Dodge Nitro. Manual — part 204

If the Anti-Lock Brakes Module fails to receive bus messages from the ECM or PCM for approximately
500 ms.

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

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

Possible Causes

DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
CAN C BUS CIRCUITS OPEN OR SHORTED
ECM OR PCM POWER AND GROUND
ECM OR PCM
ANTI-LOCK BRAKES MODULE

NOTE:

Verify the IOD fuse is installed and battery voltage is between 10 and 16
volts before proceeding.

NOTE:

Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

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) VERIFY THAT THE ECM OR PCM IS ACTIVE ON THE BUS

With the scan tool, select ECU View.

Verify that the ECM or PCM is active on the bus.

Is the ECM or PCM active on the bus?

Yes

Go to 4).

No

Perform the Stored Lost Communication test procedure. Refer to DIAGNOSIS AND TESTING .

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 .

No

Replace the Anti-Lock Brakes Module in accordance with the service information.

Perform ABS VERIFICATION TEST.

U0101-LOST COMMUNICATION WITH TCM

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

ignition related DTCs.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

When Monitored:

With the ignition on

Battery voltage between 10 and 16 volts

IOD fuse installed

Set Condition:

If the Anti-Lock Brakes Module fails to receive bus messages from the TCM for approximately 500 ms.

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

DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
CAN C BUS CIRCUITS OPEN OR SHORTED
TCM POWER AND GROUND
PCM DTCs PRESENT
TCM
ANTI-LOCK BRAKES MODULE

NOTE:

Verify the IOD fuse is installed and battery voltage is between 10 and 16
volts before proceeding.

NOTE:

If present, diagnose and repair DTC U0002-CAN C BUS OFF
PERFORMANCE, DTC or DTC U1502-IMPLAUSIBLE MESSAGE DATA
LENGTH RECEIVED FROM TIPM before diagnosing this DTC.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

No

Perform the Stored Lost Communication test procedure. Refer to DIAGNOSTIC CODE INDEX .
Refer to DIAGNOSIS AND TESTING .

Perform BODY VERIFICATION TEST - VER 1 .

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) VERIFY THAT THE TCM IS ACTIVE ON THE BUS

With the scan tool, select ECU View.

Verify that the TCM is active on the bus.

Is the TCM active on the bus?

Yes

Go to 4).

No

Refer to the DIAGNOSTIC CODE INDEX for a no response test procedure.

Perform BODY VERIFICATION TEST - VER 1 .

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 TCM?

Yes

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