Dodge Nitro. Manual - part 721

 

  Index      Dodge     Dodge Nitro - service repair manual 2007 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  719  720  721  722   ..

 

 

Dodge Nitro. Manual - part 721

 

 

With the scan tool, read DTCs. 

Does the scan tool display active: B10B9-CABIN HEATER 2 CONTROL CIRCUIT HIGH?  

Yes  

Replace the Totally Integrated Power Module (TIPM in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Replace the Cabin Heater Relay 2 in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

B1610-AMBIENT LIGHT SENSOR INPUT CIRCUIT LOW 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

With the ignition on. 

Set Condition: 

If the Ambient Light Sensor input is out of range toward the low voltage threshold. 

Diagnostic Test 

1) VERIFY THE DTC IS ACTIVE 

Turn the ignition switch on. 

With a scan tool, read and record DTCs. 

With the scan tool, clear DTCs. 

Turn the ignition switch off, and then on. 

Using the scan tool, read DTCs. 

Does the scan tool display this DTC as active?

Possible Causes 

(L24) AUTO HEADLAMPS SIGNAL CIRCUIT SHORTED TO GROUND
SUNLOAD SENSOR
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

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 ACTIVE DTC WITH SUNLOAD SENSOR HARNESS CONNECTOR 
DISCONNECTED
 

Turn the ignition off. 

Disconnect the Sunload 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. 

With the scan tool, read HVAC DTCs. 

Does the scan tool display this DTC as active?  

Yes  

Go to 3).  

No  

Replace the Sunload Sensor in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

3) CHECK (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO GROUND 

Turn the ignition off. 

Disconnect the A/C Heater Control C1 harness connector. 

Measure the resistance of the (L24) Auto Headlamps Signal circuit between ground and the A/C Heater 
Control C1 harness connector. 

Does the ohm meter read open circuit?

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

Yes  

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

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Repair the (L24) Auto Headlamps Signal circuit for a short to ground.  

Perform BODY VERIFICATION TEST - VER 1 .  

B1610-AMBIENT LIGHT SENSOR INPUT CIRCUIT PERFORMANCE 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

With the ignition on. 

Set Condition: 

If the Ambient Light Sensor input is out of range. 

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 

Possible Causes 

(L24) AUTO HEADLAMPS SIGNAL CIRCUIT OPEN
(L24) AUTO HEADLAMPS SIGNAL CIRCUIT SHORTED TO GROUND
(C121) SENSOR GROUND OPEN
SUNLOAD SENSOR
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

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 (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR AN OPEN 

Turn the ignition off. 

Disconnect the A/C Heater Control C1 harness connector. 

Disconnect the Sunload Sensor harness connector. 

Measure the resistance of the (L24) Auto Headlamps Signal circuit between the Sunload Sensor harness 
connector and the A/C Heater Control C1 harness connector. 

Does the ohm meter read open circuit?  

Yes  

Repair the (L24) Auto Headlamps Signal circuit for an open.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Go to 3).  

3) CHECK (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO GROUND 

Measure the resistance between ground and the (L24) Auto Headlamps Signal circuit in the A/C Heater 
Control C1 harness connector. 

Does the ohm meter read open circuit?  

Yes  

Go to 4).  

No  

Repair the (L24) Auto Headlamps Signal circuit for a short to ground.  

Perform BODY VERIFICATION TEST - VER 1 .  

4) CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN 

Measure the resistance of the (C121) Sensor Ground circuit between the Sunload Sensor harness 
connector and the A/C Heater Control C1 harness connector.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

 

 

 

 

 

 

 

Content   ..  719  720  721  722   ..