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Electrical motor - Unidentified failure (C.20.B.82 - G.30.B.46)
AFX8010
E0203-11 - Transmission Shift Motor
Cause:
The transmission shift motor M-02 circuit indicates high current draw.
Possible failure modes:
1.
Circuit connection shorted to ground.
2.
Excessive mechanical load on motor.
3.
Controller internal failure (internal regulator failure).
Solution:
1.
This is an H-bridge controlled circuit, which reverses the power and ground connections to the transmission
shift motor in order to move it in either direction. The CCM module monitors both sides of the circuit during
operation, and issues one or both fault codes, depending on the type of failure detected. Use the following
procedure to determine the location of the fault.
Step
1
Enter the Universal Display Plus "ERROR" screen. Record the error list, and then select
"CLEAR". Clear all errors from the CCM2 module.
2
Enter the Universal Display Plus "DIAG" screen. Select the "TRANSMISSION" sort menu, and
select "SHIFT MTR". Start the combine, and use the "COMMAND" and "ENGAGE" functions to
manually shift the transmission in each direction. Record in which directions the transmission
shift motor operates.
3
Enter the Universal Display Plus "ERROR" screen, and depress the "REFRESH" button to
update the error history. Check for fault codes
E0171 - Transmission Shift Current Sense
and
E0203-11 - Transmission Shift Motor
.
4
Use the appropriate result below to determine the location of the fault.
A.
If the transmission shift motor operates in one direction only, and the fault code
E0171 - Transmission Shift Current Sense
is displayed, continue with step 2.
B.
If the transmission shift motor operates in one direction only, and both fault codes
E0171 - Transmission Shift Current Sense
and
E0203-11 - Transmission Shift Motor
are displayed, continue with step 3.
C.
If the transmission shift motor does not operate in either direction, and the fault code
E0171 - Transmission Shift Current Sense
is displayed, continue with step 2.
D.
If the transmission shift motor does not operate in either direction, and both fault codes
E0171 - Transmission Shift Current Sense
and
E0203-11 - Transmission Shift Motor
are displayed, continue with step 8.
E.
If the transmission shift motor does not operate in either direction, and no fault codes are displayed,
continue with step 13.
2.
The transmission shift mechanism is mechanically bound up, resulting in high current draw.
POWER TRAIN - TRANSMISSION Mechanical
9680 1 27/05/2004
C.20.B / 78
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