Suzuki GSX1300BK B-King Service Manual page 120

C15 (Use of mode select switch)
Step
1 1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. Refer to "Fuel Tank
Removal and Installation in Section 1G (Page 1G-10)".
3) Check the ECT sensor coupler (1) for loose or poor
contacts.
If OK, then measure the ECT sensor input voltage.
4) Disconnect the ECT coupler and turn the ignition switch
ON.
5) Measure the input voltage between the B/Bl wire and
ground.
If OK, then measure the input voltage between the B/Bl
wire and B/Br wire.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
ECT sensor input voltage
4.5 – 5.5 V
((+) terminal: B/Bl – (–) terminal: Ground, (+)
terminal: B/Bl – (–) terminal: B/Br)
Is the voltage OK?
Action
1
I823H1110116-01
I718H1110048-03
Engine General Information and Diagnosis:
Yes
Go to Step 2.
(A)
1A-49
No
• Loose or poor
contacts on the ECM
coupler.
• Open or short circuit
in the B/Bl or B/Br
wire.