EGR Temperature Sensor: Testing and Inspection

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Procedure for malfunction A
WITH CONSULT
1) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.




2) Confirm that the engine coolant temperature is lower than 50°C (122°F). (If necessary, wait until the engine coolant temperature is the same as atmosphere temperature.)
3) Start engine and run it for at least 8 seconds at idle speed. [With the engine coolant temperature lower than 50°C (122°F)].

OR

WITH GST
1) Turn ignition switch "ON" and select "MODE 1" with GST.




2) Confirm that the engine coolant temperature is lower than 50°C (122°F). (If necessary, wait until the engine coolant temperature is the same as atmosphere temperature.)
3) Start engine and run it for at least 8 seconds at idle speed. [With the engine coolant temperature lower than 50°C (122°F)].
4) Select "MODE 3" with GST.

OR

WITH NO TOOLS
1) Turn ignition switch "ON" and confirm that voltage between ECM terminal (51) and ground is more than 2.35V. (If necessary, wait until the engine coolant temperature is the same as atmosphere temperature.)




2) Start engine and run it for at least 8 seconds at idle speed. (With the voltage between ECM terminal (51) and ground should stay at more than 2.35V)
3) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
4) Perform "Diagnostic Test Mode II" (Self-diagnostic results) with E0M.

Procedure for malfunction B
WITH CONSULT
1) Start engine and warm it up sufficiently.
2) Turn ignition switch "OFF", wait at least 3 seconds and then start engine again.
3) Select "DATA MONITOR" mode with CONSULT.
4) Run the engine for at least 8 seconds at idle speed.

OR

WITH GST
1) Start engine and warm it up sufficiently.
2) Turn ignition switch "OFF", wait at least 3 seconds and then start engine again.
3) Run the engine for at least 8 seconds at idle speed.
4) Select "MODE 3" with GST.

OR

WITH NO TOOLS
1) Start engine and warm it up sufficiently.
2) Turn ignition switch "OFF", wait at least 3 seconds and then start engine again.
3) Run the engine for at least 8 seconds at idle speed.
4) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
5) Perform "Diagnostic Test Mode II" (Self-diagnostic results) with ECM.




WIRING DIAGRAM




DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION



Check resistance change and resistance value.




If NG, replace EGR temperature sensor.