Dodge Nitro. Manual - part 859

At all times. 

Set Condition: 

The TIPM detects a high circuit on the Secondary Door Lock Relay Control circuit even though it is not 
attempting to lock the doors for more than 5 seconds. 

This test is only for Right Hand Drive (RHD) vehicles.  

Diagnostic Test 

1) CHECK TROUBLE CODE 

Turn the ignition on. 

Record all trouble codes. 

With the scan tool, erase DTCs. 

Turn ignition off and remove the key. 

Lock all doors and wait 2 minutes. 

Turn the ignition on. 

With the scan tool, read DTCs. 

Does the scan tool display B1870-ALL DOOR SECONDARY LOCK CONTROL CIRCUIT 
HIGH?  

Yes  

Go to 2).  

No  

Problem is intermittent and not present at this time. Using the wiring diagram/schematic as a guide, 
inspect the wiring and connectors and repair as necessary. Ensure the relay is completely plugged 
in.  

Perform BODY VERIFICATION TEST - VER 1 .  

2) CHECK FOR RELAY SHORTED

Possible Causes 

RELAY SHORTED
(P390) SECONDARY DOOR LOCK RELAY CONTROL CIRCUIT SHORT TO VOLTAGE
TOTALLY INTEGRATED POWER MODULE (TIPM)

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

  

Fig. 23: Secondary Door Lock Relay 
Courtesy of CHRYSLER LLC 

Turn the ignition off. 

Remove the Secondary Door Lock Relay from the I.P. End Bracket (behind the right kick panel). 

Install a substitute relay in place of the Secondary Door Lock Relay. 

Turn the ignition on. 

With the scan tool, erase DTCs. 

Turn ignition off and remove the key. 

Lock all doors and wait 2 minutes. 

Turn the ignition on. 

With the scan tool, read DTCs. 

Does the scan tool display B1870-ALL DOOR SECONDARY LOCK CONTROL CIRCUIT 
HIGH?  

Yes  

Go to 3).  

No  

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

  

Replace the original relay.  

Perform BODY VERIFICATION TEST - VER 1 .  

3) CHECK THE (P390) SECONDARY DOOR LOCK RELAY CONTROL CIRCUIT FOR A 
SHORT TO VOLTAGE 

Fig. 24: Measuring Voltage Between Ground And (P390) Secondary Door Lock Relay Control 
Circuit In Relay Connector 
Courtesy of CHRYSLER LLC 

Turn the ignition off. 

Remove the Secondary Door Lock Relay. 

Disconnect the TIPM C7 connector. 

Turn the ignition on. 

Measure the voltage between ground and the (P390) Secondary Door Lock Relay Control circuit in the 
relay connector. 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

  

Is there any voltage present?  

Yes  

Repair the (P390) Secondary Door Lock Relay Control circuit for a short to voltage.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Replace the Totally Integrated Power Module in accordance with service information.  

Perform BODY VERIFICATION TEST - VER 1 .  

B1934-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK - TIPM 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro