Dodge Nitro. Manual - part 218

When Monitored: 

Continuously, with ignition on. 

Set Condition: 

If the Anti-Lock Brakes Module detects bus messages from the Engine Control Module (ECM) or 
Powertrain Control Module (PCM) are of improper data length. 

Diagnostic Test 

1) VERIFY DTC IS ACTIVE 

Turn the ignition on. 

With the scan tool, read and record ABS DTCs. 

With the scan tool, read and record Environmental Data (EV Data). 

With the scan tool, erase ABS DTCs. 

Cycle the ignition switch. 

With the scan tool, read ABS DTCs. 

Does this DTC reset?  

Yes  

Go to 2).  

No  

The condition that caused the symptom is currently not present. Inspect the related wiring for a 
possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.  

Refer to the ABS INTERMITTENT CONDITION.  

2) CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs

Possible Causes 

WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
CAN C BUS CIRCUITS OPEN OR SHORTED
ECM OR PCM DTCs PRESENT
ECM OR PCM
ANTI-LOCK BRAKES MODULE

 

2007 Dodge Nitro R/T 

2007 BRAKES ABS - Electrical Diagnostics - Nitro

  

With the scan tool, read all active DTCs from all CAN C Bus modules.

Does the scan tool display any active DTCs related to the conditions listed above?  

Yes  

Diagnose and repair the DTC(s). Refer to the DIAGNOSTIC CODE INDEX .  

No  

Go to 3).  

3) CHECK IF ECM OR PCM DTCs ARE PRESENT 

With the scan tool, read ECM or PCM DTCs. 

Are any DTCs present?  

Yes  

Diagnose and repair the DTC(s). Refer to the appropriate Engine ELECTRICAL DIAGNOSTICS 
article .  

Perform ABS VERIFICATION TEST.  

No  

Go to 4).  

4) CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCs 

With the scan tool, select Network View and select Advanced. 

Is there more than one module with active DTCs "Logged Against" the ECM or PCM?  

Yes  

Replace/update the ECM or PCM in accordance with the service information.  

Perform POWERTRAIN VERIFICATION TEST . .  

Perform ABS VERIFICATION TEST.  

No  

Using the schematics as a guide, check the Anti-Lock Brakes Module pins, terminals, and 
connectors for corrosion, damage, and terminal push out. Pay particular attention to all 

NOTE:

Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or 
ignition related DTCs.

 

2007 Dodge Nitro R/T 

2007 BRAKES ABS - Electrical Diagnostics - Nitro

  

Communication circuits. If no problems are found, replace the Anti-Lock Brakes Module in 
accordance with the Service Information.  

Perform ABS VERIFICATION TEST.  

U1502-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM TCM 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

Continuously, with ignition on. 

Set Condition: 

If the Anti-Lock Brakes Module detects bus messages from the Transmission Control Module (TCM) are 
of improper data length. 

Diagnostic Test 

1) VERIFY DTC IS ACTIVE 

Turn the ignition on. 

With the scan tool, read and record ABS DTCs. 

With the scan tool, read and record Environmental Data (EV Data). 

With the scan tool, erase ABS DTCs. 

Cycle the ignition switch. 

With the scan tool, read ABS DTCs. 

Does this DTC reset?  

Yes  

Go to 2).  

Possible Causes 

WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
CAN C BUS CIRCUITS OPEN OR SHORTED
TCM DTCs PRESENT
TCM
ANTI-LOCK BRAKES MODULE

 

2007 Dodge Nitro R/T 

2007 BRAKES ABS - Electrical Diagnostics - Nitro

  

No  

The condition that caused the symptom is currently not present. Inspect the related wiring for a 
possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.  

Refer to the ABS INTERMITTENT CONDITION.  

2) CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs 

With the scan tool, read all active DTCs from all CAN C Bus modules. 

Does the scan tool display any active DTCs related to the conditions listed above?  

Yes  

Diagnose and repair the DTC(s). Refer to the DIAGNOSTIC CODE INDEX .  

No  

Go to 3).  

3) CHECK IF TCM DTCs ARE PRESENT 

With the scan tool, read TCM DTCs. 

Are any TCM DTCs present?  

Yes  

Diagnose and repair the DTC(s).  

Perform 42RLE TRANSMISSION VERIFICATION TEST .  

No  

Using the schematics as a guide, check the Anti-Lock Brakes Module pins, terminals, and 
connectors for corrosion, damage, and terminal push out. Pay particular attention to all 
Communication circuits. If no problems are found, replace the Anti-Lock Brakes Module in 
accordance with the Service Information.  

Perform ABS VERIFICATION TEST.  

U1503-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM FCM 

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. 

When Monitored: 

NOTE:

Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or 
ignition related DTCs.

 

2007 Dodge Nitro R/T 

2007 BRAKES ABS - Electrical Diagnostics - Nitro