1991-1995 Honda Legend Service and Repair Manual

Engine and Drivetrain

• 3.2L C32A SOHC V6 Engine: Full mechanical teardown, timing belt replacement procedures, torque specifications, and cylinder head rebuilding for both the standard 200 hp and Type II 230 hp engine variants.
• PGM-FI Sequential Fuel Injection: Diagnostic workflows for the early generation Honda Programmed Fuel Injection system, including main relay and oxygen sensor testing.
• Engine Cooling System: Maintenance parameters for the radiator, mechanical thermostat, water pump, and vehicle cooling paths.
• Exhaust and Emissions Control: Troubleshooting for the vacuum-operated Exhaust Gas Recirculation (EGR) system, catalytic converter efficiency, and evaporative emissions controls.
• 4-Speed Automatic and 5-Speed/6-Speed Manual Transmissions: Hydraulic schematics, clutch overhaul setups, shift solenoid troubleshooting for automatic models, and manual transmission synchronizer replacement guides.
• Drivetrain Layout: Detailed repair steps for the unique longitudinal front-wheel-drive differential, intermediate shafts, and front constant-velocity (CV) joints.

Chassis and Suspension

• Front Double Wishbone Suspension: Upper and lower control arm replacement, ball joint inspection, and shock absorber assembly steps.
• Rear Double Wishbone Suspension: Geometry setup, trailing arm bushing service, and coil spring replacement protocols.
• Speed-Sensitive Power Steering: Mechanical troubleshooting of the hydraulic rack and pinion pump with speed-dependent bypass control valves.
• Wheel Alignment Specifications: Accurate factory baseline markers for manual toe-in, camber, and caster tracking.
• Wheel Hub and Bearings: Front and rear press-fit wheel bearing replacement procedures and spindle nut torque values.

Braking Systems

• Anti-lock Braking System (ABS): Pinpoint voltage testing for the high-pressure accumulator pump, hydraulic modulator unit, and wheel speed sensors.
• Brake Hydraulic System: Master cylinder overhaul, proportioning valve testing, and multi-wheel brake bleeding sequence.
• Traction Control System (TCS): Diagnostic steps for early standalone traction control actuators, throttle cable linkages, and companion control valves.
• Parking Brake Assembly: Center console handbrake lever cable adjustments and rear internal drum-in-disc shoe replacement.
• Brake Component Inspection: Minimum thickness tolerances for front and rear ventilated brake rotors and friction material limits.

Electrical and Wiring

• Complete Factory Wiring Diagrams: Full structural schematics tracing vehicle wiring harnesses, ground locations, and inline terminal block pins.
• Charging and Starting System: Diagnostic parameters for the engine alternator, starter solenoid mechanical repair, and ignition switch contacts.
• Integrated Control Unit (ICU): Troubleshooting paths for the integrated control unit handling interval timers, chimes, and courtesy lights.
• Power Distribution Network: Under-hood and under-dash fuse block map identification, main fuel pump relays, and circuit breaker limits.
• Lighting Infrastructure: Dual-halogen headlight assemblies, cornering light circuits, dashboard dimming rheostats, and taillight wiring.
• Premium Audio and Equipment: Pinout layouts for the factory cassette receiver head unit, optional trunk-mounted 6-disc CD changer, and power telescopic antenna.

Air Conditioning and HVAC

• Automatic Climate Control: Diagnostics for the vacuum-actuated blend doors, aspirator fans, dashboard control panel, and solar ambient temperature sensors.
• HVAC Core Componentry: Heater core plumbing paths, evaporator core housing removal, and blower motor resistor troubleshooting.
• Refrigerant Specifications: Technical parameters for converting or servicing systems using original R12 or early factory R134a weight layouts, including compressor oil requirements.

Body and Interior

• Premium Cabin Trim: Safe removal steps for the center console console, dashboard wood trim overlays, and power seat tracking adjustments.
• Exterior Shell and Glass: Front and rear bumper unbolting spots, panel gap margins, power window regulators, and manual sunroof tracks.
• Supplemental Restraint System (SRS): Handling protocols for the early generation driver-side airbag (and passenger-side airbag on 1993+ models), cable reels, and standalone SRS impact sensors.

Diagnostics and Troubleshooting

• Service Check Connector Diagnostics: Step-by-step diagnostic workflows utilizing manual flash code retrieval via the 2-pin diagnostic jumper connector.
• PGM-FI System Checks: Multimeter testing procedures for map sensors, throttle position sensors, and idle air control valves.
• Electrical Component Bench Tests: Resistance and continuity limits for ignition distributors, external coils, crank position sensors, and transmission lock-up solenoids.

Common Error Codes Covered

Engine Codes (Flash Codes)

• Code 1: Primary Oxygen Sensor Circuit Failure or Lean/Rich Malfunction
• Code 3: Manifold Absolute Pressure (MAP) Sensor Circuit Low or High Input
• Code 7: Throttle Position (TP) Sensor Circuit Fault
• Code 12: Exhaust Gas Recirculation (EGR) System Lift Sensor Deviation
• Code 14: Idle Air Control (IAC) Valve Electronic Circuit Malfunction

Transmission Codes (Flash Codes)

• Code 1: Lock-up Solenoid Valve ‘A’ Circuit Disconnection or Short
• Code 2: Lock-up Solenoid Valve ‘B’ Circuit Disconnection or Short
• Code 7: Shift Solenoid Valve ‘A’ Mechanical or Electrical Failure

ABS and Chassis Codes (Flash Codes)

• Code 1-1: Right Front Wheel Speed Sensor Noise or Open Circuit
• Code 1-3: Left Front Wheel Speed Sensor Noise or Open Circuit
• Code 5-1: ABS Motor Over-Run or Pressure Modulator Unit Lock Failure

Network Communication Codes

• Code 20: Engine Control Module (ECM) to Transmission Control Module (TCM) Data Bus Interruption

Body Control Codes (SRS Flash Codes)

• Code 1: Driver-side Airbag Inflator Open Circuit or High Resistance Malfunction
• Code 5: Internal SRS Unit Backup Power Supply or Central Processor Fault

And thousands of additional diagnostic codes, test procedures, wiring diagrams, and repair instructions.

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