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Engine Coolant Temperature (ECT) Sensor

Fig 1: Engine Coolant Temperature (ECT) Sensor Connector End View
GM1538760Courtesy of GENERAL MOTORS CORP.
Engine Coolant Temperature (ECT) Sensor

Pin Wire Circuit Function
A 0.5 TN 2761 Low Reference (LNF)
1 0.5 TN 2761 Low Reference (LE5)
B 0.5 YE 410 Engine Cooling Temperature Sensor Signal (LNF)
2 0.5 YE 410 Engine Cooling Temperature Sensor Signal (LE5)
Connector Part Information 
  • OEM: 15449028 (LNF) 15336024 (LE5)
  • Service: 88987993 (LNF) 88987978 (LE5)
  • Description: 2-Way F GT 150 Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: 15326267/19 (LNF) 12191819/8 (LE5)
  • Core/Insulation Crimp: E/4 (LNF) E/A (LE5)
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)