🏷️ Basic Information

Make:

BMW

Model:

3 Series Convertible

Model Code:

E36

Variant Specific Model 1:

318is Convertible

Variant Specific Model 2:

328i Convertible

Year:

1997

Manual Product Name:

BMW 318is c 328i c Electrical Troubleshooting Manual 1997 ETM

Manual Type Code:

ETM (Electrical Troubleshooting Manual)

👋 Introduction

Segment:

Compact Executive Sports Convertible

Target Audience:

Enthusiasts and owners of the 1997 BMW 3 Series Convertible (E36) seeking to diagnose and repair electrical issues.

Competitors:

Mercedes-Benz E-Class Convertible (e.g., W124/A124), Audi 80/90 Cabriolet, Lexus SC Convertible (though often larger).

Value Proposition:

Provides essential, detailed electrical schematics and troubleshooting guidance specific to the 1997 E36 Convertible, bridging the gap for owners needing specialized technical information.

Manual Benefit:

Empowers owners and mechanics to accurately diagnose and resolve complex electrical faults, reducing reliance on potentially costly dealership services.

📋 Manual Details

Primary Coverage:

Electrical systems and troubleshooting for 1997 BMW 3 Series Convertibles (E36 chassis) equipped with the 318is and 328i powertrains.

Secondary Coverage:

Wiring diagrams, component locations, diagnostic procedures, fuse and relay information, troubleshooting charts, and component testing.

Estimated Page Count:

Variable (Digital ETMs often span hundreds of pages, specific count not provided but comprehensive).

Type:

Electrical Troubleshooting Manual (ETM)

Language:

English

Format:

PDF (Downloadable)

📖 Manual Coverage

Powertrain Management:

Engine control systems (DME), fuel injection, ignition system, emissions control.

Chassis Electrical:

Lighting (headlights, taillights, interior), horn, wipers, washers, power windows, power mirrors, central locking, seat adjustments, power antenna.

Comfort Systems:

Climate control (HVAC), heated seats, convertible top operation (power top system), cruise control.

Safety Systems:

Anti-lock Braking System (ABS), supplemental restraint system (SRS/Airbags), seat belt pretensioners.

Audio Visual:

Factory radio/stereo system, amplifier (if applicable), speaker wiring.

Instrumentation:

Instrument cluster (speedometer, tachometer, fuel gauge, temperature gauge), warning lights, onboard computer (if equipped).

Troubleshooting Methodology:

Systematic diagnostic approach, symptom-based troubleshooting trees, fault code interpretation (if applicable).

Wiring Diagrams:

Complete, detailed, and color-coded wiring schematics for all electrical circuits.

Component Identification:

Locator diagrams for electrical components, connectors, and grounds.

Testing Procedures:

Step-by-step instructions for testing relays, switches, sensors, actuators, and wiring continuity.

Fuse Relay Identification:

Detailed charts and diagrams specifying fuse box locations, fuse ratings, and relay functions.

Connector Pinouts:

Detailed diagrams showing pin configurations for various electrical connectors.

Depth:

Comprehensive diagnostic and repair information for all electrical systems, suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

Format:

PDF

Searchability:

Likely text-searchable, allowing for quick access to specific topics.

Quality:

Designed for clear on-screen viewing, printable for workshop use. Assumed high resolution for schematics.

Type:

N/A (Digital Download)

Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

M44B19

Configuration:

Inline 4-cylinder

Displacement:

1.9 Liters (1895 cc)

Bore X Stroke:

85.0 mm x 83.5 mm

Compression Ratio:

10.0:1

Fuel Delivery:

Bosch Motronic M5.2 Fuel Injection

Performance Hp:

138 hp @ 6000 rpm

Performance Torque:

130 lb-ft @ 4300 rpm

Ignition System:

Distributorless Ignition System (DIS) with Coil-on-Plug

Engine Code:

M52B28

Configuration:

Inline 6-cylinder

Displacement:

2.8 Liters (2793 cc)

Bore X Stroke:

84.0 mm x 87.0 mm

Compression Ratio:

10.2:1

Fuel Delivery:

Bosch Motronic M5.2 Fuel Injection

Performance Hp:

190 hp @ 5500 rpm

Performance Torque:

206 lb-ft @ 3950 rpm

Ignition System:

Distributorless Ignition System (DIS) with Coil-on-Plug

Fuel Type:

Unleaded Gasoline (Premium recommended)

Fuel Pump Type:

In-tank electric fuel pump

🔧 Transmission

Type:

5-speed Manual (Getrag 260/5)

Type:

4-speed Automatic (ZF 4HP-22 EH)

Type:

5-speed Manual (Getrag 260/5)

Type:

4-speed Automatic (ZF 4HP-22 EH)

Differential Type:

Limited Slip Differential (LSD) often optional, especially on 328i.

Manual Transmission Fluid:

BMW MTF-LT-2 or equivalent (e.g., Pentosin MTF 2).

Automatic Transmission Fluid:

ZF LifeguardFluid 5 or equivalent ATF.

📐 Dimensions

Length:

174.5 inches (4432 mm)

Width:

67.3 inches (1710 mm)

Height:

53.2 inches (1351 mm)

Wheelbase:

106.3 inches (2700 mm)

Curb Weight 318Is:

Approximately 3100-3200 lbs (1406-1451 kg), depending on options.

Curb Weight 328I:

Approximately 3300-3450 lbs (1497-1565 kg), depending on options.

Trunk Volume:

Approximately 11.2 cubic feet (317 liters).

Standard Tire Size 318Is:

205/60R15

Standard Tire Size 328I:

225/50R16

Bolt Pattern:

5x120 mm

Center Bore:

72.5 mm

🛡️ Safety Features

NHTSA Front Impact:

Good (for Sedans/Coupes of the era, Convertible ratings may vary).

IIHS Side Impact:

Acceptable (for Sedans/Coupes of the era).

ABS:

Standard (Bosch 2S ABS system).

Traction Control:

Optional (ASC+T - Automatic Stability Control and Traction).

Airbags:

Driver and front passenger airbags (SRS).

Rollover Protection:

Reinforced A-pillars and windshield frame; optional pop-up roll bars (introduced later in E36 convertible production, not standard on all 1997 models).

Seatbelts:

Three-point seatbelts with pretensioners.

💡 Technology Features

Head Unit:

Factory BMW Business CD or Professional CD radios. Often support CD changers.

Speakers:

Typically 6-8 speakers, with options for upgraded Hi-Fi systems with amplifiers.

Cruise Control:

Available as an option.

Diagnostics:

OBD-I diagnostic port (pre-1996 models often) or early OBD-II (1996+ models use BMW's proprietary 16-pin connector which is OBD-II compliant for basic codes).

🔧 Maintenance

Oil Change Interval:

Typically every 7,500-10,000 miles or 12-18 months, following BMW's Condition Based Service (CBS) or recommended intervals.

Air Filter Replacement:

Check every 15,000 miles, replace as needed (often longer for E36).

Coolant Replacement:

Initial: 4 years/50,000 miles. Subsequent: 2 years/25,000 miles.

Spark Plug Replacement M44:

Approx. 60,000 miles (check manual for specific plug type and interval).

Spark Plug Replacement M52:

Approx. 100,000 miles (if using Long Life spark plugs, e.g., iridium).

Engine Oil Specification:

API SH or higher, ACEA A2-96 or A3-98. BMW Longlife-98 specification. Viscosity: 5W-30, 5W-40, or 10W-40 depending on ambient temperature.

Coolant Type:

BMW Blue Coolant (G48 ethylene glycol based) mixed 50/50 with distilled water.

Cooling System:

Plastic coolant expansion tank, water pump, thermostat, and radiator are known failure points due to age and material degradation.

Electrical Connectors:

Degradation of wiring insulation and corroded connectors, particularly in the engine bay and around the convertible top mechanism.

Convertible Top Motors:

Hydraulic cylinders for the power top can leak, and electric motors can fail.

Vanos System M52:

Variable Valve Timing (VANOS) unit on M52 engines can develop rattle or fail, impacting performance and fuel economy.

Oil Pan Gasket:

Common oil leak source, particularly the rear main seal and oil pan gasket.

ABS Wheel Speed Sensors:

Front and rear ABS wheel speed sensors are prone to failure, triggering ABS and/or traction control warning lights.

Instrument Cluster Pixels:

The LCD displays in the instrument cluster can fail (pixelation), affecting readability of odometer and OBC functions.

📚 Vehicle History

Bmw Philosophy:

Known for 'The Ultimate Driving Machine,' emphasizing performance, handling, and driver engagement.

E36 Generation:

The E36 generation (1991-1999 for sedans/coupes, 1994-1999 for convertibles) succeeded the E30 and was known for a more refined chassis, improved interior, and advanced technology for its time.

Convertible Introduction:

The E36 convertible was introduced in 1994, offering a stylish and sporty open-top experience.

Production Years E36 Convertible:

1994-1999

Manufacturing Location:

Germany (various BMW plants)

🏆 Awards & Recognition

Car And Driver 10Best:

The E36 3 Series (coupe/sedan) was a frequent entrant on Car and Driver's 10Best list during its production run, recognized for its exceptional driving dynamics.

Popular Mechanics Car Of The Year:

While not specific to the convertible, the E36 chassis received accolades for its engineering and performance.