Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
This DTC must be active for the results of this test to be valid.
1. Park the vehicle on level ground.
2. Perform any Service Bulletins that may apply.
3. Turn the ignition on.
4. With the scan tool, read ABS DTCs and record on the repair order.
5. With the scan tool, read and record Freeze Frame information.
6. With the scan tool, erase DTCs.
7. Start the engine.
8. Turn the steering wheel from stop to stop.
9. With the scan tool, read ABS DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
CHECK FOR IMPROPER TIRE PRESSURE OR MISMATCHED TIRES AND WHEELS
1. Turn the ignition off.
2. Check and adjust the tire pressures.
3. Inspect for mismatched tires and wheels on vehicle.
  Are tires improperly inflated and/or are there mismatched tires and wheels on the vehicle?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 3
CHECK FOR WHEEL SPEED SENSOR (WSS) DTCS
1. Turn the ignition on.
2. Refer to the recorded DTCs.
  Are there any WSS DTCs active or stored?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DTC TROUBLESHOOTING .
  No
  - Go To 4
CHECK FOR ELECTRIC POWER STEERING (EPS) DTCS
1. Refer to the recorded DTCs.
  Are there any EPS DTCs active?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 5
PERFORM THE RESET ANGLE OFFSET ROUTINE
1. With the scan tool, under "Miscellaneous Functions" select the "Functions to be used only with FCA technical supervision".
2. With the scan tool, perform the "Reset Angle Offset" routine in the ABS Module.
3. Perform and the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  Was the routine successful?
  
  Yes
  - Test Complete.
  No
  - Perform the "Reset Angle Offset" routine again, if still unsuccessful.
  - Go To 6
CHECK RELATED HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect the ABS Module harness connector.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
6. Connect the ABS Module harness connector. Be certain that the harness connector is fully seated and the connector lock is fully engaged.
7. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Connect the related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
  WARNING:
  To avoid possible serious or fatal injury, check brake capability is available before road testing.
10. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
11. With the scan tool, read ABS Module DTCs.
  Did the DTC return?
  
  Yes
  
  NOTE:
  For this failure it is necessary to replace both the Anti-lock Brake System (ABS) Module and the Hydraulic Control Unit (HCU) as a complete unit.
  - Replace the Integrated Control Unit (ICU) in accordance with the Service Information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL AND INSTALLATION .
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .