1990-1993 Honda Integra Service and Repair Manual

Engine and Drivetrain

• • Complete repair procedures for the 1.8L DOHC Non-VTEC (B18A1) and 1.7L DOHC VTEC (B17A1 GS-R variant) engines
  • Dual-carburetor and fuel injection system (Honda PGM-FI Multi-Point Injection) diagnostics and repair procedures
  • Engine cooling system service specifications, mechanical thermostat testing, and water pump replacement
  • Exhaust and emissions control system repairs including catalytic converter and early-generation oxygen sensor troubleshooting
  • 5-Speed Manual Gearbox and 4-Speed Electronic Automatic Transmission overhaul, lock-up torque converter clutch service, and fluid specifications
  • Drive axles, constant velocity (CV) joints, and front-wheel-drive hub assembly service procedures

Chassis and Suspension

• • Front suspension repair procedures specific to the Honda independent double-wishbone platform
  • Rear suspension repair procedures specific to the independent trailing-arm double-wishbone layout
  • Steering system diagnostics (Hydraulic Power Steering) and steering rack piston seal specifications
  • Wheel alignment specifications and adjustment procedures for 3-door hatchback and 4-door sedan profiles
  • Wheel bearing packing, press replacement, and hub assembly service procedures
  • Suspension component diagnostics, stabilizer bar end-link replacement, and front/rear subframe torque specifications

Braking Systems

• • Anti-Lock Braking System (ABS / High-Pressure ALB System) diagnostic, accumulator nitrogen pressure safety, and hydraulic modulator procedures
  • Brake hydraulic system, master cylinder, and vacuum booster service specifications
  • Parking brake lever assembly and manual cable tension adjustment procedures
  • Brake component (Front Ventilated Disc and Rear Solid Disc configurations) inspection, minimum thickness machining specs, and pad/rotor replacement

Electrical and Wiring

• • Complete factory wiring diagrams, circuit color coding, and main engine bay harness routing maps
  • 12V Battery, alternator external voltage regulator testing, and starter motor brush diagnostics
  • Under-hood and under-dash fuse/relay box layouts and diagnostic power distribution routes
  • Instrument cluster diagnostics including mechanical cable-driven speedometer, tachometer, and dashboard gauge calibration
  • Lighting system diagnostics (including wrap-around headlight clusters, turn indicators, and cabin illumination)
  • Factory cassette player head units, speaker wiring paths, power antenna motor assembly, and interior comfort feature troubleshooting

Air Conditioning and HVAC

• • Climate control system diagnostics (manual slide lever and fresh/recirculate cable tracking variations)
  • HVAC component replacement procedures (compressor, evaporator core, blower motor resistor, and heater matrix)
  • Refrigerant specifications and servicing procedures (R12 mineral oil system data)
  • Heating and ventilation system troubleshooting, air blend door mechanical adjustment, and duct routing

Body and Interior

• • Interior trim, factory sports bucket seats, center console, and dashboard panel removal and installation
  • Exterior body repair information, sheet metal panel tolerances, hatch/boot sealing, and unibody structural frame dimensions
  • Power sunroof mechanical tracking, drainage clearing lines, weather seals, and motor replacement procedures (where applicable)
  • Door assemblies, power window lift motors, rear glass gas struts, and early central power locking system diagnostics
  • Seatbelt comfort guide mechanisms and early Airbag / Supplemental Restraint System (SRS) component safety handling protocols (where applicable)

Diagnostics and Troubleshooting

• • Diagnostic Trouble Code (DTC) lookup procedures for Honda OBD0 (pre-1992) and early OBD1 equipped variants
  • Honda specific blink-code diagnostic workflows via the 2-pin Service Check Connector (SCS) or looking directly at the LED flash patterns on the physical ECM glass eye lens
  • Component testing specifications for electronic ignition distributors, igniter units, external coil packages, and engine sensors (MAP, ECT, Crank Angle, and TDC sensors)
  • Step-by-step troubleshooting workflows for manual gear syncro grinding, automatic shift timing delays, and electrical parasitic battery draw
  • Engine management control module (ECM/PCM) pin-out identification charts and connector voltage/resistance reference values

Common Error Codes Covered

Engine Codes

• • Code 21: VTEC Solenoid Valve Malfunction (GS-R models)
  • Code 1: Primary Oxygen Sensor Circuit Malfunction / Lazy Sensor
  • Code 43: Fuel Supply System / Pressure Problem
  • Code 9: No. 1 Cylinder Position Sensor (CYP) / Crank Angle Circuit Error
  • Code 3 / Code 5: Manifold Absolute Pressure (MAP) Sensor Circuit Low/High Input

Transmission Codes

• • Code 7 / Shift Indicator Blink: Shift Solenoid Valve A Electrical Malfunction
  • Code 8: Shift Solenoid Valve B Electrical Malfunction
  • Code 15: Mainshaft Speed Sensor Circuit Malfunction

ABS / ALB and Chassis Codes

• • Code 1-1: Front Right Wheel Speed Sensor Open or Short Circuit
  • Code 1-2: Front Left Wheel Speed Sensor Open or Short Circuit
  • Code 5-5: ALB Pump Motor Malfunction / Fluid Pressure Leak

Engine Ancillary and Body Codes

• • Code 41: Alternator Control Circuit / Field Wire Failure
  • Code 12: Exhaust Gas Recirculation (EGR) System Lift Sensor Fault

This manual is ideal for:

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