2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 140Get this manual
Engine Electrical Devices:
ECT Sensor Inspection
Refer to "DTC "C15" (P0115-HL): ECT Sensor Circuit Malfunction in Section 1A (Page 1A-34)"Inspect the ECT sensor in the following procedures: 1) Remove the ECT sensorRefer to "ECT Sensor Removal and Installation (Page 1C-5)"2) Connect the ECT sensor (1) to circuit tester and place it in the oil (2) contained in pan, which is placed on stove3) Heat the oil to raise its temperature slowly and read the column thermometer (3) and the ohmmeterIf the ECT sensor ohmic valve does not change in the proportion indicated, replace it with new one
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TO Sensor Inspection
Refer to "DTC "C23" (P1651-HL): TO Sensor Circuit Malfunction in Section 1A (Page 1A-52)"
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TO Sensor Removal and Installation
Removal 1) Remove the left side coverRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D4)"2) Dismounting the TO sensor (1)3) Disconnect the coupler (2) and remove the TO sensor (1)