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Home >> Jeep >> 2009 >> Grand Cherokee Laredo, 3.0 M, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DRIVEABILITY - Diesel - Non-DTC-Based Diagnostics >> Diagnosis and Testing >> Checking The Engine Coolant Temperature Sensor Calibration >> Notes

Checking The Engine Coolant Temperature Sensor Calibration: Notes

Fig 1: Engine Coolant Temperature Sensor Circuit Schematic
GC0119956Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible Causes 
ECT SENSOR - COLD
ECT SENSOR - HOT