Acura Repair Manual Online

The Acura Repair Manual Online provides comprehensive technical information for Acura vehicle maintenance, repair procedures, troubleshooting guides, and technical specifications. This digital manual covers various Acura models including MDX, RDX, TLX, ILX, and NSX with detailed step-by-step instructions for mechanical, electrical, and electronic systems. Below are key sections for maintenance schedules, repair procedures, technical specifications, diagnostic codes, and troubleshooting.

1. Vehicle Maintenance Schedules 2. Engine Repair Procedures 3. Transmission Systems 4. Electrical Systems 5. Brake Systems 6. Suspension & Steering 7. Heating & AC Systems 8. Diagnostic Trouble Codes 9. Technical Specifications 10. Safety Precautions 11. Troubleshooting Guide

Vehicle Maintenance Schedules

Regular maintenance intervals for Acura vehicles to ensure optimal performance and longevity.

Service Interval	Maintenance Items
7,500 miles/12 months	Oil and filter change, tire rotation, brake inspection
15,000 miles/12 months	Air filter replacement, cabin air filter, fluid checks
30,000 miles/24 months	Spark plugs, transmission fluid, brake fluid flush
45,000 miles/36 months	Fuel system cleaning, coolant replacement
60,000 miles/48 months	Timing belt, water pump, comprehensive inspection
90,000 miles/72 months	Major service including all fluids and filters

Engine Repair Procedures

Step-by-step instructions for common Acura engine repairs and maintenance.

Oil Change: Drain old oil, replace filter, refill with recommended 0W-20 synthetic oil.
Spark Plug Replacement: Remove ignition coils, replace plugs with OEM equivalents.
Timing Belt Service: Align timing marks, replace belt and tensioner.
Valve Adjustment: Check and adjust valve clearance as specified.
Fuel System: Replace fuel filter, clean injectors, check fuel pressure.

WARNING! Always disconnect battery before working on electrical components. Use proper safety equipment.

Transmission Systems

Automatic and manual transmission service procedures for Acura vehicles.

Automatic Transmission Fluid: Check level with engine running, use Honda ATF-DW1.
Manual Transmission: Check fluid level, use Honda MTF.
Transmission Filter: Replace internal filter during fluid service.
Shift Solenoids: Test and replace faulty shift solenoids.
Clutch System: Adjust pedal free play, replace worn components.

CAUTION! Use only recommended fluids to prevent transmission damage.

Electrical Systems

Battery: 12V maintenance-free, CCA rating 550-750 depending on model.
Alternator: Output 130-150 amps, test voltage output 13.5-14.5V.
Starter: Draw current 150-200 amps, check solenoid operation.
Lighting Systems: Headlight aiming, bulb replacement procedures.
ECU Systems: Engine control unit diagnostics and programming.
Sensors: Oxygen sensors, MAF, MAP, crankshaft position sensors.
Wiring Diagrams: Color-coded schematics for all electrical circuits.

Brake Systems

Disc brake service procedures including pads, rotors, and hydraulic systems.

Front Brakes: Replace pads at 3mm thickness, resurface or replace rotors. Rear Brakes: Service drum or disc systems, adjust parking brake. ABS System: Bleed procedure requires scan tool activation. Brake Fluid: DOT 3 or DOT 4, replace every 3 years.

Suspension & Steering

Front and rear suspension components and power steering system maintenance.

Strut Replacement: Compress spring safely, replace strut assembly.
Control Arms: Check bushings and ball joints for wear.
Wheel Alignment: Set camber, caster, and toe to factory specifications.
Power Steering: Use Honda PSF-S, check for leaks at rack and pump.
Stabilizer Links: Replace worn sway bar links and bushings.

Tip: Always perform wheel alignment after suspension repairs.

Heating & AC Systems

Climate control system service including AC recharge and heater core replacement.

AC System: Evacuate and recharge with R-134a, check compressor operation.
Heater Core: Flush system, replace core if clogged or leaking.
Blower Motor: Test resistor, replace motor if noisy or inoperative.
AC Compressor: Check clutch engagement, replace if seized.
Condenser: Clean debris, check for leaks and damage.

WARNING! AC system contains high pressure refrigerant - use proper equipment.

Diagnostic Trouble Codes

Common OBD-II codes and their meanings for Acura vehicles.

DTC Code	Description	Possible Causes
P0300	Random/Multiple Cylinder Misfire	Spark plugs, coils, fuel injectors
P0420	Catalyst System Efficiency Below Threshold	O2 sensors, catalytic converter
P0171	System Too Lean (Bank 1)	Vacuum leak, MAF sensor, fuel pressure
P0452	EVAP System Pressure Sensor Low	Gas cap, purge valve, vent solenoid
U0155	Lost Communication With Instrument Panel	Wiring, instrument cluster, CAN bus

Technical Specifications

Factory specifications for various Acura models and systems.

Engine Oil Capacity: 4.2-5.7 quarts depending on engine
Coolant Capacity: 7.4-10.6 quarts with Honda Type 2 coolant
Spark Plug Gap: 0.039-0.043 inches for most models
Tire Pressure: 32-35 PSI (check door jamb sticker)
Wheel Torque: 80-94 ft-lbs for most Acura models
Brake Pad Thickness: Replace at 3mm minimum
Belt Tension: Automatic tensioners with marks for verification

Safety Precautions

Essential safety procedures when working on Acura vehicles.

Always use jack stands - never work under vehicle supported only by jack. Disconnect battery before electrical work. Use fender covers to prevent paint damage. Wear safety glasses and gloves. Properly dispose of fluids and batteries. Follow torque specifications precisely.

CAUTION! Airbag systems contain explosive devices - disconnect battery and wait 3 minutes before service.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery, starter, fuel pump	Check battery voltage, listen for fuel pump, test starter
Overheating	Coolant leak, thermostat, water pump	Pressure test system, check thermostat operation
Brake vibration	Warped rotors, unbalanced tires	Resurface or replace rotors, balance tires
Electrical issues	Bad grounds, alternator, battery	Check ground connections, test charging system
Transmission slipping	Low fluid, worn clutches	Check fluid level and condition, scan for codes

Technical Support: 1-800-382-2238; www.acura.com

Parts Information: Use genuine Acura parts for optimal performance