate in either
direction
Throttle mo-
tor (7.5L me-
chanical en-
gine only) op-
erates in 1 di-
rection only
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
0173-06
X
0206-11 0207-11
X
X X
X
X
X
2 4/7/2006
B.20.A / 97
Go to step 2 Motor
up
Go to step 3 Short
ground
Go to step 6 Short
ground
Go to step 10 Open
Go to step 18 Short
ground
Go to step 19 Motor
up
Go to step 20 Short
ground
bound
to
to
to
bound
to