Pinpoint Test ECT - Engine Coolant Temperature Sensor: Notes

NOTE: Enter this test only when a Code 09 is displayed during QUICK TESTS procedure or when directed here from another PINPOINT TEST. To prevent unnecessary diagnosis, inspect coolant level, oil level, cooling fan, thermostat, and airflow to radiator before testing.

Fig 1: Identifying ECT Sensor Circuits

ECT CIRCUIT PIN IDENTIFICATION

Circuit		ECA Pin	BOB Pin	Wire Color
1.3L
ECT		2Q	7	RED/BLU
GND		(1)	(1)	BLK
1.6L
ECT		2I	7	BLU/RED
SIGRTN		2C	46	BLU/YEL
(1) Not specified.