HDS does not communicate with the PCM or the vehicle (PGM-FI System)

Diagnostic procedure 

• Do the network communications system symptom troubleshooting - Refer to: Network Communications Symptom Troubleshooting - HDS does not communicate with the vehicle () or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS with Connection to CAN Gateway) () or Network Communications Symptom Troubleshooting - B-CAN Lost Communication () or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS without Connection to CAN Gateway) () or Network Communications Symptom Troubleshooting - F-CAN BUS-OFF (CAN BUS without Connection to CAN Gateway) () .

Also check for 

Correct HDS software