Diagnostic Procedure
EVAP TEMP SENSOR SHORTED (ACTIVE) SYMPTOM CHART
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition off. Disconnect the in-line C202 harness connector. Turn the ignition on. With the DRBIII®, read the active DTCs. Does the DRBIII® display: EVAP TEMP SENSOR OPEN? Yes --> Check the Evap Temp Sensor Signal circuit between the in-line C202 harness connector (HVAC side) and the Evap Temp Sensor for a short to ground. Repair as necessary. If Ok, replace the Evaporator Temperature Sensor. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2 |
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| 2 | Turn the ignition off. Disconnect the ATC C1 harness connector. Disconnect the in-line C202 harness connector. Measure the resistance between ground and the Evaporator Temperature Sensor Signal circuit (IP side). Is the resistance above 100k ohms? Yes --> Go To 3 No --> Repair the Evaporator Temperature Sensor Signal circuit between the ATC C1 harness connector and the in-line C202 harness connector (IP side) for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . |
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| 3 | Turn the ignition off. Disconnect the ATC C1 harness connector. Disconnect the in-line C202 harness connector. Measure the resistance between the Evaporator Temperature Sensor Signal circuit and the Sensor Ground circuit (IP side). Is the resistance above 100k ohms? Yes --> Replace the Automatic Temperature Control (ATC) in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Repair the Evaporator Temperature Sensor Signal circuit between the ATC C1 harness connector and the in-line C202 harness connector (IP side) for a short to Sensor Ground. Perform BODY VERIFICATION TEST - VER 1 . |
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