Wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM
For connector terminal arrangements, harness layouts, and letters in a hexagon (option abbreviation; if not described in wiring diagram), refer to " CONNECTOR INFORMATION ".
Scheme 3
Scheme 4
- EPS system enters the fail-safe mode (that allows the steering force to be controlled without impairing the driveability) if any of the input/output values to/from EPS system (power steering control unit) deviate from the standard range. NOTE: The system enters the fail-safe mode if the engine speed remains at 1, 500 rpm or more for over 10 seconds while the vehicle is stopped. This is normal.
- The fail-safe function is canceled when a vehicle speed signal of 2 km/h (1.2 MPH) or more is inputted or the ignition switch is turned OFF-->ON. EPS system restores the normal operation at that time.
| Mode | Warning lamp | DTC | Detection point (malfunction part) | Error area and root cause |
|---|---|---|---|---|
| Fail-safe function | Vehicle speed signal input | Engine speed is 1, 500 rpm or more and there is no vehicle speed signal input for over 10 seconds during vehicle travel. Vehicle speed signal has abruptly dropped from 30 km/h (19 MPH) or more to 2 km/h (1.2 MPH) or less within 1.4 seconds. |