Dodge Nitro. Manual - part 622

Diagnostic Test 

1) INTERMITTENT CONDITION 

Turn the ignition on. 

With the scan tool, clear all DTC's. 

Turn the Left Turn Signal on. 

With the scan tool, read DTC's. 

Does the scan tool display active: B163B-FRONT LEFT TURN LAMP CONTROL CIRCUIT 
LOW?  

Yes  

Go to 2).  

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 .  

2) FRONT LEFT TURN SIGNAL BULB 

Turn the ignition off. 

Disconnect the Front Left Turn Signal Bulb. 

Turn the ignition on. 

With the scan tool, read DTC's. 

Does the DTC reset?  

Yes  

Go to 3).  

No  

FRONT LEFT TURN SIGNAL BULB
TOTALLY INTEGRATED POWER MODULE

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Lamps/Lighting - Exterior - Electrical/Diagnostics - Nitro

  

Replace the Front Left Turn Signal Bulb in accordance with the Service Information.  

Perform BODY VERIFICATION TEST - VER 1 .  

3) (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT SHORT TO GROUND 

Turn the ignition off. 

Disconnect the TIPM C3 harness connector. 

Disconnect the Front Left Turn Signal Lamp harness connector. 

Measure the resistance between ground and the (L61) Front Left Turn Signal Control circuit. 

Is the resistance above 10k ohms?  

Yes  

Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Repair the (L61) Front Left Turn Signal Control circuit for a short to ground.  

Perform BODY VERIFICATION TEST - VER 1 .  

B163C-FRONT LEFT TURN CONTROL CIRCUIT HIGH 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

Continuously. 

Set Condition: 

When the Totally Integrated Power Module (TIPM) detects a HIGH condition. 

Possible Causes 

CHECK (Z904) GROUND CIRCUIT
(Z904) GROUND CIRCUIT OPEN
CHECK (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT
(L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT OPEN
(L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT SHORTED TO VOLTAGE
FRONT LEFT TURN LAMP BULB
TOTALLY INTEGRATED POWER MODULE

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Lamps/Lighting - Exterior - Electrical/Diagnostics - Nitro

  

Diagnostic Test 

1) TEST FOR INTERMITTENT CONDITION 

Turn the ignition on. 

With the scan tool, clear all DTC's. 

Turn the Left Turn Signal on. 

With the scan tool, read DTC's. 

Does the scan tool display active: B163C-FRONT LEFT TURN LAMP CONTROL CIRCUIT 
HIGH?  

Yes  

Go to 2).  

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 .  

2) CHECK (Z904) GROUND CIRCUITS 

Turn the ignition off. 

Disconnect the Front Left Turn Signal Lamp assembly harness connector. 

With a 12-volt test light connected to 12-volts, probe each (Z904) Ground circuit. 

Does the test light illuminate brightly on each ground circuit?  

Yes  

Go to 4).  

No  

Go to 3).  

3) (Z904) GROUND CIRCUIT OPEN 

Measure the resistance of the appropriate (Z904) Ground circuit(s) at the Front Left Turn Signal Lamp 

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Lamps/Lighting - Exterior - Electrical/Diagnostics - Nitro

  

assembly harness connector. 

Is the resistance below 10.0 ohms?  

Yes  

Replace the Inoperative bulb in accordance with the Service Information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Repair the appropriate (Z904) Ground circuit(s) for an open.  

Perform BODY VERIFICATION TEST - VER 1 .  

4) CHECK (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT 

Turn the ignition on. 

With the Left Turn Signal still on and a 12-volt test light connected to ground, check the (L61) Front Left 
Turn Signal Control circuit. 

Does the test light blink brightly from on to off with the turn signal indicator?  

Yes  

Replace the Inoperative bulb in accordance with the Service Information.  

Perform BODY VERIFICATION TEST - VER 1 .  

No  

Go to 5).  

5) (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT OPEN 

Turn the ignition off. 

Disconnect the TIPM C3 harness connector. 

Measure the resistance of the (L61) Front Left Turn Signal Control circuit between the Front Left Turn 
Signal Lamp assembly harness connector and the TIPM C3 harness connector. 

Is the resistance below 10.0 ohms?  

Yes  

Go to 6).  

 

2007 Dodge Nitro R/T 

2007 ACCESSORIES AND EQUIPMENT Lamps/Lighting - Exterior - Electrical/Diagnostics - Nitro