Warning When performing any inspection or service procedure on this vehicle ensure following service precautions are followed to prevent personal injury or death due to the extremely high voltage

The following service precautions must be followed:

• Ensure ignition is off and ignition key is removed from ignition before performing any inspection or service procedure in engine compartment, as engine may automatically start and shut off when ignition is on and READY light is illuminated. READY light is displayed just above the shift lever position indicator on instrument cluster at center of instrument panel.

• Read all service and warning labels in engine compartment before performing any procedures in engine compartment.

• All high-voltage wiring harness connectors contain Orange connectors. DO NOT touch any wiring harness that contains Orange connectors.

• High-voltage battery and other high-voltage components may be identified by HIGH VOLTAGE caution labels on them. DO NOT touch these components.

• If necessary to inspect or service high-voltage system, ensure ignition is off. Remove service plug and wait at least 5 minutes to ensure high voltage is fully discharged before touching any high-voltage wiring harness, connectors or components. Service plug is located on service plug assembly at driver's side front corner of trunk compartment, near high-voltage battery. See Fig. 1 . Ensure service plug is stored in a location in which no one may install service plus while technician is working on the vehicle.

2001 ENGINE PERFORMANCE Theory & Operation

• If necessary to touch any high-voltage wiring harness, connectors or components, ensure service plug is removed and battery voltage or less exists at electrical connector. Use Toyota insulated gloves when touching any high-voltage wiring harness, connectors or components. Ensure insulated gloves are dry and in good condition and that no holes exist in insulated gloves by applying air to insulated glove before touching any high-voltage wiring harness, connectors or components.

• DO NOT wear any metal objects while working on vehicle which may accidently drop and cause a short circuit.

• If any high-voltage wiring harness connector is disconnected, ensure terminal on wiring harness connector is wrapped with tape to prevent wiring harness connector from contacting any surface.

• If servicing high-voltage system, place sign on roof of vehicle to indicate to other technicians that highvoltage system is being serviced.

2001 ENGINE PERFORMANCE Theory & Operation

Recorte Colagem Carros

G00023124

Fig. 1: Locating Service Plug & Service Plug Assembly (Prius) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

G00023124

Fig. 1: Locating Service Plug & Service Plug Assembly (Prius) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2001 ENGINE PERFORMANCE Theory & Operation

Do It Yourself Car Diagnosis

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