FI SYSTEM 4-37
B/Br
B/Bl
V
Engine Oil
Resistance
Tem p.
20°C( 68°F) Approx. 61.3 kΩ
50°C (122 °F) Approx. 17.8 kΩ
80°C (176 °F) Approx. 6.2 kΩ
110°C (230 °F) Approx. 2.5 kΩ
INSPECTION
• Remove the right frame side cover. (6-3)
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
(
+B/Bl – -Ground
)
+B/Bl – -B/Br
\ 09900-25008: Multi circuit tester
W Tester knob indication: Voltage (
)
No Loose or poor contacts on
the ECM coupler.
Open or short circuit in the
B/Bl wire or B/Br wire.
Ye s
Turn the ignition switch OFF.
Measure the EOT sensor resistance.
EOT sensor resistance: Approx. 61.3 k
ΩΩ
ΩΩ
Ω at 20°C (68°F)
(White lead wire – White lead wire)
\ 09900-25008: Multi circuit tester
V Tester knob indication: Resistance (
ΩΩ
ΩΩ
Ω)
Refer to page 5-11 for details.
No Replace the EOT sensor
with a new one.
Ye s
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)
Replace the ECM with a new one,
and inspect it again.
“C15” EOT SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION POSSIBLE CAUSE
High engine oil temp. (Low voltage – Low • B/Bl circuit shorted to ground.
resistance) • B/Br circuit open.
Low engine oil temp. (High voltage – High • EOT sensor malfunction.
resistance) • ECM malfunction.
1
1
2
ECM coupler
2
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