Dodge Nitro. Manual - part 783

Fig. 2: Using 12-Volt Test Light Connected To Ground To Probe (F20) Ignition Switch Output 
(Run-Start) Circuit In TIPM C7 Harness Connector 
Courtesy of CHRYSLER LLC 

Turn the ignition off. 

Disconnect the TIPM C7 harness connector. 

Turn the ignition on. 

Using a 12-volt test light connected to ground, probe the (F20) Ignition Switch output (Run-Start) circuit 
in the TIPM C7 harness connector. 

Does the test light illuminate brightly?  

Yes  

Replace the TIPM in accordance with the service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Repair the (F20) Ignition switch output circuit for an open.  

Perform BODY VERIFICATION TEST - VER 1 . 

NOTE:

Check the related fuse (TIPM 46) to the (F20) Ignition Switch Output (Run-
Start) circuit. If blown, use the wiring diagrams as a guide to make 
necessary repairs.

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

B2102-IGNITION RUN/START INPUT CIRCUIT HIGH

Fig. 3: Identifying Ignition Run/Start Input Circuit 
Courtesy of CHRYSLER LLC 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

When Monitored: 

With the ignition switch on. 

Set Condition: 

The WCM/WIN (SKREEM) Module has detected the ignition switch input voltage above a calibrated 
value. 

Diagnostic Test 

1) CHECK FOR ACTIVE DTC 

Turn the ignition on. 

With a scan tool, read, record and erase WCM/WIN (SKREEM) DTC(s). 

Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. 

Using the scan tool, read WCM/WIN (SKREEM) DTC(s). 

Does the scan tool display this DTC as active?  

Yes  

Go to 2).  

No  

The condition that caused this code to set is not present at this time. 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.  

Perform BODY VERIFICATION TEST - VER 1 .  

2) (F20) IGNITION SWITCH OUTPUT (RUN-START) SHORTED TO BATTERY VOLTAGE

Possible Causes 

(F20) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORTED TO BATTERY VOLTAGE
WCM/WIN (SKREEM) MODULE

NOTE:

Check to make sure the battery and charging system are operating 
properly. Battery and charging system problems may cause these DTC's 
to set.

NOTE:

Diagnose any related Powertrain DTC(s) before continuing.

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

Fig. 4: Using 12-Volt Test Light Connected To Ground To Probe (F20) Ignition Switch Output 
(Run-Start) Circuit In WCM/WIN (SKREEM) Harness Connector 
Courtesy of CHRYSLER LLC 

Turn the ignition off. 

Disconnect the WCM/WIN (SKREEM) harness connector. 

Using a 12-volt test light connected to ground, probe the (F20) Ignition Switch Output (Run-Start) circuit 
in the WCM/WIN (SKREEM) harness connector. 

Does the test light illuminate brightly?  

Yes  

Repair the (F20) Ignition Switch Output (Run-Start) circuit for a short to battery voltage.  

Perform SKREEM/SKIM VERIFICATION TEST .  

No  

Replace and program the WCM/WIN (SKREEM) in accordance with the service information.  

Perform SKREEM/SKIM VERIFICATION TEST .  

B210D-BATTERY VOLTAGE LOW 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro