Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Adaptive Cruise Control (ACC) DTCs and record on the repair order. Record the DTC information on the repair order.
2. With the scan tool, erase ACC Module DTCs.
3. Turn the ignition off for 10 seconds, then start the engine.
4. With the scan tool, read ACC DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK FOR ACTIVATION OF ROLLER MODE IN THE ABS MODULE
1. With the scan tool, check if Roller Mode is activated in the ABS Module.
  Is Roller Mode activated in the ABS Module?
  
  Yes
  - With the scan tool, deactivate Roller Mode in the ABS Module and retest.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  No
  - Go To 3
CHECK THE ABS MODULE FOR RELATED DTCS
1. With the scan tool, read Anti Lock Brake (ABS) Module DTCs and record on the repair order. Record the DTC data on the repair order.
  Are there any ABS DTCs set?
  
  Yes
  - Repair the ABS DTC(s). Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 4
CHECK RELATED WIRING AND HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect harness connectors between the ACC Module and the ABS Module.
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. Reconnect all harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all 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.
10. Using the recorded information along with the When Monitored and Set Conditions above, operate the vehicle within the conditions that set the DTC.
11. With the scan tool, read ACC DTCs.
  Did the DTC return?
  
  Yes
  - Replace the ACC Module in accordance with the Service Information.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  No
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL VERIFICATION TEST .
  - Test complete.