Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
This DTC must be active for the results of this test to be valid.
1. Perform any Service Bulletins that may apply.
2. Turn the ignition on.
3. With the scan tool, read ABS DTCs and record on the repair order.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read the DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
CHECK IF ACC MODULE DTCS ARE PRESENT
1. With the scan tool, read the ACC DTCs.
  Are there any ACC DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedures. Refer to DTC INDEX .
  No
  - Go To 3
CHECK OTHER MODULES FOR CAN BUS DTCS
1. With the scan tool, read the DTCs.
  Are there any CAN BUS DTCs present?
  
  Yes
  - Using the schematics as a guide, check the Adaptive Cruise Control (ACC) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Adaptive Cruise Control (ACC) Module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL (ACCM), REMOVAL .
  No
  - Using the schematics as a guide, check the Anti-lock Brake System (ABS) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .