Dodge Nitro. Manual - part 694

When Monitored: 

With the ignition on. 

Set Condition: 

If the Floor mode switch is stuck in a pushed position for more than two minutes. This DTC has a 
maturing time of two minutes and a de-maturing time of two seconds. If the DTC's status changes from 
active to stored it will stay in memory for 100 ignition cycles. 

Diagnostic Test 

1) VERIFY THE DTC IS STILL ACTIVE 

Inspect the A/C Heater Control for an object holding the switch in a pushed position. If present, remove 
the object. 

Turn the ignition on. 

With the scan tool, erase HVAC DTCs. 

Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 2 minutes before proceeding. 

With the scan tool, read HVAC DTCs. 

Does the scan tool display this DTC?  

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 .  

B100F-MIX SWITCH REQUEST INPUT CIRCUIT PER 

Possible Causes 

OBJECT HOLDING SWITCH IN A PUSHED POSITION
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

The mix switch input changes when the switch is pushed down. An active DTC indicates that the switch is stuck 
in a pushed position. A stored DTC indicates that the switch was stuck in a pushed position for more than two 
minutes, but has since returned to its normal state. 

When Monitored: 

With the ignition on. 

Set Condition: 

If the mix switch is stuck in a pushed position for more than two minutes. This DTC has a maturing time 
of two minutes and a de-maturing time of two seconds. If the DTC's status changes from active to stored 
it will stay in memory for 100 ignition cycles. 

Diagnostic Test 

1) VERIFY THE DTC IS STILL ACTIVE 

Inspect the A/C Heater Control for an object holding the switch in a pushed position. If present, remove 
the object. 

Turn the ignition on. 

With the scan tool, erase HVAC DTCs. 

Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 2 minutes before proceeding. 

With the scan tool, read HVAC DTCs. 

Does the scan tool display this DTC?  

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 

Possible Causes 

OBJECT HOLDING SWITCH IN A PUSHED POSITION
A/C HEATER CONTROL

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

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 .  

B1012-DEFROST SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

The switch input changes when the switch is pushed down. A stored DTC indicates that the defrost switch was 
stuck in a pushed position for more than 10 minutes, but has since returned to its normal state. An active DTC 
indicates that the defrost switch is stuck in a pushed position. 

When Monitored: 

With the ignition on. 

Set Condition: 

If the defrost switch is detected in a pushed position for more than 10 minutes. 

Diagnostic Test 

1) VERIFY THE DTC IS STILL ACTIVE 

Turn the ignition on. 

With the scan tool, erase HVAC DTCs. 

Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 10 minutes before proceeding. 

With the scan tool, read HVAC DTCs. 

Does the scan tool display this DTC?  

Yes  

Go to 2).  

No  

The condition that caused this symptom is currently not present. Check for an intermittent 

Possible Causes 

OBJECT HOLDING DEFROST SWITCH IN A PUSHED POSITION
SUBSTANCE CAUSING DEFROST SWITCH TO GET STUCK IN A PUSHED POSITION
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 FOR NORMAL DEFROST SWITCH & STATUS INDICATOR FUNCTION 

Set the Blower control to any position except Off. 

Set the Mode control to any position except Auto. 

Press the Defrost switch on and off several times while observing the Defrost status indicator. 

Does the Defrost status indicator turn on and off?  

Yes  

Go to 4).  

No  

Go to 3).  

3) INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE DEFROST SWITCH TO STAY 
OR STICK IN A PUSHED POSITION 

Inspect the A/C Heater Control for anything that would cause the Defrost switch to stay or stick in a 
pushed position. 

Is anything present that would cause the Defrost switch to stay or stick in a pushed position?  

Yes  

Repair as necessary.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Go to 4).  

4) INSPECT THE A/C HEATER CONTROL FOR DAMAGE 

Inspect the A/C Heater Control for damage. 

Is the A/C Heater Control damaged?  

Yes  

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro