Dodge Nitro. Manual - part 724

 

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Dodge Nitro. Manual - part 724

 

 

With the ignition switch on. 

Set Condition: 

The A/C Heater Control has detected the system voltage is high. 

Diagnostic Test 

1) ACTIVE DTC(S) PRESENT 

Turn the ignition 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 (F943) FUSED RUN-START RELAY OUTPUT CIRCUIT FOR A SHORT TO 
BATTERY VOLTAGE
 

Possible Causes 

(F943) FUSED RUN-START RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

Fig. 59: Using Volt Meter Measure Voltage On (F943) Fused Run-Start Relay Output 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. 

Using a volt meter measure the voltage on the (F943) Fused Run-Start Relay Output circuit in the A/C 
Heater Control C1 harness connector. 

Is there any voltage present?  

Yes  

Repair the (F943) Fused Run-Start Relay Output circuit for a short to voltage.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

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

Perform BODY VERIFICATION TEST - VER 1 .  

B2214-(HVAC) CLIMATE CONTROL INTERNAL 

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

  

With the ignition on. 

Set Condition: 

If the A/C Heater Control has an internal fault. This DTC has a maturing time of 5 seconds and a de-
maturing time of 10 seconds. If the DTC's status changes from active to stored it will stay in memory for 
100 ignition cycles. 

Diagnostic Test 

1) ACTIVE DTC(S) PRESENT 

Turn the ignition on. 

With the scan tool, check for DTCs. 

Does the scan tool display this DTC as active?  

Yes  

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

Perform BODY VERIFICATION TEST - VER 1 .  

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 .  

B222A-VEHICLE LINE MISMATCH 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

With the ignition on. 

Set Condition: 

The A/C Heater Control will receive and monitor the vehicle line message from the PCM and record the 
vehicle line if different from the last vehicle line.

Possible Causes 

A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

Diagnostic Test 

1) ACTIVE DTC(S) PRESENT 

Turn the ignition 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 VEHICLE LINE IN PCM 

With the scan tool compare the vehicle line that is programmed into the PCM to the vehicle line of the 
vehicle. 

Does the vehicle line programmed into the PCM match the vehicle?  

Yes  

Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the 
A/C Heater Control in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Replace and program the Powertrain Control Module in accordance with the service information. 
Ensure the PCM is replaced with the correct vehicle line PCM.  

Perform POWERTRAIN VERIFICATION TEST .  

U0010-CAN INTERIOR BUS 

Possible Causes 

PCM
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

 

 

 

 

 

 

 

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