| A/C relay | 16 | A/C compressor clutch relay | A/C compressor clutch relay turns from OFF to ON. | Ignition switch: "ON" | Clicks when A/C compressor clutch is driven. |
| Cooling fan | 14 | Radiator fan, A/C condenser fan | Drive the fan motor. | Ignition switch: "ON" | Radiator fan and A/C condenser fan rotate. |
| EVAP. emission purge SOL. Valve | 10 | Evaporative emission purge solenoid | Solenoid valve turns from OFF to ON. | Ignition switch: "ON" | Clicks when solenoid valve is driven. |
| EVAP. emission ventilation SOL. | 15 | Evaporative emission ventilation solenoid | Solenoid valve turns from OFF to ON. | Ignition switch: "ON" | Clicks when solenoid valve is driven. |
| Fuel pump | 9 | Fuel pump | Fuel pump operates and fuel is recirculated. | - Ignition switch: "ON"
- Listen near the fuel tank for the sound of fuel pump operation.
| Sound of operation is heard. |
| Ignition timing 5 BTDC | 11* | Basic ignition timing | Set to ignition timing adjustment mode. | - Engine: idling
- Connect timing light
| 5°BTDC |
| Injector stop | 1 | Injectors | Specified injector is stopped. | Engine: warm up, idle (cut the fuel supply to each injector in turn and check cylinders which don't affect idling.) | Idle condition is changed by stopping selected cylinder: this can cause an unstable condition and the engine may stall. |
| Oil control valve | 17 | Oil feeder control valve | Switch the oil feeder control valve from OFF to ON. | Engine: warm up, idle | When the valve is actuated, operating noise is audible. |
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