DIAGNOSTIC PROCEDURE
SYMPTOM: In-vehicle sensor circuit is open or shorted.
1.CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR HARNESS CONNECTOR AND BODY GROUND
Disconnect in-vehicle sensor connector M34.
Press ignition switch ON.
Check voltage between in-vehicle sensor harness connector M34 terminal 1 and ground.
Is the Inspection result normal?
YES >> GO TO 2
NO >> GO TO 4 2.CHECK IN-VEHICLE SENSOR GROUND CIRCUIT BETWEEN IN-VEHICLE SENSOR AND FRONT AIR
CONTROL
Press ignition switch OFF.
Disconnect front air control connector M37.
Check continuity between front air control harness connector M37 (A) terminal 26 and in-vehicle sensor harness connector
M34 (B) terminal 2.
If OK, check harness for short.
Is the Inspection result normal?
YES >> GO TO 3
NO >> Repair harness or connector. 3.CHECK IN-VEHICLE SENSOR
Check in-vehicle sensor. Refer to See: Component Inspection.
Is the Inspection result normal?
YES >> 1. Replace front air control. Refer to See: Control Module HVAC\Service and Repair.