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