Diagnosis And Testing - In-Car Temperature Sensor: Notes
NOTE:
For complete circuit diagrams, see Wiring Information. Wiring Information includes wiring diagrams, connector pin out and location views, details of wire harness routing and retention, splice and ground locations and proper wire and connector repair procedures.
Using a scan tool, check for Diagnostic Trouble Codes (DTCs) related to the in-car temperature sensor and the A/C heater module. If any DTCs are found, repair as necessary. Refer to DIAGNOSTIC CODE INDEX . If no DTCs are found, perform the two following tests. Replace the in-car temperature sensor if the sensor fails either test.