| DTC 22-01: | EPS Control Unit Internal Circuit Engine Speed Signal (Initial diagnosis) |
| 1. | Turn the ignition switch OFF. |
| 2. | Connect the HDS to the 16P data link connector (DLC). |
| 3. | Start the engine. |
| 4. | Check the NE in the DATA LIST with the HDS. Is there 0 engine rpm at idle? YES - Go to 5. NO - The system is OK at this time.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Disconnect ECM connector No. 2 (58P) and EPS control unit connector D (28P). |
| 7. | Check for continuity between EPS control unit connector D (28P) terminal No. 3 and body ground.
Is there continuity? YES - Repair short to body ground in the wire between the EPS control unit and the ECM.n NO - Go to 8. |
| 8. | Connect ECM connector No. 2 (58P). |
| 9. | Turn the ignition switch ON (II). |
| 10. | Measure the voltage between ECM connector No. 2 (58P) terminal No. 18 and body ground.
Is there battery voltage? YES - Go to 11. NO - Check for loose terminals in the ECM connector No. 2 (58P), and repair if necessary. If no poor connections are found, replace the ECM.n |
| 11. | Measure the voltage between EPS control unit connector D (28P) terminal No. 3 and body ground.
Is there battery voltage? YES - Check for loose terminals in the EPS control unit connector D (28P), 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 the ECM.n |