Symptom:
EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORTED (AC-
TIVE)
When Monitored and Set Condition:
EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORTED (ACTIVE)
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module sees voltage below
0.06 volts on the Evaporator Temperature Sensor Signal circuit.
POSSIBLE CAUSES
EVAPORATOR TEMPERATURE SENSOR
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
CIRCUIT
A/C - HEATER CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the Evaporator Temperature Sensor harness connector.
Turn the ignition on.
With the DRBIIIt in Sensor Display, read the Evaporator Temperature Sensor
voltage.
Does the DRBIIIt display: 4.9 volts or greater?
All
Yes → Replace the Evaporator Temperature Sensor in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Disconnect the Evaporator Temperature Sensor harness connector.
Measure the resistance between ground and the Evaporator Temperature Sensor
Signal circuit.
Is the resistance above 10K ohms?
All
Yes → Go To 3
No → Repair the Evaporator Temperature Sensor Signal circuit for a
short to ground.
Perform BODY VERIFICATION TEST - VER 1.
392
HEATING & A/C
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