Check for continuity between ECM/PCM connector terminal E23 and DLC terminal No. 7. DATA LINK CONNECTOR (DLC) Wire side of female terminals Is there continuity? YES - Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM. NO - Repair open in the wire between the DLC and the ECM/PCM (E23). After repairing it, check the DTC with the scan tool/Honda PGM Tester and go to the DTC Troubleshooting Index. Check the scan tool/Honda PGM Tester for DTCs. Are any DTCs indicated? YES - Go to the DTC Troubleshooting Index. NO - Go to step 78. Turn the ignition switch OFF. Turn the ignition switch ON (II).

Measure voltage between ECM/PCM connector terminal E29 and body ground. ECM/PCM CONNECTOR E (31P) Wire side of female terminals Is there about 5 V (or battery voltage)? YES - Go to step 84. NO - Go to step 81. Turn the ignition switch OFF. Disconnect ECM/PCM connector E (31P).