Chrysler Concorde 2004 Service Manual page 305

EVAPORATOR TEMPERATURE SENSOR FAILURE —
TEST
3 Disconnect the Evaporator Temperature Sensor harness connector.
Turn the ignition on.
Connect a jumper wire between the Evaporator Temperature Sensor Signal circuit
and the Sensor Ground circuit.
With the DRBIII in Sensors, read the Evaporator Temperature Sensor voltage.
Does the DRBIII display EVAP TEMP: 4.9 VOLTS or greater?
Yes → Go To 4
→ Replace the Evaporator Temperature Sensor.
No
4 Turn the ignition off.
Disconnect the Evaporator Temperature Sensor harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance of the Evaporator Temp Sensor Signal circuit between the
BCM C2 connector and the Evaporator Temperature Sensor connector.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the Evaporator Temperature Sensor Signal circuit for an
No
5 Turn the ignition off.
Disconnect the Evaporator Temperature Sensor harness connector.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance of the Sensor Ground circuit between the BCM C1 connector
and the Evaporator Temp Sensor connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the Sensor Ground circuit for an open.
No
6 If there are no possible causes remaining, view repair.
Repair
7 Disconnect the Evaporator Temperature Sensor harness connector.
Turn the ignition on.
With the DRBIII in Sensors, read the Evaporator Temperature Sensor voltage.
Does the DRBIII display EVAP TEMP: 4.9 VOLTS or greater?
Yes → Go To 8
→ Go To 10
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
open.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
289
HEATING & A/C
Continued
APPLICABILITY
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