C15" Eot Sensor Circuit Malfunction - Suzuki GSX1400 Service Manual

"C15" EOT SENSOR CIRCUIT MALFUNCTION

DETECTED CONDITION
High engine oil temp. (Low voltage – Low
resistance)
Low engine oil temp. (High voltage – High
resistance)
INSPECTION
• Remove the right frame side cover. (
1
Turn the ignition switch OFF.
Check the EOT sensor coupler for loose or poor contacts.
If OK, then measure the EOT sensor voltage at the wire
side coupler.
Disconnect the coupler and turn the ignition switch ON.
Measure the voltage between B/Bl wire terminal and
ground.
If OK, then measure the voltage between B/Bl wire termi-
nal and B/Br wire terminal.
EOT sensor voltage: 4.5 – 5.5 V
09900-25008: Multi circuit tester
Tester knob indication: Voltage (
Yes
2
Turn the ignition switch OFF.
Measure the EOT sensor resistance.
EOT sensor resistance: Approx. 61.3 kΩ Ω Ω Ω Ω at 20°C (68°F)
09900-25008: Multi circuit tester
Tester knob indication: Resistance (Ω Ω Ω Ω Ω )
Refer to page 5-11 for details.
Yes
B/Bl or B/Br wire open or shorted to ground, or poor X or Z
connection. ( 4-22)
If wire and connection are OK, intermittent trouble or faulty ECM.
Recheck each terminal and wire harness for open circuit and
poor connection. ( 4-4)
www.GSX1400FE.com
6-3)
+B/Bl – -Ground
( )
+B/Bl – -B/Br
)
No Loose or poor contacts on
the ECM coupler.
Open or short circuit in the
B/Bl wire or B/Br wire.
(White lead wire – White lead wire)
No Replace the EOT sensor
with a new one.
Replace the ECM with a new one,
and inspect it again.
ECM coupler
POSSIBLE CAUSE
• B/Bl circuit shorted to ground.
• B/Br circuit open.
• EOT sensor malfunction.
• ECM malfunction.
1
B/Br
B/Bl
2
Engine Oil
Temp.
20°C ( 68 °F)
50°C ( 122 °F)
80°C ( 176 °F)
110°C ( 230 °F)
FI SYSTEM 4-37
V
Resistance
Approx. 61.3 kΩ
Approx. 17.8 kΩ
Approx. 6.2 kΩ
Approx. 2.5 kΩ