Dodge Nitro. Manual - part 719

With the scan tool, erase DTCs. 

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

With the A/C control, turn on the Blower Motor. 

With the scan tool, read DTCs. 

Does the scan tool display active: B10EA-BLOWER MOTOR CONTROL CIRCUIT HIGH?  

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 (C7) BLOWER MOTOR CONTROL CIRCUIT FOR AN OPEN 

Turn the ignition off. 

Disconnect the TIPM C8 harness connector. 

Disconnect the Blower Motor harness connector. 

Measure the resistance of the (C7) Blower Motor Control circuit between the TIPM C8 harness connector 
and the Blower Motor harness connector. 

Does the ohm meter read open circuit?  

Yes  

Repair the (C7) Blower Motor Control circuit for an open.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Go to 3).  

3) CHECK (C7) BLOWER MOTOR CONTROL CIRCUIT FOR SHORT TO VOLTAGE 

Turn the ignition on. 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

With a volt meter measure the voltage on the (C7) Blower Motor Control circuit. 

Does the volt meter read above 10.0 volts?  

Yes  

Repair the (C7) Blower Motor Control circuit for a short to voltage.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Go to 4).  

4) TOTALLY INTEGRATED POWER MODULE 

Turn the ignition on. 

With the scan tool, erase DTCs. 

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

With the A/C control, turn on the Blower Motor. 

With the scan tool, read DTCs. 

Does the scan tool display active: B10EA-BLOWER MOTOR 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 Blower Motor in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT (TIPM) 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

With the ignition on. 

Set Condition: 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

The Totally Integrated Power Module (TIPM) will set this DTC if it detects an overcurrent condition on 
the (C7) Blower Motor Control circuit for more than 500 ms when blower motor operation is requested. 

Diagnostic Test 

1) VERIFY DTC B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT 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 active: B10EC-BLOWER MOTOR CONTROL CIRCUIT 
OVERCURRENT?  

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 PROPER BLOWER MOTOR OPERATION 

Turn the ignition on. 

Turn the Blower Motor on. 

Does the Blower Motor operate normally?  

Yes  

Go to 5).  

Possible Causes 

BLOCKAGE STALLING BLOWER MOTOR
BLOWER MOTOR
TOTALLY INTEGRATED POWER MODULE (TIPM)

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

No  

Go to 3).  

3) CHECK FOR 12 VOLTS TO THE BLOWER MOTOR 

Turn the ignition off. 

Disconnect the Blower Motor harness connector. 

Turn the ignition on. 

Turn the Blower Motor control on. 

Using a volt meter measure the voltage on the (C7) Blower Motor Control circuit in the Blower Motor 
harness connector. 

Does the volt meter read 12 volts?  

Yes  

Go to 4).  

No  

Go to 5).  

4) CHECK FOR A BLOCKAGE STALLING THE BLOWER MOTOR 

Turn the ignition off. 

Remove the Blower Motor from the HVAC housing assembly. 

Look for anything on the Blower Motor and in the HVAC housing that is physically preventing Blower 
Motor operation. 

Is anything physically preventing Blower Motor operation?  

Yes  

Repair as necessary. Also, check Blower Motor for proper operation. Reinstall, or replace the 
Blower Motor as necessary in accordance with the service information.  

No  

Replace the Blower Motor in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

5) CHECK FOR CHAFING IN THE (C7) BLOWER MOTOR CONTROL CIRCUIT

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro