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2003 Toyota 4runner CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Toyota REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Air Bag System Precautions -> Toyota -> Disarming
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
The Supplemental Restraint System (SRS) incorporates a back up energy source that can maintain sufficient voltage to cause a deployment for up to 90 seconds after the ignition switch is turned off and the battery is disconnected.
When the battery is disconnected all vehicle memory is lost, make notes of radio station settings. Never use a back-up power source from outside the vehicle.
- Note radio station settings before disconnecting battery, as all vehicle memory will be lost.
- Place ...
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BRAKE SERVICE PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Toyota -> Power Brake Units -> Diagnosis & Testing -> Air Tightness Check -> Brake Booster Operational Test -> Operating Check
Vehicle: 2003 Toyota 4runner 4.0 V6 GAS
Brake Booster Operational Test
Operating Check
- Depress brake pedal several times with engine stopped, and ensure pedal reserve distance has no change, Fig. .
- Depress brake pedal and start engine. If pedal drops slightly, operation is normal.
Air Tightness Check
- Start engine and stop after one or two minutes.
- Depress brake peda...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Toyota -> Fuel Filter Scheduled Maintenance -> 1986-06 Models -> Normal Service -> Severe Service
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
Normal Service
Service as r...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
Disassemble
This procedure describes a driveline equipped with cardan joint in tube yoke. Driveline equipped with companion/slip yoke repeat steps to remove remaining cardan joint.
- Place driveshaft on suitable workbench. Do not damage driveshaft when servicing on workbench. Ensure driveline and components are reference marked to prevent driveline imbalance. Do not tighten driveshaft too tightly in a vise because this will cause driveline to become out of balance and result in driveline vibration.
- Tap outside of bearing cap with a drift to loosen snap ring.
- Remove snap ri...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Starter, Replace
Vehicle: 2003 Toyota 4runner 4.0 V6 GAS
- Disconnect battery ground cable.
- On models equipped with audio coded anti-theft system, obtain three-digit system code.
- On all models, if required, remove battery, battery tray and/or igniter bracket.
- Remove air cleaner assembly, if required.
- Disconnect electrical connec...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Cabin Air Filter Service -> Toyota -> 2003-09 4Runner
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
On 2003 models, under normal operating conditions the cabin air filter should be replaced every 22,500 miles. In dusty areas change the cabin air filter every 10,000 miles.
On 2004-09 models, the cabin air filter should be replaced every 36 months or 30,000 miles. The filter should be replaced more often if air flow is less than normal.
- Open the glove compartment door.
- Remove the screw retaining the damper rod to the righthand side of the glove compartment door, then detach the damper rod, Fig. .
- Push inward at each side of the glove compartment door to disengage the retainers, then...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Toyota -> Engine Oil Reminder/Maintenance Required Lamp -> 2003-09 4Runner
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
The maintenance Required lamp will illuminate for approximate 3 seconds when the ignition switch is placed in the On position. The lamp will illuminate when an engine oil change interval is due. After changing the engine oil the lamp may be reset as fo...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
- Remove engine under cover, the drain engine coolant into a suitable container.
- Disconnect radiator reservoir hose from radiator, then radiator upper hose from radiator.
- Disconnect radiator lower hose from radiator, then the automatic transmission oil cooler hoses from radiator.
- On all models, remove radiator reservoir tank, then the automatic transmission oil cooler hoses from clamp on radiat...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota 4runner AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota 4runner 4.7 V8 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota 4runner AUTOMOBILES
Component location diagrams for most 2003 Toyota 4runner cars and light trucks sold in the U.S. from 1990+.
Seat Belt Warning Components Diagram for 2003 Toyota 4runner 4.0 V6 GAS Components on diagram: |
Front Power Seat Control Components Diagram for 2003 Toyota 4runner 4.0 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Toyota 4runner AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Toyota 4runner cars and light trucks sold in the U.S.
2003 Toyota 4runner 4.7 V8 GAS Wiring Diagram Components on diagram: |
2003 Toyota 4runner 4.0 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Toyota 4runner AUTOMOBILES
OEM TSB listings for most 2003 Toyota 4runner cars and light trucks sold in the U.S. from 1985+.
Document: A750E Transmission Extension Housing Seal Service Tip Vehicle: 2003 Toyota 4runner 4.7 V8 GAS Auto Systems: |
Document: LONG TERM VEHICLE STORAGE GUIDELINES Vehicle: 2003 Toyota 4runner 4.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota 4runner AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota 4runner cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 Toyota 4runner cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 Toyota 4runner cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 Toyota 4runner cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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