AC STAG-4 QBOX BASIC User manual

AC S.A. all rights reserved. Under penalty of law and/or liability claims it is forbidden to copy, publish, distribute, make available and/or use in any way all or any part of information contained
within this document, in particular photographs, drawings, illustrations, trademarks, etc.
Controller User Manual
67R-01 4903
110R-00 4904
10R-03 6616
(information contained in this manual is also available
in the diagnostics software help system and at the www.ac.com.pl website)
ver. 1.7.9 2017-04-12

AC S.A. all rights reserved. Under penalty of law and/or liability claims it is forbidden to copy, publish, distribute, make available and/or use in any way all or any part of information contained
within this document, in particular photographs, drawings, illustrations, trademarks, etc
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Table of contents:
1. Controller installation............................................................................................................4
1.1. Layout diagram STAG-4 QBOX BASIC.............................................................................................................4
1.2. Layout diagram STAG-4 QBOX PLUS..............................................................................................................5
1.3. Layout STAG-4 QNEXT PLUS..........................................................................................................................6
1.4. Layout STAG-300 QMAX BASIC ......................................................................................................................7
1.5. Layout STAG-300 QMAX PLUS........................................................................................................................8
1.6. Wiring diagram for fuel level emulator FLE .......................................................................................................9
1.7. Wiring diagram for fuel pressure emulator FPE ..............................................................................................10
1.8. Semi-sequential control...................................................................................................................................19
1.9. Full-group control.............................................................................................................................................19
1.10. Mounting the controller STAG-4 QBOX/QNEXT and STAG-300 QMAX ......................................................19
1.11. Selection of pressure regulator......................................................................................................................20
1.12. Selection of injector nozzles..........................................................................................................................20
2. The AC STAG diagnostic program.....................................................................................20
2.1. Controller-computer connection ......................................................................................................................20
2.2. AC STAG version ............................................................................................................................................23
2.3. Main menu.......................................................................................................................................................23
2.4. Controller Parameters......................................................................................................................................25
2.5. Signals, ingectors. LED switchboard...............................................................................................................32
2.6. Auto-calibration................................................................................................................................................34
2.7. Oscilloscope ....................................................................................................................................................34
2.8. Errors...............................................................................................................................................................35
2.8.1. Errors of the gas controller .....................................................................................................................35
2.8.2. Gas controller message..........................................................................................................................37
2.8.3. Errors the ECU........................................................................................................................................38
2.9. Multiplier map ..................................................................................................................................................39
2.9.1. Multiplier matching..................................................................................................................................41
2.10. RPM correction map......................................................................................................................................43
2.11. Petrol portion map .........................................................................................................................................44
2.12. Gas temperature correction map...................................................................................................................45
2.13. Reducer temperature correction map............................................................................................................45
2.14. Gas pressure correction map ........................................................................................................................46
2.15. Petrol map „B”................................................................................................................................................46
2.16. Petrol map „G” ...............................................................................................................................................47
2.17. Map acquisition state.....................................................................................................................................47

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within this document, in particular photographs, drawings, illustrations, trademarks, etc
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2.18. Injection time deviation map..........................................................................................................................49
2.19. MAP correction map (autoadaptation map)...................................................................................................49
2.20. OBDII/EOBD reader ......................................................................................................................................50
2.21. Digital recorder ..............................................................................................................................................52
2.22. Assignment of gas injectors to banks............................................................................................................52
2.23. Autoadaptacion..............................................................................................................................................53
2.23.1. ISA3 mode ..............................................................................................................................................54
2.23.2. OBD mode ..............................................................................................................................................55
2.24. Controller update ...........................................................................................................................................56
2.25. Diagnostics and service.................................................................................................................................56
2.25.1. Diagnostics (test actuators) ....................................................................................................................56
2.25.2. Service....................................................................................................................................................57
3. STAG-4 QBOX/QNEXT/STAG-300 QMAX controller programming..................................57
3.1. Auto-calibration................................................................................................................................................57
3.2. Collection of the petrol injection map with petrol (petrol map).........................................................................58
3.3. Collection of the petrol injection map with LPG (LPG map) ............................................................................58
3.4. Checking if maps match, verification of deviations..........................................................................................58
3.5. Controller manual setting.................................................................................................................................58
3.6. LPG temperature correction ............................................................................................................................59
3.7. Intelligent gas level indicator............................................................................................................................59
4. LED switchboard operation and acoustic signals (User Manual)....................................61
4.1. LED-300 switchboard ......................................................................................................................................61
4.2. LED-300/401B and LED-401 switchboard.......................................................................................................62
4.3. Automatic calibration of LPG level indicator....................................................................................................62
4.4. Acoustic signals...............................................................................................................................................63
4.5. Emergency start on gas...................................................................................................................................63
5. Bluetooth communication interface...................................................................................63
6. Technical specifications......................................................................................................65
7. Warranty, restrictions, exclusions......................................................................................65

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1. Controller installation
To ensure proper and long-lasting operations of STAG Autogas systems in vehicles equipped
with START/STOP engine mode, high-durability gas valves are recommended to mount. The
proper valve shall be marked with additional "H3" symbols meaning 1,000,000 switching
operations endurance, according to paragraph 4.7 of Annex 3 of regulation no. 67, Revision 4.
1.1. Layout diagram STAG-4 QBOX BASIC
Fig. 1 STAG-4 QBOX BASIC controller installation layout diagram

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1.2. Layout diagram STAG-4 QBOX PLUS
Fig. 2 STAG-4 QBOX PLUS controller installation layout diagram.
Fig. 3 Wiring diagram for STAG-4 QBOX / QNEXT / QMAX PLUS connection to OBD interface.

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1.3. Layout STAG-4 QNEXT PLUS
Fig. 4 STAG-4 QNEXT PLUS controller installation layout diagram.

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within this document, in particular photographs, drawings, illustrations, trademarks, etc
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1.4. Layout STAG-300 QMAX BASIC
Fig. 5 STAG-300 QMAX PLUS controller installation layout diagram.

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1.5. Layout STAG-300 QMAX PLUS
Fig. 6 STAG-300 QMAX PLUS controller installation layout diagram.

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1.6. Wiring diagram for fuel level emulator FLE
Fig. 7 Wiring diagram for fuel level emulator FLE connection to STAG-4 QBOX PLUS.
Fig. 8 Wiring diagram for fuel level emulator FLE connection to STAG-4 QNEXT PLUS.

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Fig. 9 Wiring diagram for fuel level emulator FLE connection to STAG-300 QMAX PLUS.
1.7. Wiring diagram for fuel pressure emulator FPE
Fig. 10 Wiring diagram for fuel pressure emulator FPE connection to STAG-300 QMAX PLUS.