Diagnostic Test

READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10 seconds.
5. Turn the ignition on.
6. Wait a minimum of 10 minutes for the DTC to mature.
7. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
PERFORM APPLICABLE SOFTWARE UPDATE(S) - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. Check for any applicable Service Bulletins or software updates related to this DTC. Update the ACC module software as necessary in accordance with the Service Information.
2. With the scan tool, erase all DTCs.
3. Turn the ignition off for a minimum of 10 seconds.
4. Turn the ignition on.
5. Wait a minimum of 10 minutes for the DTC to mature.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Repeat erasing the DTC and cycling the ignition at least 3 times. If the DTC continues to reset, replace and program the Adaptive Cruise Control (ACC) module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL (ACC), REMOVAL and MODULE, ADAPTIVE CRUISE CONTROL (ACC), INSTALLATION .
  - Perform the ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST .
  No
  - Performing the software update corrected the condition.
  - Perform the ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST .