2007 Wrangler JK Factory Service Manual Not in the contents tree

U1159-LOST COMMUNICATION WITH AUTOMATIC SWAY BAR SYSTEM (ASBS) MODULE





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on.

    Battery voltage between 10 and 16 volts.

    IOD fuse installed.

    TIPM is configured correctly.

  • Set Condition:

    Bus messages not received from the Antilock Brake Module for approximately 2 to 5 seconds.


Possible Causes
  
CAN C BUS CIRCUITS OPEN OR SHORTED
  
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
  
TIPM NOT CONFIGURED CORRECTLY
  
AUTOMATIC SWAY BAR SYSTEM MODULE POWER AND GROUND
  
AUTOMATIC SWAY BAR SYSTEM MODULE
  
MODULE THAT SET THIS DTC
  



Diagnostic Test

1. VERIFY DTC IS ACTIVE

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.


With the scan tool, read active DTCs.

Is this DTC active?

Yes


No

2. CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS

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

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



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

Yes
  • Diagnose and repair the DTC. Refer to the Index for a complete list of the symptoms.


No

3. VERIFY THAT THE ASBS IS ACTIVE ON THE BUS

Turn the ignition on.
With the scan tool, select Network Diagnostics.
Verify that the ASBS is active on the bus.

Is the ASBS active on the bus?

Yes


No

4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS

With the scan tool, select Network Diagnostics.

Is there more than one module with active DTCs “Logged Against” the ABS?

Yes


No