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Check ECTS Resistance

IG "OFF" and disconnect ECTS connector.

Measure resistance between signal and ground terminals of ECTS connector as the temperature rises.

SPECIFICATION :

ECTS RESISTANCE SPECIFICATION

Temp. (°C/°F)	Resistance (kΩ)	Temp. (°C/°F)	Resistance (kΩ)
-40 (-40)	48.14	40 (104)	1.15
-20 (-4)	14.13 ~ 16.83	60 (140)	0.59
0 (32)	5.79	80 (176)	0.32
20 (68)	2.31 ~ 2.59

Are the measured resistance within specification?
YES:
- Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure..
NO:
- Substitute with a known - good ECTS and check for proper operation. If the problem is corrected, replace ECTS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.