Dodge Nitro. Manual - part 782

each relay until the terminals are fully seated. 

3. Close the cover (1) of the diesel accessory fuse/relay block.  

4. Reconnect the negative battery cable. 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

2007 ENGINE

Ignition Control - Electrical Diagnostics - Nitro 

DIAGNOSTIC CODE INDEX 

DIAGNOSTIC CODE INDEX 

IGNITION CONTROL- ELECTRICAL DIAGNOSTICS 

DIAGNOSIS AND TESTING 

B2101-IGNITION RUN/START INPUT CIRCUIT LOW 

DTC

Description

B2101

IGNITION RUN/START INPUT CIRCUIT LOW

B2102

IGNITION RUN/START INPUT CIRCUIT HIGH

B210D

BATTERY VOLTAGE LOW

B210E

BATTERY VOLTAGE HIGH

B219A

IGNITION UNLOCK RUN/START CONTROL CIRCUIT OVERCURRENT

B2206

CURRENT VIN MISSING/MISMATCH

B222C

VEHICLE CONFIGURATION NOT PROGRAMMED

U0100

LOST COMMUNICATION WITH ECM/PCM

U0101

LOST COMMUNICATION WITH TCM

U0114

LOST COMMUNICATION WITH FINAL DRIVE CONTROL MODULE

U0121

LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE

U0151

LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER

U0154

LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE

U0155

LOST COMMUNICATION WITH CLUSTER/CCN

U0164

LOST COMMUNICATION WITH HVAC CONTROL MODULE

U0168

LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE 
(SKREEM/WCM)

U0184

LOST COMMUNICATION WITH RADIO

U0186

LOST COMMUNICATION WITH AUDIO AMPLIFIER

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

Fig. 1: Identifying Ignition Run/Start Input Circuit 
Courtesy of CHRYSLER LLC 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro

  

With the ignition switch on. 

Set Condition: 

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

Diagnostic Test 

1) CHECK FOR ACTIVE DTC 

Turn the ignition on. 

With a scan tool, read, record and erase TIPM DTCs. 

Turn the ignition off for 30 seconds, then back on. 

Using the scan tool, read TIPM DTCs. 

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) CIRCUIT OPEN 

Possible Causes 

(F20) IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
(A106) FUSED B+ SHORTED TO GROUND
IGNITION SWITCH
TIPM

 

2007 Dodge Nitro R/T 

2007 ENGINE Ignition Control - Electrical Diagnostics - Nitro