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Component Inspection

IG KEY: OFF, Engine: OFF
Disconnect ECT sensor connector (B-09).

Measure resistance between terminals 1 and 3 of the ECT sensor harness connector B-09.

Specification:

ECT SENSOR SPECIFICATION REFERENCE CHART

Temperature (°C (°F))	-30 (-22°F)	-20 (-4°F)	0 (32°F)	20 (68°F)	40 (104°F)	60 (140°F)	80 (176°F)	100 (212°F)	110 (230°F)
Resistance (kΩ)	26.74	15.48	5.79	2.45	1.148	0.587	0.322	0.188	0.147
Voltage (V)	4.39	4.17	3.48	2.56	1.68	1.04	0.63	0.39	0.31

(error range is 2~3%.)

Is ECT sensor within specifications?
YES
1. ECT sensor is OK.
2. Possibility of PCM malfunction.
3. Test with a new PCM and check for proper operation. If problem is corrected replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
1. Test with a new ECT sensor and check for proper operation. If problem is corrected, replace it.
2. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.