PORSCHE 928 GTS Model 1993-2 Wiring Diagram

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🏷️ Basic Information Identification Make: Porsche Model: 928 GTS Model Year Covered: 1993-1993 Product Type: Wiring Diagram Manual Codes Chassis Code: 928 👋 Introduction Market Position Positioning: Premium Grand Tourer,...

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标签: 1993 928 928 GTS Car Cars Porsche

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Description

🏷️ Basic Information

Identification

Make:

Porsche

Model:

928 GTS

Model Year Covered:

1993-1993

Product Type:

Wiring Diagram Manual

Codes

Chassis Code:

👋 Introduction

Market Position

Positioning:

Premium Grand Tourer, direct competitor to Aston Martin, Ferrari, and high-end Mercedes-Benz models of its era.

Competitive Analysis

Key Competitors:

Ferrari 412, Aston Martin V8 Vantage, Mercedes-Benz SEC models

Key Features

Dvantage:

Front-engine, rear-drive V8 configuration with advanced technology for its time, robust build quality, and unique design.

Design Philosophy:

Comfortable, powerful, and capable of high-speed touring, blending sports car performance with GT luxury.

📋 Manual Details

Coverage Areas

Primary Focus:

Electrical Systems

Diagnostic Scope:

Troubleshooting and Repair of Electrical Faults

Page Count

Estimated Pages:

150-250

Manual Type

Type:

Specialized Electrical Wiring Diagram Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Power Distribution:

Battery, Alternator, Fuses, Relays

Ignition System:

Ignition Module, Spark Plugs, Coils

Fuel System Electronics:

Fuel Pump, Injectors, Engine Control Unit (ECU) Signals

Lighting System:

Headlights, Taillights, Interior Lighting, Fog Lights

Instrumentation Gauges:

Speedometer, Tachometer, Fuel Gauge, Temperature Gauge, Warning Lights

Comfort Convenience:

Power Windows, Power Seats, Sunroof, Climate Control (HVAC), Central Locking, Cruise Control

Audio Entertainment:

Radio, Amplifier, Speaker Wiring

Safety Systems:

ABS (Anti-lock Braking System), Airbag System (if equipped)

Engine Management:

Sensors (e.g., Crankshaft Position, Camshaft Position, Knock), Actuators, ECU Wiring

Transmission Electronics:

Automatic Transmission Control Unit (if applicable)

Procedures Included

Component Identification:

Location and function of electrical components and connectors

Wiring Path Tracing:

Following wire harnesses from source to destination

Troubleshooting Charts:

Systematic approaches to diagnose electrical faults

Connector Pinouts:

Detailed diagrams of connector terminals and their functions

Fuse Relay Identification:

Location, rating, and function of fuses and relays

Ground Point Locations:

Identifying all chassis and component ground points

Technical Depth

Depth:

Comprehensive - suitable for professional technicians and knowledgeable DIYers

Diagnostic Level:

Advanced diagnostics, including voltage, resistance, and continuity testing

📊 Manual Specifications

File Format

File Type:

Searchability:

Text-searchable (OCR'd if originally scanned)

Print Quality

Resolution:

High resolution for clear diagrams and text

Binding Type

Binding:

N/A (Digital Format)

Paper Type

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Type:

V8, Naturally Aspirated

Engine Code:

M64.03

Displacement:

5.4 Liters (5327 cc)

Bore X Stroke:

97 mm x 92 mm

Compression Ratio:

10.4:1

Performance

Horsepower:

306 PS (302 bhp / 225 kW) @ 5200 rpm

Torque:

48.5 kg⋅m (476 N⋅m; 351 lb⋅ft) @ 4000 rpm

Fuel System

Injection:

Bosch LH-Jetronic 2.7 Fuel Injection

Fuel Type:

Premium Unleaded (91 Octane or higher)

Engine Management

ECU Type:

Motronic (specific variant for M64.03)

🔧 Transmission

Standard

Type:

5-Speed Manual Transaxle (G50/10)

Optional

Type:

4-Speed Automatic (Tiptronic - introduced late in the 928 lifecycle, primarily for earlier models but a possibility for later ones if specified)

Features

Transaxle Layout:

Rear-mounted transaxle for optimal weight distribution

Clutch Type:

Hydraulically actuated, single dry plate clutch (for manual)

📐 Dimensions

Exterior

Length:

4688 mm (184.6 in)

Width:

1890 mm (74.4 in)

Height:

1280 mm (50.4 in)

Wheelbase:

2500 mm (98.4 in)

Front Track:

1590 mm (62.6 in)

Rear Track:

1600 mm (63.0 in)

Weights

Curb Weight:

1710 kg (3770 lb)

Gross Vehicle Weight Rating:

2110 kg (4652 lb)

Towing Capacity:

N/A (Not Recommended)

Cargo

Cargo Volume:

Approx. 0.4 cubic meters (14 cubic feet) rear hatchback storage

Wheels Tires

Wheel Size Standard:

17 x 8J (front), 17 x 9J (rear) - "Cup” Design

Tire Size Standard:

225/45 ZR17 (front), 255/40 ZR17 (rear)

Bolt Pattern:

5 x 130 mm

Offset Front:

Offset Rear:

🛡️ Safety Features

Ratings

Certification:

Euro NCAP (Not applicable for this model year, but designed to high safety standards)

Active Features

Brakes Front:

Vented Discs, 322 mm diameter, 4-piston calipers (ABS equipped)

Brakes Rear:

Solid Discs, 299 mm diameter, 2-piston calipers (ABS equipped)

Bosch ABS III

Traction Control:

ASR (Anti-Slip Regulation) - standard on GTS

Passive Features

Airbags:

Driver and passenger airbags (standard on GTS)

Seatbelts:

3-point inertia reel seatbelts with pretensioners

Chassis Structure:

Integrated safety cage, crumple zones

Headlights:

High-intensity discharge (HID) Xenon headlights (optional, but common on GTS)

💡 Technology Features

Infotainment

Audio System:

Porsche CR-210 or CR-110 radio with cassette player (optional CD changer available).

Driver Assistance

Cruise Control:

Standard electronic cruise control system.

Climate Control:

Automatic climate control with recirculate function and A/C.

Connectivity

Telematics:

No integrated telematics or Bluetooth connectivity (era appropriate).

Convenience

Seats:

Power adjustable front seats with memory function (driver side).

Mirrors:

Electrically adjustable and heated exterior mirrors.

Windows:

Power windows, power sunroof.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 10,000 km (6,000 miles) or 12 months, whichever comes first.

Major Service Interval:

Every 40,000 km (24,000 miles) or 24 months, includes timing belt replacement (critical).

Fluid Specifications

Engine Oil:

SAE 5W-40 or 0W-40 Synthetic (API SJ/CF or higher). Capacity: 8.5 Liters (9.0 US Quarts) with filter.

Coolant:

Porsche approved G48 ethylene glycol coolant mixture (50/50 with distilled water). Capacity: Approx. 12 Liters.

Brake Fluid:

DOT 4 (or DOT 4 PLUS) synthetic brake fluid.

Transmission Fluid Manual:

Porsche spec gear oil for G50 transaxle (e.g., SAE 75W-90 GL-5). Capacity: Approx. 2.2 Liters.

Transmission Fluid Automatic:

ATF Dexron III or equivalent. Capacity: Approx. 3.5 Liters (dry fill).

Power Steering Fluid:

Pentosin CHF 11S or equivalent synthetic hydraulic fluid.

Differential Fluid:

SAE 75W-90 GL-5.

Known Issues

Electrical:

Failing headlight motor relays, door lock actuator issues, intermittent gauge problems, aging wiring harness insulation.

Mechanical:

Timing belt replacement criticality, coolant pipe leaks, rear main seal leaks, clutch wear, driveshaft CV joint wear.

Cooling System:

Plastic coolant pipe failures, radiator leaks, expansion tank issues.

Filter Part Numbers

Oil Filter:

Mann-Filter W 940/4, Bosch 3422, Mahle OX 36D

Air Filter:

Mann-Filter C 37 113/1, Bosch 1457429740

Cabin Filter:

Not applicable for this generation of 928.

Tune Up Specifications

Spark Plugs:

Bosch WQR 3 DU, NGK BCP7ES (or equivalent specified by Porsche, check manual for exact type)

Idle Speed:

Approx. 800-850 RPM (engine dependent, consult specific manual)

📚 Vehicle History

Brand Heritage

Manufacturer:

Porsche AG, Stuttgart, Germany

Model Evolution

Introduction Year:

1978 (as 928)

Gts Introduction Year:

Gts Significance:

The final and most powerful iteration of the 928, featuring the largest engine and updated styling.

Production

Production Years:

1978-1995 (Total 928 Production)

Gts Production Years:

1992-1995

Gts Units Produced:

Approx. 1,400 units globally

Manufacturing Location:

Stuttgart-Zuffenhausen, Germany

🏆 Awards & Recognition

Recognitions

Automotive Journalism:

Consistently praised for its handling, V8 power, and GT capabilities by automotive publications of its era. Often cited as a benchmark for performance GTs.