 | 1. Connect the special equipment for vehicle maintenance to the PCM, as shown in the figure. |
| 2. Start up the engine. |
| 3. Increase the speed of the crankshaft of the engine, and the engine is not warmed up yet, check the battery positive voltage (V) on the output PCM 23. |
| 4. Warm up the engine to normal operating temperature and the set idle. |
| 5. Increase the speed of the crankshaft of the engine and make sure that the instrument indicates the voltage 1.5-12 V. |
| 6. Ground wire jumper pin 23 PCM. |
| 7. Check for correct functioning of the engine by increasing the speed of the crankshaft, or stalls at idle. |