Acura Integra 1990–1993 Service Manual – LS, GS, RS & GS-R (P/N 61SK703)

This Honda factory service manual for the Acura Integra LS, GS, RS, and GS-R (P/N 61SK703) includes 1993 U.S. and Canadian model-identification tables. The PDF opens with a 1990 cover, followed by the first-edition introduction dated August 1992.

PDF Navigation and Wiring Legibility

Chapter tabs and diagram labels: Use the printed chapter tabs and indexes to navigate the PDF. The file has no searchable text or embedded bookmarks. Zooming makes most small wire codes and connector numbers easier to read. Scan marks obscure a few areas on the final wiring sheets.

The ZIP contains one printable PDF with 1,022 pages, including one cover page and 30 blank pages. A short HTML readme is included separately.

Engine Overhaul, Transaxle Service, and Circuit Diagnosis

These selected procedures show the scope of the manual. Other topics include towing and Canadian daytime running light troubleshooting.

• Engine overhaul: Step-by-step procedures cover engine removal and installation, cylinder-head overhaul, timing belt tensioning, and engine oil-pressure testing.
• Manual transmission: YS1 overhaul covers removal, internal disassembly, synchronizer inspection, thrust-shim adjustment, and reassembly. The clutch chapter covers the cable-operated system.
• Automatic transaxle: MPRA identification and automatic differential repair are included. Internal automatic transmission repair requires Section 14, which is absent from this PDF.
• PGM-FI and VTEC diagnosis: ECM self-diagnostics and connector-terminal views support no-start and sensor checks. Separate flowcharts cover the VTEC solenoid valve and pressure switch.
• Conventional brakes and ABS: Caliper overhaul, hydraulic bleeding, ABS fault isolation, and ALB Checker function tests cover mechanical and electrical checks.
• Steering and suspension: Procedures cover speed-sensitive power-steering pressure and assist checks, pump and steering-gearbox overhaul, wheel alignment, and hub bearing replacement.
• Electrical troubleshooting: Starting and charging tests, power distribution diagrams, and connector identification support circuit tracing through the vehicle harness.

The manual suits technicians and experienced owners who already know standard shop procedures. Several diagnosis and overhaul jobs call for dedicated test or service tools.

Engine, Cooling, and Driveline Details

The B18A1 section covers valve-seal replacement with the cylinder head in place. B17A1 procedures include manual and air-assisted rocker-arm checks, piston oil-jet inspection, and oil cooler service. The head-removal procedures flag the risk of warpage from loosening bolts out of sequence. On the B17A1, piston and connecting-rod removal can bend the oil-jet nozzles.

Cooling procedures cover radiator-cap and thermostat tests, water-pump inspection, and coolant refill and bleeding. The maintenance schedule lists coolant, brake-fluid, and transmission-fluid replacement intervals. Lift and support-point diagrams accompany the powertrain-handling precautions.

Clutch service includes pressure-plate and flywheel inspection and release-bearing service. Driveshaft procedures cover CV-joint rebuilding and intermediate-shaft bearing replacement. The differential sections distinguish manual-transmission backlash and shim adjustment from automatic-transmission side-clearance inspection.

Fuel and Emissions Fault Isolation

PGM-FI checks cover the main relay, injectors, and Fast Idle Thermo Valve. The B18A1 automatic procedures address the starting air valve and EGR system, while the B17A1 material covers knock sensor diagnosis. The fuel-pressure inspection shows how to narrow an out-of-range reading to the pump, regulator, filter, or fuel lines before replacing parts.

Steering and ABS Diagnostics

The power-steering fluid flow diagram supports fault tracing through the pump and steering gear. The chapter also covers rack-guide adjustment. Suspension procedures include ball joints, upper-arm bushings, and front and rear dampers.

The ABS circuit diagram supports checks of the modulator, pump motor, wheel sensors, and fail-safe relays. The tool table lists ALB Checker 07HAJ-SG0010B or 07HAJ-SG00100 for the U.S. and 07HAJ-SG00200 for Canada. The ABS procedures address stored pressure in the accumulator.

Body, Climate Control, and Wiring

Body procedures cover door and glass adjustment, windshield replacement, moonroof drains and cables, and separate frame repair charts for manual and automatic models. The heater section separates lever-type and button-type control troubleshooting.

R-12 air-conditioning service covers performance and pressure tests, leak checks, evacuation and charging, and Nippondenso compressor-clutch service. The A/C and ABS chapters contain their own circuit diagrams. The final wiring section contains sheets 1–12 of the 14 indexed sheets. Electrical procedures also cover power windows, power locks, and U.S. automatic shoulder belts.

Fuel and Oil Pressure Test Examples

The fuel-pressure inspection lists 41–48 psi (290–340 kPa) for the B18A1 and 48–56 psi (340–390 kPa) for the B17A1 at idle with the regulator vacuum hose disconnected and pinched.

For engine oil at 176°F (80°C), the lubrication section gives minimum pressures of 10 psi (70 kPa) at idle and 50 psi (350 kPa) at 3,000 rpm. The test distinguishes a pressure-switch fault from a lubrication problem that calls for oil-pump inspection.