Troubleshooting And Harness Schematics - MacDon R113 Installation Instructions Manual

4.2 Troubleshooting and Harness Schematics

For troubleshooting information, refer to Table
NOTE:
Pulse width modulation (PWM) valve control harness (MD #256652) is part of the harness and module assembly
(MD #256653) supplied in the kit.
Table 4.1 Troubleshooting
Problem
Symptom: The hazard and turn signal lamps are not working AND the Header ID is not recognized
Poor HC-2 connection
Symptom: The hazard lamps or one of the turn signals does not work
Poor ground connection
No power at right turn
signal
No power at left turn
signal
Symptom: No Header ID or code 0000 generated on the display
NOTE:
Once the problem is resolved, depending on the CDM software version, the header ID might appear as a "Disc" during
the initial engine start, or displayed as binary code "0001" in the upper right portion of the HEADER CUT WIDTH screen.
Both of these header ID's are correct.
R113 header is equipped
with old header harness
MD #256571
Reference voltage
problem
215276
4.1, page
Solution
Confirm HC-2 connectors are connected properly. Confirm all pins
are seated properly.
Check ground wire at pin 22, C20E-R1 (male 29-pin round
connector), on adaptor harness MD #256650.
Check power wire at pin 17, C20E-R1 (male 29-pin round
connector), on adaptor harness MD #256650.
NOTE:
To keep constant power while checking for 12V power on the
RIGHT turn signal circuit, activate the LEFT turn signal.
Check power wire at pin 6, C20E-R1 (male 29-pin round
connector), on adaptor harness MD #256650.
NOTE:
To keep constant power while checking for 12V power on the LEFT
turn signal circuit, activate the RIGHT turn signal.
Move wire from pin 13 to the pin 11 position in connector
C20B-R1.
• Check for reference voltage (+9ve) between pin 7 and pin 8
(ground connection) on adapter harness (MD #256650)
connector C20E-R1.
• Disconnect adaptor harness from the rotary disc header and
check for continuity between pins 7 and 11 on the rotary disc
header harness (MD #256586) connector C20B-R1.
• Check for continuity between pins 2 and 3 on adapter harness
connector HC-2B.
APPENDIX
21.
21
Refer to
• Refer to HC-2 in
Step 2, page 16.
• Also refer to 256650
in Figure 4.1, page
23.
Refer to 256650 on
Figure 4.1, page 23.
Refer to C20B-R1 on
Figure 4.3, page 27.
• For the adapter
harness, refer to
256650 on Figure
4.1, page 23.
• For the header
harness, refer to
256586 on Figure
4.2, page 25.
Revision A