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Home >> Infiniti >> 2001 >> G20 Base, Automatic, RE4F03W >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1126: Thermostat Function >> Procedure

DTC P1126: Thermostat Function: Procedure

Remove ECT sensor. See Figure. Measure resistance between ECT sensor terminals, with sensor at specified temperatures. See ECT SENSOR RESISTANCE  table. If resistance is as specified, test is complete. If resistance is not as specified, replace ECT sensor and retest system.

ECT SENSOR RESISTANCE

Temperature °F (°C) (1) Ohms
68 (20) 2100-2900
122 (50) 680-1000
194 (90) 236-260
(1) Resistance should decrease as temperature increases. See Figure.