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EGR Temperature Sensor: Testing and Inspection

Diagnostic Chart:




Wiring Diagram:






DIAGNOSTIC CHART AND DIAGRAM

1. CHECK INPUT SIGNAL FROM SENSOR
1) Turn ignition "ON".
2) Disconnect main ECU connector.
3) Measure voltage between ECU connector and ground.


Connector & Terminal/Specified value
(B59) No. 4 - ground/4.0 - 4.8 vdc @ 68° F (20° C)
(B59) No. 4 - ground/0.4 - 1.2 vdc @ 212° F (100° C)

Harness:





2. CHECK HARNESS CONTINUITY BETWEEM ECU AND SENSOR
1) Turn ignition "OFF".
2) Disconnect ECU and sensor connectors.
3) Measure resistance between ECU connector and sensor connector.


Connector & Terminal/Specified value
(B59) No. 4 - (E13) No. 2/0 ohms
(B59) No. 11 - (E13) No. 1/0 ohms





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