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HANDBOOK

on SEQUENT 24

TA010976 - N. 1 - 17 - 11 - 2004

M.T.M. s.r.l.

Via La Morra, 1
12062 - Cherasco (Cn) - Italy
Tel. ++39 0172 48681
Fax ++39 0172 488237

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Summary of Contents for Sequent 24

Page 1: ...HANDBOOK on SEQUENT 24 TA010976 N 1 17 11 2004 M T M s r l Via La Morra 1 12062 Cherasco Cn Italy Tel 39 0172 48681 Fax 39 0172 488237 ...

Page 2: ...ATURE SENSOR 2 5 FUEL RAIL 2 6 BRC INJECTORS 2 7 GAS PRESSURE AND TEMPERATURE SENSOR 2 8 MAP SENSOR 2 9 HARNESS 2 9 1 INJECTORS CUT 3 PROGRAMMING 3 1 FILE TYPES 3 2 ASSISTED PERSONALISED PROCEDURE 4 TUNE UP 4 1 CHANGING OVER 4 2 SELF MAPPING 5 UTILITIES 5 1 INFORMATION 6 PROBLEMS AND SOLUTIONS 7 ANNEXES A LIST OF THE PINS AND THEIR FUNCTIONS B LOCATION OF THE ECU PINS C GENERAL ELECTRICAL DIAGRAM ...

Page 3: ...integrated on rail Twater integrated on the reducer MANIFOLD PRESSURE ONLY WHILE SELF MAPPING Injectors Cut Cut on the negative inside the ECU Emulation with the Modular LD Cut on the POSITIVE inside the ECU and simultaneous for the 4 injectors the orange wires do not enter the ECU Key contact and Petrol Injectors Positive To connect to the key contact positive brown and to the petrol injectors po...

Page 4: ...N ITS PETROL POSITION With the button of the changeover switch in its petrol position the vehicle works in forced petrol mode as in all the previous systems The rectangular red LED lit informs the user while the gas level infor mation disappears that is to say the four level green LEDs are off 2 2 2 CHANGEOVER SWITCH IN ITS GAS POSITION In this position the vehicle starts up on petrol the level LE...

Page 5: ...the powers for guidance 2 8 GAS PRESSURE AND TEMPERATURE SENSOR This sensor is absolutely new in a compact body and already integra ted with the connector it contains the P1 gas pressure and tempera ture sensor The sensor is directly fitted on the fuel rail In this position the measurement of gas pressure and temperature is more careful and allows rectifying the gas mixtu res more rapidly MAP SENS...

Page 6: ...th the petrol injectors It supplies tension on the injectors positive while running on petrol whereas it takes this power supply off while running on gas in order to cut injectors It is highly recommended to use right and left harnesses specifically conceived for Sequent 24 whene ver it is possible They actually allow making quick connections with the injectors without welding and cutting down any...

Page 7: ...T that s why you are kindly requested to refer to the attendant handbooks for a more detailed description Assisted personalised procedure The main novelties have been introduced in the equipment type screen and in the RPM calibration screen The equipment type screen Picture 8 pag 8 requires to enter an extra information the vehicle volume The RPM calibration screen Picture 9 pag 8 allows selecting...

Page 8: ... a rule the changing over is divi ded into two sections according as you change over with the warm vehicle temperature higher than 50 C or the cool vehicle tempera ture higher than 40 C In the referred example the chan ging over conditions are attained if 1 60 seconds at least have passed after the vehicle starting up and gas temperature ranges from 40 and 50 C 2 5 seconds at least have passed aft...

Page 9: ...l conditions and therefore at any RPM and engine load values The standard configurations are Petrol Gas changing over Box 1 of Pict 11 changing over in dece leration Gas Petrol changing over Box 2 of Pict 11 always changing over In the Changing back to petrol for lack of gas Box there are all the parameters controlling this function They are the same parameters already seen for the Standard Sequen...

Page 10: ...you are kindly requested to make refe rence to the handbooks on the Standard SEQUENT and SEQUENT FAST 5 1 INFORMATION This section allows controlling the updating of the software versions existing on the PC that can be downloaded on the ECU visuali sing the software name and version Picture 13 10 Pict 13 ...

Page 11: ...itch Verify the ECU operation The vehicle works wrongly on gas The injectors positives are not cut correc tly Make sure you have cut all the petrol injectors positives Verify you have cut as close as possible to the injectors The Petrol and GAS injectors do not inject simultaneously you will find it hard to make the self mapping The injectors positives are not cut correc tly Try to start the vehic...

Page 12: ...GAS Gas injector 4 piloting outlet B5 C5 Violet INJ4BENZ IN Petrol injector 4 piloting intlet C5 Note 2 Red SENSPOWER 5V power supply for sensors and changeover switch A6 A2 White Brown COMINJPET OUT Petrol injectors common positive injectors side B6 Yellow LAMBDA AIN Lambda oxygen sensor analog inlet C6 Light blue LAMBDA AOUT Lambda oxygen sensor analog outlet A7 A1 White Green COMINJPET IN Petro...

Page 13: ...lve and the back one never connect them together Never substitute the fuses with others of superior carrying capacity Battery Black Black Red Red LPG Solenoid Valve Water temperature sensor GENIUS SEQUENT 24 Reducer Petrol injectors sequence Gas inlet GAS injectors sequence Gas temperature sensor and gas pressure sensor 1st Petrol Inject 2nd Petrol Inject 3rd Petrol Inject 4th Petrol Inject Orange...

Page 14: ...r Gas 3rd Injector A6 B5 B4 B3 B2 PETROL ECU A5 White Green A4 A3 A2 White Green White Green White Green LPG Solenoid Valve SEQUENT 24 ECU External Relé on the wiring Sequent 24 Positive Petrol Injector C1 A7 White Green Grenn Black Ground 12V After Contact Europa Multivalve 1st Petrol Inject 2nd Petrol Inject 3rd Petrol Inject 4th Petrol Inject ANNEXES D Injectors cut diagram ...

Page 15: ...ction Sequent 24 Harness Sequent 24 1 Injector 2 Injector 3 Injector 4 Injector Negative Positive Violet Orange Violet Orange Violet Orange Violet Orange Inj 1 Petr Inj 1 Petr Inj 2 Petr Inj 2 Petr Inj 4 Petr Inj 4 Petr Inj 3 Petr Inj 3 Petr White Green White Brown SEQUENT 24 1 Injector 2 Injector 3 Injector 4 Injector ...

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