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Introduction

This article deals with the following issues:

1. Using and replacing Jimny keys (the ones used to open the car's doors and start the engine);
2. Issues with and replacing the remote locking transmitter dongle / fob or installing aftermarket remote locking transmitters;
3. Issues with factory immobilizer (fitted to some vehicles);
4. Issues with factory or aftermarket alarm systems;

Key and remote locking transmitter

THIS CHAPTER NEEDS TO BE PROPERLY WRITTEN

For Jimnys 3, these forum discussions contain some useful info about replacing lost keys and remote locking transmitters:

• Discussion 1
• Discussion 2
• Discussion 3
• Discussion 4

Transmitter code registration procedure

The following procedure has been copied from this source. The copy remains here in case that the source disappears.

If transmitter or door lock controller is replaced with new one or additional transmitter(s) is necessary, register key code(s) as follows.

Jimnys with an M13 engine:

1. Confirm that the vehicle is the following conditions.
   • All doors are closed.
   • Ignition key is out of ignition switch.
   • Driver side door is unlocked and its window is opened.
2. Disconnect negative (–) cable from battery.
3. After 30 seconds, perform the following procedure within 60 seconds.
   1. Connect negative (–) cable to battery.
   2. Operate driver side door knob switch from lock to unlock twice.
   3. Push “LOCK” button on transmitter and confirm that all doors are operated from lock to unlock.
   4. Push driver side door knob switch to lock position.
   5. Push “LOCK” button on transmitter twice and confirm that all doors are operated from unlock to lock. With this, code registration is completed.

Two transmitter codes can be registered.

When a new transmitter code is registered, the oldest one will be cleared.

Jimnys with a K9K engine:

1. Make sure that all doors are closed and ignition key is out of ignition key cylinder.
2. Open driver side door.
3. Turn ignition switch to ON position, and then remove ignition key from ignition key cylinder within 10 seconds after that.
4. Push and release driver side door switch (1) at 3 times by hand with 20 seconds after removing ignition key from ignition key cylinder.
5. Turn ignition switch to ON position, and then remove ignition key from ignition key cylinder within 10 seconds after that.
6. Push “UNLOCK” button (2) on transmitter (3) and confirm that all doors are operated from lock to unlock.

with this, code registration is completed.

Three transmitter codes can be registered.

When a new transmitter code is registered, the oldest one will be cleared.

Immobilizer

THIS CHAPTER IS INCOMPLETE AS IT IS CURRENTLY STILL BEING WRITTEN

Introduction

In some markets an Immobiliser system to Jimnys 3 is fitted. Whilst the actions you can perform on this system are limited (for security reasons!), Suzuki provide access to the diagnostics so you can at least understand where any issue might be.

The immobiliser consists of 4 main parts of which 3 are "active" ie. contain a level of intelligence.

1. The key. This contains a small coded chip in the form of a tiny black rectangle. This is activated by a radio signal and does NOT require a battery. In keys with batteries these are for the remote lock/unlock facility and does not affect chip operation. However when changing the batteries (or renewing the key case) do not lose the chip!.

2. The Coil Antenna - this is the only passive part of the system. It is looped around the ignition key barrel and senses the chip in the key. It transmits a pulse to power the chip in the key and then passes the response to the Immobiliser unit.

3. Immobiliser unit. This reads the key code coming from the antenna and compares it with a list of up to 4 keys registered in its memory. It also talks to the ECU as well, exchanging its own internal secret code number and the ECUs secret number. Only if the key code, the immobiliser secret number and ECU secret number are all as stored in the memory will it let the ECU start the engine

4. ECU. This starts the engine but only when permitted by the immobiliser. It also checks the secret code received from the immobiliser and only proceeds if this code is matched to the one in its memory. If starting is not permitted then the ECU disables the injectors and the spark ignition.

In summary, the keys, the immobiliser and the ECU are all matched together and changing ANY one requires re-coding of the system. The re-coding can only be done using the Suzuki proprietary scan tool.

However, as stated, the diagnostic codes can be read on some Jimnys using the instructions below.

Immobilizer chip (indicated with the red arrow) in the original key with integrated remote locking transmitter, from a European Jimny 3 made in 2012.

Jimnys which can be read

Not all Jimny 3 immobilisers are capable of being read. The table below shows the information available (please update if you know more info)

Variant Identification	Airbag Fitted?	Immobiliser Light Fitted?	Manual Code read possible?	Alternate Read method
Early G13BB	Not relevant	No	YES	Suzuki Scan Tool
M13A	No	No	YES	Suzuki Scan Tool
M13A	Yes	No	NO	Suzuki Scan Tool

Preparing the read-out

ECU codes

Please refer to the ECU section on how to read codes from the ECU (NEED TO WRITE LINK)

Immobiliser codes

The read-out of the error codes from the immobiliser is achieved by plugging an analogue (with a needle) voltmeter in the immobiliser connector located behind the dashboard. It is on the drivers side (both for Right Hand Drive and Left Hand Drive) behind the steering wheel, on the side of the steering wheel nearest the door.

Therefore, on vehicles with the steering wheel on the proper side (RHD) it is behind the dashboard behind the drivers right hand when it is holding the steering wheel.

If you are in one of those Jimnys with the steering wheel on the wrong side (a legacy of being invaded by Napoleon), then it is behind the dashboard behind the drivers left hand when it is holding the steering wheel.

PICTURE OF CONNECTOR NEEDED

Reading the codes

To read the codes:

1. Plug meter into immobiliser socket
2. Switch on ignition.

The immobiliser will now flick the meter needle giving a code to tell you the fault.

The code is a two digit code so will flick the first digit (using LONG flicks), pause for 1 second and then flash the second digit (Using short flicks), then after a 3 second delay it will repeat.

The Immobiliser codes are:

Code	Meter needle	Reason
00	Three short	Normal
11	One Long, one short	Key not matched
31	Three long, one short	No keys stored
32	Three long, three short	Key not matched (airbag fitted)
12	One long, two short	Immobiliser fault
13	One long, 3 short	Coil antenna or key fault
21	Two long, one shore	ECU/Immobiliser code
22	Two long, two short	Ignition Switch
23	Two long, three short	Serial Data Link

The related ECU codes are:

Code	Reason
12	Normal
81	ECU/Immobiliser code not matched
84	ECU/Immobiliser code not stored
82	ECU Fault
83	Serial data link fault

Alarm

THIS CHAPTER NEEDS TO BE PROPERLY WRITTEN

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Page last edited on 9/01/2021 by user Bosanek