Suzuki GSX-R1000 2007, Service Manual

Page: 204 / 549

FI SYSTEM DIAGNOSIS 4-49
“C15” (P0115-H/L) ECT SENSOR CIRCUIT MALFUNCTION
INSPECTION
Step 1 (When indicating C15:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (
5-3)
3) Check the ECT sensor coupler for loose or poor contacts.
If OK, then measure the ECT sensor voltage at the wire side
coupler.
4) Disconnect the coupler and turn the ignition switch ON.
5) Measure the voltage between B/Bl wire terminal
and
ground.
6) If OK, then measure the voltage between B/Bl wire terminal
and B/Br wire terminal .
DETECTED CONDITION POSSIBLE CAUSE
C15 Output voltage is not within the following
range.
0.15 V
Sensor voltage < 4.85 V
• ECT sensor circuit open or short
• ECT sensor malfunction
• ECM malfunction
P0115
H
Sensor voltage is higher than specified
value. • ECT sensor circuit open or ground circuit open
• ECT sensor circuit shorted to ground
L
Sensor voltage is lower than specified
value.
ECM
E2
ECT
B/Br
ECT sensor
B/BI
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.
1