Suzuki Intruder VZR1800 Service Manual page 243

Step 2
1) Turn the ignition switch OFF.
2) Disconnect the ECT sensor coupler.
3) Measure the ECT sensor resistance.
$ ECT sensor resistance:
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Refer to page 8-9 for details.
Is the resistance OK?
• B/Bl or B/Br wire open or shorted to ground, or
poor 0 or S connection.
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
YES
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Replace the ECT sensor with a new one.
4) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
$ ECT sensor specification
Engine Oil Temp
20 °C (68 °F)
50 °C (122 °F)
80 °C (176 °F)
110 °C (230 °F)
Approx. 2.45 kΩ at 20 °C (68 °F)
(Terminal – Terminal)
Resistance
Approx. 2.45 kΩ
Approx. 0.811 kΩ
Approx. 0.318 kΩ
Approx. 0.142 kΩ
FI SYSTEM DIAGNOSIS
2
2
ECM coupler (Harness side)
(Black)
5-49
(Gray)