Suzuki VL800 Service Manual page 412

14-60 VL800K5 ('05-MODEL)
Step 2
1) Turn the ignition switch OFF.
2) Measure the ECT sensor resistance.
! ECT sensor resistance:
Approx. 2.3 – 2.6 kΩ at 20 °C (68 °F)
" 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
3) Remove the ECT sensor.
4) Check the ECT sensor by testing it at the bench as shown in
the figure. Connect the ECT sensor 1 to a circuit tester and
place it in the oil 2 contained in a pan, which is placed on a
stove.
5) Heat the oil to raise its temperature slowly and read the col-
umn thermometer 3 and the ohmmeter.
! Temperature sensor specification
Engine Coolant Temp
20 °C (68 °F)
40 °C (104 °F)
60 °C (140 °F)
80 °C (176 °F)
#
* Take special care when handling the ECT sensor. It
may cause damage if it gets a sharp impact.
* Do not contact the ECT sensor and the column ther-
mometer with a pan.
Is the resistance OK?
• B/Br or B/Bl wire open or shorted to ground, or
poor D or I 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.
6) After repairing the trouble, clear the DTC using SDS tool.
($14-39)
(Terminal – Terminal)
Resistance
Approx. 2.45 kΩ
Approx. 1.148 kΩ
Approx. 0.587 kΩ
Approx. 0.322 kΩ
2
2
Wire harness side