This Haynes repair manual covers all Subaru Legacy Outback and Subaru Legacy Brighton, 1990 through 1999.
Book Excerpt: 1990-1999 Subaru Legacy Outback, Brighton Repair and Service Manual CHAPTER 4 | FUEL AND EXHAUST SYSTEMS

TURBOCHARGER - CHECK Refer to illustration 15.8

1. While it is a relatively simple device, the turbocharger is also a precision component which can be severely damaged by an interrupted oil or coolant supply or loose or damaged ducts.
2. Due to the special techniques and equipment required, checking and diagnosis of suspected problems dealing with the turbocharger should be left to a dealer service department or other qualified repair shop. The home mechanic can, however, check the connections and linkages for security, damage and other obvious problems. Also, the home mechanic can check components that govern the turbocharger such as the wastegate solenoid and wastegate actuator. Refer to the checks later in this Section.
3. Because each turbocharger has its own distinctive sound, a change in the noise level can be a sign of potential problems.
4. A high-pitched or whistling sound is a symptom of an inlet air or exhaust gas leak.
5. If an unusual sound comes from the vicinity of the turbine, the turbocharger can be removed and the turbine wheel inspected. Caution: All checks must be made with the engine off and cool to the touch and the turbocharger stopped or personal injury could result. Operating the engine without all the turbocharger ducts and filters installed is also dangerous and can result in damage to the turbine wheel blades.

CHAPTER 5 | ENGINE ELECTRICAL SYSTEMS

4 BATTERY CABLES: CHECK AND REPLACEMENT

1. Periodically inspect the entire length of each battery cable for damage, cracked or burned insulation and corrosion. Poor battery cable connections can cause starting problems and decreased engine performance.
2. Check the cable-to-terminal connections at the ends of the cables for cracks, loose wire strands and corrosion. The presence of white, fluffy deposits under the insulation at the cable terminal connection is a sign that the cable is corroded and should be replaced. Check the terminals for distortion, missing mounting bolts and corrosion.
3. When replacing the cables, always disconnect the negative cable first and hook it up last or the battery may be shorted by the tool used to loosen the cable clamps. Even if only the positive cable is being replaced, be sure to disconnect the negative cable from the battery first.
4. Disconnect and remove the cable. Make sure the replacement cable is the same length and diameter.

Subject: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 Subaru Legacy Outback, Legacy Brighton service, maintenance, repair. ISBN-10: 1563926466 | ISBN-13: 9781563926464