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 ECM connector.
3) Measure voltage between ECM 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 BETWEEN ECM AND SENSOR
1) Turn ignition "OFF".
2) Disconnect ECM and sensor connectors.
3) Measure resistance between ECM connector and sensor connector.


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