This Tool is a frequency sweeper with 5V square wave output (Duty cycle 50%, effective frequency range from

over 10kHz (max 50kHz) to 50Hz). This tool can be also considered as a MCU version of the software TMS-374

Decoder ECU. The only difference between the two tools is that the MCU version works without a PC. A small

MCU is used to generate the pulses instead of the PC RS232 Tx line. TMS374 ECU DECODER
A handy tool to have that will decode an all the above ecu's to a new state without the need of a laptop!
 
Introduction:
This Tool is a frequency sweeper with 5V square wave output (Duty cycle 50%, effective frequency range from

over 10kHz (max 50kHz) to 50Hz). This tool can be also considered as a MCU version of the software TMS-374

Decoder ECU. The only difference between the two tools is that the MCU version works without a PC. A small

MCU is used to generate the pulses instead of the PC RS232 Tx line.
The TMS 374 software is in fact a simple frequency sweeper with an effective range from about 2000Hz to about

100Hz. The Tiny sweeper does exactly the same but much more better (bigger range). After powering the device

on - the LED should blink twice. Pressing the button will start the sweep procedure. LED ON - means there are

pulses on the output. After reaching the lowest frequency the LED goes off and the mcu stops the generation.
 
Connection diagram:
+ : 12v DC
- : GND
S : signal wire
 
Manual:
After powering the device on - the LED should blink twice. The sweeping process starts as power is supplied to

the device. LED ON - means there are pulses on the output. After reaching the lowest frequency the LED goes off

and the mcu stops the generation.
 
* Connect the GND line to any suitable GND on the ECU via the small grabber.
* Connect the Data line to the Reset pin on the EPROM via the small grabber.
* Power the ECU and then the sweeper, the sweeper will flash twice on power up.
* Press the button and the device will start sweeping, once the LED turns off your done.
* Cut the immo data line on the ECU before re-fitting back to car.
 
TMS-374 Decoder ECU info
The sweeper should work with the following ECUs:
 
·Renault SIEMENS Fenix 3 and 5
·Renault Megane 1400cc 8v
·Renault Megane 1600cc 8v
·Renault Megane 2000cc 8v
·Renault Megane 2000cc 16V
·Renault Megane Scenic 1400cc 8v
·Renault Megane Scenic 1600cc 8v
·Renault Megane Scenic 2000cc 8v
·Renault Sefrane 2000cc 16V
·Renault Laguna 2000cc 8v
·Renault Laguna 2000cc 16v
·Renault Espace 2000cc 8v
 
·Renault SAGEM SAFIR 1 and 2
·Renault Clio 1200cc 8V
·Renault Clio 1400cc 8V
·Renault Clio 1600cc 8V
·Renault Clio 2000cc 16V Williams
·Renault Laguna 1800cc 8V
·Renault Laguna 2000cc 8V
·Renault Laguna 1800cc 16V
·Renault Laguna 2000cc 16V
·Renault Twingo 1200cc 8V
 
NOTE: If reset pin is connected to ground then it must be lifted or the track cut before decoding. This can be re-

attached after decoding the ecu. As a rule of thumb keep the power connected to the ECU for a futher five

minutes after the decoder has completed the decoding process.
 
·Sagem SL96 Psa
·Peugeot 306 1400cc 8V
·Peugeot 306 1600cc 16V
·Peugeot 306 1800 16V
·Peugeot Ranch 1400 8V
·Citroen Berlingo 1400cc 8V
·Citroen Xrara 1400cc 8V
·Citroen Xrara 1800cc 16V
·
DAEWOO SIEMENS
·Daewoo Matiz 800cc
 
·HYUNDAI SIEMENS
·Hyundai Coupe 1600cc 16V
·Hyundai Coupe 2000cc 16V
 
·KIA SIEMENS
·Kia Rio 1300 16V
·Kia Rio 1500 16V
 
MAGNETI MARELLI
1·AP20, 1AP40, 1AP41, 1AP43, 1AP80, 1AP81, 1AP83 1AP90,
·Citroen Berlingo 1800cc 8V
·Citroen Saxo 1400cc 8V
·Citroen Saxo 1600cc 16V
·Citroen Xara 1400cc 8V
·Citroen Xara 1800cc 8V
·Citroen Xara 2000cc 16V
·Citroen ZX 1400cc 8V
·Peugeot 106 1400cc 8V
·Peugeot 106 1600cc 8V
·Peugeot 106 1600cc 16V
·Peugeot 206 1100cc 8V
·Peugeot 206 1400cc 8V
·Peugeot 306 1400cc 8V
·Peugeot 306 1600cc 8V
·Peugeot 306 1800cc 8V
·Peugeot 405 1800cc 8V
·Peugeot 406 1800cc 8V
·Peugeot Partner 1800 8V