NOTE: If the ECM/PCM does not communicate with the HDS, do this troubleshooting procedure. Check that MIL circuit is normal, then do this troubleshooting. Measure voltage between DLC terminal No. 16 and body ground. Is there battery voltage?
YES | - | Go to Step 2 .
NO | - | Repair open in the wire between DLC terminal No. 16 and the No. 8 FI ECU (ECM/PCM) (15 A) fuse in the under-hood fuse/relay box.■