Dtc "C20" (P1752): Diff-Lock Relay Circuit Malfunction - Suzuki kq750 Service Manual

1A-47 Engine General Information and Diagnosis:

DTC "C20" (P1752): Diff-lock Relay Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
No voltage is applied to diff-lock motor, although ignition
switch is turned ON, or voltage is applied to diff-lock
motor, although ignition switch is turned OFF.
Wiring Diagram
ECM
Diff-lock relay
Troubleshooting
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent the terminal damage or terminal bend.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-13)".
Diff-lock relay
21 Y/B
B/G
ECM coupler (Harness side)
Possible Cause
• Diff-lock relay circuit open or short.
• Diff-lock relay malfunction.
• ECM malfunction.
Ignition
fuse
O/Y
Ignition
B
switch
Transfer selecting
switch
W/Bl
Br
I831G1110019-01
B831G21104014
Main
fuse
W
Diff-lock
motor
I831G1110048-02