1985 Honda Accord Service and Repair Manual

Engine and Drivetrain

• Complete repair procedures for the engine options: 1.8L SOHC 12-Valve Inline-4 (EK1 Carbureted and ES3 PGM-FI Fuel Injected)
• Fuel system diagnostics and repair procedures for Honda PGM-FI and Keihin three-barrel carburetor configurations
• Engine cooling system service specifications
• Exhaust and emissions control system repairs
• Transmission overhaul and troubleshooting procedures for the 5-speed manual and 4-speed automatic with lock-up torque converter
• Driveshaft, differential, and front axle service procedures

Chassis and Suspension

• Front suspension repair procedures specific to the vehicle platform: MacPherson strut front suspension system
• Rear suspension repair procedures specific to the vehicle platform: Independent MacPherson strut rear suspension system
• Steering system diagnostics and service specifications (including speed-sensitive power steering layouts)
• Wheel alignment specifications and adjustment procedures
• Wheel bearing replacement procedures
• Suspension component diagnostics and troubleshooting

Braking Systems

• Brake hydraulic system service specifications (Front disc and rear drum configurations)
• Parking brake service procedures
• Brake component inspection and replacement procedures

Electrical and Wiring

• Complete factory wiring diagrams
• Battery, charging, and starting system diagnostics
• Integrated Control Unit diagnostics and testing procedures (Fuse box relay logic)
• Power distribution and fuse box schematics
• Lighting system diagnostics (including headlight circuits and instrument cluster wiring)
• Audio system troubleshooting (Factory AM/FM cassette player and speaker wiring layouts)

Air Conditioning and HVAC

• Climate control system diagnostics
• HVAC component replacement procedures (R12 refrigerant specifications)
• Refrigerant servicing procedures
• Heating and ventilation system troubleshooting

Body and Interior

• Interior trim removal and installation procedures
• Exterior body repair information
• Door, window, and manual/power locking system diagnostics
• Lighting system repairs
• Occupant restraint system service procedures (Manual three-point lap and shoulder seatbelts)

Diagnostics and Troubleshooting

• Diagnostic lookup procedures via Engine Control Unit (ECU) LED blink counters (applicable to PGM-FI models)
• Service Connector test jump methods
• Component testing specifications
• Step-by-step troubleshooting workflows

Common Error Codes Covered

This manual provides diagnostic and repair procedures for manufacturer-specific fault codes, including:

Engine Codes (ECU LED Blink Codes for Fuel-Injected Variants)

• Code 1: Oxygen Sensor Circuit / Defective Exhaust Gas Sensor
• Code 3: Manifold Absolute Pressure (MAP Sensor) electrical circuit defect
• Code 5: MAP Sensor mechanical vacuum circuit error
• Code 6: Engine Coolant Temperature (ECT Sensor) or wiring fault
• Code 10: Intake Air Temperature (IAT Sensor) failure

Body Control and Electrical Faults

• Integrated Control Unit: Intermittent wiper timer circuit fault
• Integrated Control Unit: Seatbelt warning chime / timer control unit malfunction

And additional diagnostic codes, test procedures, wiring diagrams, and repair instructions specific to this generation.

Who Is This Manual For?

• Professional automotive workshops
• Independent repair garages
• Mobile mechanics
• Automotive technicians
• Vehicle owners performing DIY repairs
• Automotive training institutions

If you are troubleshooting, maintaining, servicing, or repairing a 1985 Honda Accord, this is the factory workshop manual you need.