Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C100-1 | Ground |
Is any voltage present?
Yes | REPAIR the circuit. | |
|---|---|---|
No | GO to H3 | |
H3 COMPARE THE EVAPORATOR TEMPERATURE SENSOR TO THE PCM (POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE (AAT) PID (PARAMETER IDENTIFICATION)
Ignition OFF. Allow the vehicle exterior and interior to stabilize to ambient temperature. Disconnect Evaporator Temperature Sensor C296. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C296-1 (component side) | C296-2 (component side) |
Compare the resistance values to the table below:
Ambient Temperature °F (°C) | Resistance ohms |
-39.9°F (-40°C) | 98,625 - 103,275 ohms |
-4.0°F (-20°C) | 28,640 - 29,600 ohms |
32.0°F (°C) | 9695 - 9895 ohms |
68.0°F (20°C) | 3675 - 3810 ohms |
77.0°F (25°C) | 2950 - 3050 ohms |
86.0°F (30°C) | 2370 - 2565 ohms |
103.9°F (40°C) | 1565 - 1635 ohms |
Ignition ON. Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs). Monitor the AAT PID.
Is the resistance within the specified values for the temperatures?
Yes | GO to H4 | |
|---|---|---|
No | INSTALL a new evaporator temperature sensor. REFER to: Evaporator Temperature Sensor (412-00 Climate Control System - General Information, Removal and Installation). | |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.