| 1. | Turn the ignition switch OFF. |
| 2. | Connect the HDS to the data link connector (DLC). |
| 3. | Turn the ignition switch ON (II). |
| 4. | Verify the DTC. Is DTC indicated? YES - Perform the appropriate troubleshooting for the code indicated.n NO - Go to 5. |
| 5. | Turn the ignition switch OFF. |
| 6. | Check the No. 1 (70A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Reinstall the fuse, and go to 7. NO - Replace the fuse, and recheck. If the fuse is blown, check for a short to body ground in this fuse circuit.n |
| 7. | Disconnect the EPS control unit connector A (2P). |
| 8. | Measure the voltage between the EPS control unit connector A (2P) terminal No. 2 and body ground.
Is there battery voltage? YES - Go to 9. NO - Repair open in the wire between the EPS control unit and under-hood fuse/relay box.n |
| 9. | Check for continuity between EPS control unit connector A (2P) terminal No. 1 and body ground.
Is there continuity? YES - Go to 10. NO - Repair open in the wire between the EPS control unit and body ground (G402).n |
| 10. | Check for DTCs in the gauge control module (tach) with the HDS. Is DTC indicated? YES - Perform the appropriate troubleshooting for the code indicated.n NO - Go to 11. |
| 11. | Disconnect the gauge control module (tach) connector (36P) and EPS control unit connector D (28P). |
| 12. | Check for continuity between EPS control unit connector D (28P) terminal No. 1 and gauge control module (tach) connector (36P) terminal No. 1.
Is there continuity? YES - Go to 13. NO - Repair open in the wire between the EPS control unit and gauge control module (tach).n |
| 13. | Check for continuity between EPS control unit connector D (28P) terminal No. 15 and gauge control module (tach) connector (36P) terminal No. 19.
Is there continuity? YES - Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit.n NO - Repair open in the wire between the EPS control unit and gauge control module (tach).n |