B1032–EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH (CCN)
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
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(C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN
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(C121) SENSOR GROUND CIRCUIT OPEN
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EVAPORATOR TEMPERATURE SENSOR
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INSTRUMENT CLUSTER (CCN)
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Diagnostic Test
1.
VERIFY B1032–EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH IS ACTIVE
Turn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?
Yes
No
-
Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related
connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
-
Perform the BODY VERIFICATION TEST – VER 1.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2.
CHECK FOR DTC WITH THE EVAPORATOR TEMPERATURE SENSOR HARNESS CONNECTOR DISCONNECTED
Turn the ignition off.
Disconnect the Evaporator Temperature Sensor harness connector.
Turn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?
Yes
No
3.
CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN
Disconnect the Instrument Cluster (CCN) C3 harness connector.
Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between the Instrument Cluster (CCN) C3 harness connector and the Evaporator Temperature Sensor harness connector.
Does the ohm meter read open circuit?
Yes
No
4.
CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO VOLTAGE
Using a volt meter check for voltage on the (C21) Evaporator Temperature Sensor Signal circuit.
Does the volt meter read any voltage?
Yes
No
5.
CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN
Measure the resistance of the (C121) Sensor Ground circuit between the Instrument Cluster (CCN) C3 harness connector and the Evaporator Temperature Sensor harness connector.
Does the ohm meter read open circuit?
Yes
No