Control Unit Inspection Table
The standard values (voltage), measured with an analog tester in contact with control unit terminal, are shown below:
CONTROL UNIT INSPECTION
| Inspection terminal | Condition | Application | Standard |
|---|---|---|---|
| Power steering control unit | |||
| 1 | Ignition switch ON | Power | Battery voltage (approx. 12V) |
| 2 | Ground | 0V | |
| 3 | Vehicle speed signal | When the speed is very low, the voltage fluctuates between approximately 0V and approximately 5V or higher. | |
| 5 | Engine running | Engine revolution signal | Measure the tachometer drive signal. Refer to "ECM Harness Connector Terminal Layout" |
| 7 | Solenoid valve | Normal 0 km/h ((0 MPH) : Approx. 4.4 - 6.6V 100 km/h (62 MPH): Approx. 2.4 - 3.6V When the fail-safe function is activated: 0 - 1,500 rpm : Approx. 4.4 - 6.6V 1,500 - 3,000 rpm : Approx. 3.5V 3,000 rpm or more: Approx. 2.1V |