Engine - Coolant Temperature Sensor/Switch: Testing and Inspection

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

With Consult
(1) Turn ignition switch "ON".
(2) Select "DATA MONITOR" mode with CONSULT
(3) Wait at least 5 seconds.

OR

With GST
(1) Turn ignition switch "ON" and wait at least 5 seconds.
(2) Select "MODE 3" with GST

OR

Without Scan Tools
(1) Turn ignition switch "ON" and wait at least 5 seconds.
(2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(3) Perform "Diagnostic Test Mode II" (Self-diagnostic results) with ECM.

CIRCUIT DIAGRAM





DIAGNOSTIC PROCEDURES

Procedure For DTC P0115 (MIL Number 0103):

Procedure For DTC P0125 (MIL Number 0908):

COMPONENT INSPECTION










Engine coolant temperature sensor
Check resistance as shown in the figure.
If NG, replace engine coolant temperature sensor.