Dodge Nitro. Manual - part 696

With the ignition on. 

Set Condition: 

If the Evaporator Temperature Sensor input is out of range toward the low voltage threshold. 

Diagnostic Test 

1) ACTIVE DTC(S) PRESENT 

Turn the ignition on. 

Using the A/C Heater Control, turn the heater on. 

With the scan tool, check for DTCs. 

Does the scan tool display this DTC as active?  

Yes  

Go to 2).  

No  

The condition that caused this symptom is currently not present. 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 BODY VERIFICATION TEST - VER 1 .  

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 HVAC DTCs. 

Turn the ignition off, wait 10 seconds, and turn the ignition on.

Possible Causes 

(C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
EVAPORATOR TEMPERATURE SENSOR
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

With the scan tool, read HVAC DTCs.

Does the scan tool display this DTC as active?  

Yes  

Go to 3).  

No  

Replace the Evaporator Temperature Sensor in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

3) CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A 
SHORT TO GROUND 

Fig. 2: Measuring Resistance Between Ground And (C21) Evaporator Temperature Sensor Signal 
Circuit In A/C Heater Control C1 Harness Connector 
Courtesy of CHRYSLER LLC 

Turn the ignition off. 

Disconnect the A/C Heater Control C1 harness connector. 

Measure the resistance between ground and the (C21) Evaporator Temperature Sensor Signal circuit in 
the A/C Heater Control C1 harness connector. 

Does the ohm meter read open circuit?  

Yes  

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

Replace the A/C Heater Control in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to ground.  

Perform BODY VERIFICATION TEST - VER 1 .  

B1032-EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

Fig. 3: Evaporator Fin Temperature Sensor Circuit Schematic 
Courtesy of CHRYSLER LLC 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro