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ARTICLE BEGINNING 1991 ENGINE PERFORMANCE Vacuum Diagrams Camry, Celica, Corolla, Cressida, Land Cruiser, MR2, Pickup, Previa, Supra, Tercel, 4Runner INTRODUCTION This article contains underhood views or schematics of vacuum hose routing. Use these vacuum diagrams during the visual inspection in F – BASIC TESTING. This will assist in identifying improperly routed vacuum hoses which cause driveability and/or computer-indicated malfunctions. CAMRY VACUUM DIAGRAMS

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1. Disconnect negative battery cable. Raise and support vehicle. Remove lower engine cover. On Celica and Camry, remove right front wheel. On all models, lower vehicle. 2. On MR2, remove right hood side panel and cruise control actuator. Remove right rear wheel. On Celica and Camry, remove alternator from engine and secure out of way. On Camry, remove coolant reservoir tank if it interferes with timing belt removal. Remove engine control (torque) rod from front of engine. 3. On all models, remove accessory drive belts. Using floor jack, slightly raise engine to remove weight from right (timing belt side) engine mount at timing belt cover.
4. Remove right (timing belt side) engine mount and bracket from front of engine. Remove spark plugs. Remove No. 2 timing belt cover and gaskets. See Fig. 1 . 5. Rotate crankshaft clockwise so cylinder No. 1 is at TDC on compression stroke. Cylinder No. 1 is front cylinder at timing belt end of engine. 6. Ensure timing mark on crankshaft pulley aligns with “0″ mark on No. 1 timing belt cover. Ensure hole in camshaft sprocket aligns with alignment mark on camshaft bearing cap. See Fig. 2 . If hole in camshaft sprocket is not aligned with alignment mark, rotate crankshaft clockwise one full revolution.

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Electrical Diagrams PLEASE NOTE: Some diagrams may appear to be missing because of gaps in the number sequences. These “gaps” are actually for diagrams that do not apply to the vehicle model selected. 8w-63-9 (Heated Seats-Front Row) 8w-63-10 (Heated Seats-Front Row) Other Diagrams: Other diagrams referred to by number (i.e. 8W-70-2, etc.) within these diagrams can be found at the vehicle level under Diagrams By Number . See: Diagrams\Electrical\Diagrams By Number

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A/C AMPLIFIER (8) C 28 A/C RELAY BOX (8) D-E 31 A/T IND SW (9) E 35 ABS ACTUATOR (10) D-E 36 ABS COMPUTER (10) D-E 39 ALTERNATOR (1) B 3 AUTO ANTENNA MOTOR (12) D 46 BACK-UP LT SW (12) C 47 BATTERY (1) A 2 BLOWER MOTOR (8) E 30 BLOWER RESISTOR (8) E 29 CHECK CONN (7M-GE) (2) E 4 CHECK CONN (7M-GTE) (3) D-E 11 CHOKE COIL (12) C 46 CLUTCH SW (9) C 35 COLD START INJECTOR (1) B 3 CONDENSER FAN RELAYS (8) C-D 29-30 COOLANT VSV (8) B 29 CRUISE CONTROL ACTUATOR (9) C 35 CRUISE CONTROL COMPUTER (9) A 34 CRUISE CONTROL MAIN RELAY (9) B 35 DEFOG SW (11) D 40 DIODE (7M-GTE) (11) C 41 DIR SW (11) A 40 DOOR KEY CYLINDER LT (7) C 27 DOOR LOCK CTRL RELAY (10) A 37 ECT ECU (9) D-E 32

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Some customers may experience a water leak at the front floor area. Water may be Introduction entering the body due to a body sealer void on the engine compartment rear wall, near the upper door hinge. Repair 1. Raise the vehicle. On the side of the vehicle that has the water leak, remove the front Procedure wheel and the front fender plastic liner. 2. Examine (with flash light and mirror) the body sealer condition on the engine compartment rear wall, near the upper door hinge. Also examine the sealer condition inside the inner fender box frame structure with access holes (see illustration).