Suzuki GW250 Service Manual page 192

Step 1
TO sensor power supply circuit check
1) Turn the ignition switch OFF.
2) Remove the seat. (8-5)
3) Remove the TO sensor 1 and disconnect the TO sensor
coupler 2. (4-92)
4) Check for proper terminal connection to the TO sensor cou-
pler.
5) If connections are OK, turn the ignition switch ON.
6) Measure the voltage between the R wire and B/Br wire.
 09900-25008: Multi circuit tester set
 Tester knob indication: Voltage ()
 TO sensor power supply voltage:
4.5 – 5.5 V
(+ terminal: R – - terminal: B/Br)
Is check result OK?
YES Go to Step 3.
NO Go to Step 2.
Step 2
TO sensor ground circuit check
1) Measure the voltage between the R wire and ground.
 09900-25008: Multi circuit tester set
 Tester knob indication: Voltage ()
 TO sensor power supply voltage:
4.5 – 5.5 V
(+ terminal: R – - terminal: Ground)
Is check result OK?
YES Repair or replace the B/Br wire.
NO Repair or replace the R wire.
FI SYSTEM DIAGNOSIS 4-51
1
1
2
V
V