1C-3 Engine Electrical Devices:
ECT Sensor Inspection
B931H21306007
Refer to “DTC “C15” (P0115-H/L): ECT Sensor Circuit
Malfunction: in Section 1A”.
Inspect the ECT sensor in the following procedures:
1) Remove the ECT sensor. Refer to “ECT Sensor
Removal and Installation (Page 1C-2)”.
2) 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.
3) Heat the oil to raise its temperature slowly and read
the column thermometer (3) and the ohmmeter.
If the ECT sensor ohmic valve does not change in
the proportion indicated, replace it with a new one.
CAUTION
!
Do not contact the ECT sensor and the
column thermometer with a pan.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Temperature sensor specification
4) Install the ECT sensor. Refer to “ECT Sensor
Removal and Installation (Page 1C-2)”.
TO Sensor Inspection
B931H21306008
Refer to “DTC “C23” (P1651-H/L): TO Sensor Circuit
Malfunction: in Section 1A”.
TO Sensor Removal and Installation
B931H21306009
Removal
1) Remove the air cleaner box. Refer to “Air Cleaner
Box Removal and Installation: in Section 1D”.
2) Disconnect the coupler (1) and remove the TO
sensor (2).
Installation
Install the TO sensor in the reverse order of removal.
Pay attention to the following point:
• When installing the TO sensor, bring the “UPPER”
letters and arrow mark “A” upward.
ISC Valve Inspection
B931H21306010
Refer to “DTC “C40” (P0505-H/L): ISC Valve Circuit
Malfunction: in Section 1A”.
Temperature Standard resistance
20 °C (68 °F) Approx. 2.45 kΩ
50 °C (122 °F) Approx. 0.811 kΩ
80 °C (176 °F) Approx. 0.318 kΩ
110 °C (230 °F) Approx. 0.142 kΩ
(A)
2
1
3
I718H1130014-01
1
2
I931H1130005-01
“A”
I931H1130006-01
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