Suzuki DL650K5 Service Manual page 610

13-106 DL650K7/AK7 ('07-MODEL)
DTC "42" (C1642): WHEEL SPEED SENSOR CIRCUIT OPEN (F)
POSSIBLE CAUSE
Wheel speed sensor circuit open or short, loosen contact in
wheel speed sensor connector, input amplifier in ABS control
unit failure, etc.
Step 1
1) Turn the ignition switch to OFF.
2) Remove the air cleaner box cap. (!DL650K4 2-5)
3) Remove the ABS control unit/HU cover. (!Page 84)
4) Check the ABS control unit coupler and front wheel speed
sensor coupler for loose or poor contacts. If OK, then discon-
nect the ABS control unit coupler.
5) Check for continuity between F terminal and 5 terminal at
the ABS control unit coupler.
# 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
+ Tester knob indication: Continuity (*)
Is there continuity between F and 5?
Inspect the wire harness. (Faulty sensor wire)
YES
Faulty front wheel speed sensor
NO Go to step 2.
Step 2
1) Measure the resistance between F terminal and ground at
the ABS control unit coupler.
$ Normal value: ∞ Ω (Infinity)
) Tester knob indication: Resistance (Ω)
Is the resistance between F and ground OK?
YES Go to step 4.
NO Go to step 3.
Step 3
1) Disconnect the front wheel speed sensor coupler.
2) Measure the resistance between 2 terminal and ground at
the front wheel speed sensor coupler.
$ Normal value: ∞ Ω (Infinity)
) Tester knob indication: Resistance (Ω)
Is the resistance between 2 and ground OK?
YES Inspect the wire harness. (Faulty W/R wire)
NO Faulty front wheel speed sensor
ABS control unit coupler (Harness end)
ABS control unit coupler
(Harness end)
Sensor side