4210-Valve Control Relay Performance: Testing

ABM INTERNAL FAILURE DTC PRESENT
1. Turn the ignition on.
2. With the scan tool, read DTCs.
3. With the scan tool, erase DTCs.
4. Turn the ignition off.
5. Turn the ignition on.
6. With the scan tool, read DTCs.
  Does the scan tool display 420F-VALVE CONTROL RELAY SUPPLY VOLTAGE PERFORMANCE?
  
  Yes
  - Replace the Anti-Lock Brake Module in accordance with the Service Information.
  - Perform ABS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure .
  No
  - Perform the ABS Intermittent Condition diagnostic procedure.
  - Refer to the ABS-INTERMITTENT CONDITION TEST. See DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure