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🔌 Wiring Diagrams Mercedez Benz S Class 1991 Download Free PDF

Wiring Diagrams Mercedez Benz S Class 1991 – Timing Bands and Distribution
Do the FREE DOWNLOAD of the Wiring Diagrams of the Mercedez Benz S Class 1991 and opt for complete information on the entire electrical system that this car model has, if you are dedicated to car repair or simply want to repair your car on your own.

This information that you are about to obtain will help you solve any electrical problem that your car has since it includes everything related to the electrical system of the entire car and you will be able to have access to this information completely free of charge.

These Electrical Diagrams Manuals They are the complements of the Car Repair Manuals and Car Parts Catalogs which you can also download on our website. We hope that each and every one of them will be useful to you.

Table of Contents

Wiring Diagrams Mercedez Benz S Class 1991

Wiring Diagrams Mercedez Benz S Class 1991
Wiring Diagrams Mercedez Benz S Class 1991

Did you know that one of the important systems of a car is the electric system, this system is the responsible for initiating the movement of cars, the moment you turn the key or simply press the start button is when the car's engine starts to operate.

Below we will provide all the content included in these user manuals. electrical system: Fuse Diagram Mercedez Benz S Class 1991, In order to resolve any electrical failure that this car is experiencing, you will need the electrical diagrams, as well as knowing the fault codes displayed on the dashboard or in the car's scanner system.

Electrical Diagram of the AIRBAG SRS Air Bags Mercedez Benz S Class 1991

Air Bag Wiring Diagram Mercedez Benz S Class 1991
Air Bag Wiring Diagram Mercedez Benz S Class 1991

air bags They work by inflating as soon as the vehicle slows down drastically as a result of an impact. They then begin to deflate as soon as the driver or passenger's head makes contact with them.

All this is possible thanks to a range of pressure sensors and mechanisms. Additionally, the airbags include an accelerometer that detects changes in speed. That is why, if it detects a deceleration above the preset, the airbag circuit activates.

Airbag Wiring Diagram Mercedez Benz S Class 1991
Airbag Wiring Diagram Mercedez Benz S Class 1991

When this circuit starts working, an electric current passes through an element heater responsible for inflating the air bag, which is usually packed in a space behind the steering wheel or passenger side dashboard.

Therefore, it is important that the airbags as a whole are working correctly. If an Airbag error warning light is marked on the dashboard, you should immediately inspect and diagnose what is wrong.

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These electrical diagram manuals They include the entire airbag system of the 1991 Mercedez Benz S Class and you can consult the following information:

  • Airbag SRS Airbag Fault Codes
  • Electrical Diagrams of the entire Airbag SRS Airbag System
  • Location of all Air Bag components (Impact Sensors, Inflation Devices, Activators, Pyrotechnic Tensioner, etc.)
  • Terminals table of the central system.

Key and Remote Control Programming Mercedez Benz S Class 1991

Program Car Key Mercedez Benz 146 1991
Program Car Key Mercedez Benz 146 1991

Part of electrical system of the Mercedez Benz S Class 1991 It is the programming of the key and opening control, if for some reason your key is deactivated or does not work correctly, these manuals also include the procedure that you must perform to correctly configure the key and ignition control of the car.

Wiring Diagram Air Conditioning Mercedez Benz S Class 1991

The air conditioning of the Mercedez Benz S Class 1991 is a system that is responsible for cool, purify and filter the air inside the vehicle. Knowing its parts and how it works is essential for the mechanical professional, who must ensure that this mechanism regulates the internal temperature of the vehicle, controls humidity and filters the air from polluting agents effectively.

Mercedez Benz Auto Air Conditioning Diagram
Mercedez Benz Auto Air Conditioning Diagram

In this compendium of manuals of electrical diagrams You will also have the opportunity to solve any failure that the air conditioning system is experiencing since it has very important data and information to help you. achieve its proper functioning, Some of the topics that you can consult are:

  • Technical Data of the Air Conditioning of the Mercedez Benz S Class 1991
  • Technical Tips.
  • Defects or Faults detected
  • Component Location Diagram
Wiring Diagram Air Conditioning Mercedez Benz 146 1991
Wiring Diagram Air Conditioning Mercedez Benz 146 1991

Electric Glass System

You will also be able to see how the electric glass system of the 1991 Mercedez Benz S Class is constituted, which includes information on the complete harness for its operation as well as the disassembly and assembly processes.

OBDII DTC Fault Codes Mercedez Benz S Class 1991

OBD2 Fault Codes Mercedez Benz 146 1991
OBD2 Fault Codes Mercedez Benz 146 1991

The acronym DTC is an acronym for the word ““Diagnostic Trouble Code” or "diagnostic trouble codes" in Spanish. This, in turn, refers to a series of alphanumeric characters together that form the so-called code, capable of warning and diagnosing any fault that the car could be suffering from and that is inside or in the vicinity of the engine.

OBD2 or DTC codes are usually necessary when, inside the car that has the fault, one of the lights on the dashboard comes on, thus indicating that the engine has failed. This light, it is worth mentioning, is known as check engine and the problems that it can bring for the motor vehicle are so great that it is necessary to have this car code system.

With these manuals you will be able to know all the error codes that the Mercedez Benz S Class 1991 is presenting and indicate the possible failure that is occurring and the solution that you must apply to solve the failure. This section of the electrical diagram manuals can help you with the following:

  • Electronic injection 
  • ABS brakes and stability control 
  • Air-Bag / SRS 
  • Immobilizer 
  • Air Conditioning
  • Body / Comfort 
  • Electric steering
  • Dashboard
  • Automatic Transmissions 
  • Description of the codes presented by the scanner, such as: unknown and Unrecognized

Distribution Band and Timing Band of Mercedez Benz S Class 1991

Band and Timing Belt - Put on Time Mercedez Benz 146 1991
Band and Timing Belt – Put on Time Mercedez Benz 146 1991

One of the components that suffers the most punishment in a car is, without a doubt, the distribution bands or time bands. From when we start the engine in the morning and during the traffic we face to get to work. Many times we underestimate the band work. These put into operation many elements of great importance in our car. Without them, operation will not only be risky, but will also last a short time.

The bands are responsible for your car having spark in the spark plugs. When the engine turns, crankshaft pulley makes it spin alternator pulley, which in turn recharges the battery constantly. In case of band breakage, the current will not recharge the battery, so the operation will depend on the duration it may have. If the battery indicator on the dashboard suddenly comes on, it is because the alternator is not sending power and perhaps a belt has broken or come loose.

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Band Operation

Timing Band Mercedez Benz 146 1991
Timing Band Mercedez Benz 146 1991

If you have hydraulic steering, The risers simplify turning the steering wheel. The band also activates the pump that sends the power steering fluid. If this does not happen, the mechanism will not have the lubrication it requires to smooth the rotation of the steering wheel. If the belt bursts and the steering fluid is not distributed to the turning mechanism, the steering wheel “will become hard” as they commonly say.

One way to notice that the steering is failing is because the steering wheel becomes so hard that it can be painful to turn or because the warning light on the dashboard comes on. There could be many factors, but one of them is that the band has broken or come loose.

Time Band Synchronization Mercedez Benz 146 1991
Time Band Synchronization Mercedez Benz 146 1991

The air conditioning, although it is not essential for the car, it will also stop working, since its engine is activated by the band. The way you can tell is because you are too hot or too cold in your car.

Therefore, it is important to review or supervise the operation of the belts, with these electrical diagram manuals you will be able to know how change the timing belt and time the engine of the 1991 Mercedez Benz S Class, are included diagrams of all time bands or belts and how you should place them to put the car on time.

What else will I be able to consult with these Electrical Diagram Manuals?

With these Electrical Diagrams Manuals In addition to what we already told you so that they can be useful to you, here we inform you in a general way of all the simplified information of the data that you can consult:

Specific Information Tables for the 1991 Mercedez Benz S Class

  • engine compression
  • Engine Torque
  • Engine oil pressure
  • Injector nozzle flow
  • vacuum manifold
  • Air conditioner
  • Application of engine and transmission oil (mechanical and automatic)
  • Step-by-step electronic injection diagnosis

Location of Components with Illustrative Photos

  • Electronic Centers
  • Relays
  • Fuse box
  • Diagnostic connectors
  • inertia switch
  • Air conditioning filter (anti pollen)

Schemes and Wiring Diagrams of Mercedez Benz S Class 1991

Diagrams and Schemes of Poly-V or Micro-V Bands

  • Diagrams of poly-v or micro-v belts

Procedures for mounting and dismounting timing belts timing currents all explained with diagrams, you can also consult, Tips Causes of Failures and Solutions of Thousands of defects resolved in workshops, with all the information and illustrated with photos.

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