RSX L4-2.0L (VTEC) (2002)
Data Link Connector: Testing and Inspection
DLC Circuit Troubleshooting
If the ECM/PCM does not communicate with the OBD II scan tool, Honda PGM Tester, or I/M test equipment, do this troubleshooting procedure.
1. 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.9 BACK UP (7.5A) fuse in the under-hood fuse/relay box.
2. Measure voltage between DLC terminals No.4 and No.16.
Is there battery voltage?
YES - Go to step 3.
NO - Repair open in the wire between DLC terminal No. 4 and body ground.
3. Measure voltage between DLC terminals No.5 and No.16.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between DLC terminal No. Sand body ground.