| 1. | Turn the ignition switch ON (II). |
| 2. | Measure voltage between data link connector (DLC) terminal No. 16 and body ground.
Is there battery voltage? YES - Go to 3. NO - Repair open in the wire between DLC terminal No. 16 and the No. 8 (15A) fuse in the under-hood fuse/relay box.n |
| 3. | Measure voltage between DLC terminals No. 4 and No. 16.
Is there battery voltage? YES - Go to 4. NO - Repair open in the wire between DLC terminal No. 4 and body ground.n |
| 4. | Measure voltage between DLC terminals No. 5 and No. 16.
Is there battery voltage? YES - Go to 5. NO - Repair open in the wire between DLC terminal No. 5 and ECM/PCM (E3).n |
| 5. | Measure voltage between DLC terminals No. 5 and No. 7.
Is there 8.5 V or more? YES - Go to 10. NO - Go to 6. |
| 6. | Turn the ignition switch OFF. |
| 7. | Disconnect ECM/PCM connector E (31P). |
| 8. | Check for continuity between DLC terminal No. 7 and body ground.
Is there continuity? YES - Repair short to ground in the wire between DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the HDS or the scan tool and go to the DTC Troubleshooting Index.n NO - Go to 9. |
| 9. | Check for continuity between DLC terminal No. 7 and ECM/PCM terminal E23.
Is there continuity? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/ PCM.n NO - Repair open in the wire between DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the HDS or the scan tool and go to the DTC Troubleshooting Index.n |
| 10. | Turn the ignition switch OFF. |
| 11. | Disconnect ECM/PCM connector E (31P). |
| 12. | Turn the ignition switch ON (II). |
| 13. | Measure voltage between DLC terminals No. 5 and No. 7.
Is there 0 V? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/ PCM.n NO - Repair short to ground in the wire between DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the HDS or the scan tool and go to the DTC Troubleshooting Index.n |