B1032–EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH (CCN)For a complete wiring diagram Refer to Section 8W.When Monitored:With the ignition on.Set Condition:If the Evaporator Temperature Sensor input is out of range toward the high voltage threshold.
Possible Causes(C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE(C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN(C121) SENSOR GROUND CIRCUIT OPENEVAPORATOR TEMPERATURE SENSORINSTRUMENT CLUSTER (CCN)
Diagnostic Test1.VERIFY B1032–EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH IS ACTIVETurn 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?YesGo To 2NoCheck 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 DISCONNECTEDTurn 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?YesGo To 3.NoReplace the Evaporator Temperature Sensor in accordance with the service information.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).3.CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPENDisconnect 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?YesRepair the (C21) Evaporator Temperature Sensor Signal circuit for an open.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).NoGo To 5.4.CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO VOLTAGEUsing a volt meter check for voltage on the (C21) Evaporator Temperature Sensor Signal circuit.Does the volt meter read any voltage?YesRepair the (C21) Evaporator Temperature Sensor Signal circuit for a short to voltage.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).NoGo To 5.5.CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPENMeasure 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?YesReplace the Instrument Cluster (CCN) in accordance with the service information.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).NoRepair the (C121) Sensor Ground circuit for an open.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).