2003 Honda Insight Service and Repair Manual

Engine and Drivetrain

• Complete repair procedures for the 1.0L SOHC 12-Valve 3-Cylinder ECA1 Engine
• Integrated Motor Assist (IMA) hybrid system overhaul, lean-burn operation calibration, and ultra-thin electric motor safety protocols
• Fuel injection system (Honda PGM-FI with VTEC-E low-friction valvetrain) diagnostics and repair procedures
• Engine cooling system service specifications and specialized water pump replacement instructions
• Exhaust and emissions control system repairs including NOx adsorptive catalytic converter servicing
• 5-Speed Manual Gearbox and Continuously Variable Transmission (CVT) troubleshooting, fluid specs, and overhaul procedures
• Drive axles, constant velocity (CV) joints, and front-wheel-drive aluminum hub assembly service procedures

Chassis and Suspension

• Front suspension repair procedures specific to the lightweight aluminum MacPherson strut platform
• Rear suspension repair procedures specific to the semi-independent torsion beam layout
• Steering system diagnostics for the early-generation Electric Power Steering (EPS) and rack assembly specifications
• Wheel alignment specifications and adjustment procedures for aerodynamic recessed wheels
• Wheel bearing replacement procedures
• Suspension component diagnostics and subframe structural safety troubleshooting

Braking Systems

• Anti-Lock Braking System (ABS) diagnostic procedures
• Brake hydraulic system, master cylinder, and vacuum booster service specifications
• Regenerative braking coordination and electronic brake-force distribution (EBD) system testing
• Parking brake service and manual cable adjustment procedures
• Brake component (Front Disc and Rear Lightweight Drum) inspection, machining, and replacement procedures

Electrical and Wiring

• Complete factory wiring diagrams, ground distribution networks, and harness routing schematics
• 12V auxiliary battery, 144V High-Voltage NiMH hybrid battery module, and IMA motor winding diagnostics
• Passenger compartment relay maps, power distribution boxes, and fuse configurations
• Instrument cluster diagnostics including digital dashboard telemetry and fuel economy display calibration
• Lighting system diagnostics (including main/dipped beam, turn indicators, and cabin illumination)
• Audio system, clock, and interior comfort feature troubleshooting

Air Conditioning and HVAC

• Climate control system diagnostics (manual variation with fuel-saving eco routing)
• HVAC component replacement procedures (compressor, evaporator core, blower motor, and heater matrix)
• Refrigerant specifications and servicing procedures (R134a systems)
• Heating and ventilation system troubleshooting, duct routing, and ventilation filter care

Body and Interior

• Interior trim, lightweight bucket seats, and dashboard panel removal and installation
• Exterior body repair information, aerodynamic underbody pan paneling, and all-aluminum monocoque chassis structure details
• Rear wheel skirts, door assemblies, manual/power windows, and manual locking system diagnostics
• Airbag and Supplemental Restraint System (SRS) safety protection service procedures

Diagnostics and Troubleshooting

• Diagnostic Trouble Code (DTC) lookup procedures for OBD2 compliant systems
• Honda specific blink-code diagnostic workflows via the Service Check Connector (SCS) paper-clip shortcut mode
• Component testing specifications for hybrid powertrain sensors (MAP, ECT, CKP, and TDC)
• Step-by-step troubleshooting workflows for CVT belt slippage and high-voltage line diagnostic tracing
• Engine management control module (ECM/PCM) and hybrid powertrain control module service procedures

Common Error Codes Covered

Engine Codes

• P1259: VTEC System Malfunction
• P0171: Fuel Trim System Lean (Bank 1)
• P0300: Random/Multiple Cylinder Misfire Detected
• P0420: Catalyst System Efficiency Below Threshold
• P0107: Manifold Absolute Pressure (MAP) Sensor Circuit Low Input

Transmission Codes

• P0700: Automatic Transmission Control System Malfunction
• P0715: Mainshaft Speed Sensor Circuit Malfunction
• P1890: CVT Shift Control System Malfunction / Linear Solenoid Fault

ABS and Chassis Codes

• Code 11: Right Front Wheel Speed Sensor Open or Short Circuit
• Code 13: Left Front Wheel Speed Sensor Open or Short Circuit
• Code 61: Ignition Voltage/Low Battery Supply Voltage to ABS Modulator

Network Communication Codes

• U0100: Lost Communication with ECM/PCM
• U1290: Controller Area Network (CAN) Smart Entry Malfunction

Body Control Codes

• B1241: B-CAN Power Window Switch Communication Problem
• B1C70: Curtain Airbag Inflator Circuit Shorted

This manual is ideal for:

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