DTC    22    Engine Coolant Temperature Sensor Circuit Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

When using intelligent tester:

READ VALUE USING INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)

When not using intelligent tester:

CHECK ECM (THW VOLTAGE)

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)