
 CAN-bus Cruisecontrol GC90Ci installation manual 
 
 
2 
 
Contents 
Contents...............................................................................................................................2 
1Purpose, construction and operation of the GC90Ci ...................................................3 
1.1 Purpose of the GC90Ci............................................................................................3 
1.2 Construction ...........................................................................................................3 
1.3 Operation................................................................................................................3 
2Safety directions ...........................................................................................................4 
3Installation and connections ........................................................................................6 
3.1 Installation electronic module (EM) .......................................................................6 
3.2 Wiring Diagram.......................................................................................................7 
3.3 T-harness connection .............................................................................................8 
3.4 Wiring harness connections ...................................................................................8 
4Set-up..........................................................................................................................10 
4.1 Introduction set-up...............................................................................................10 
4.2 Release procedure................................................................................................11 
4.3 The CG90Ci accelerator pedal set-up ...................................................................12 
4.4 The CG90Ci vehicle speed signal set-up ...............................................................13 
4.5 Testdrive ...............................................................................................................14 
4.6 Increase response time ........................................................................................15 
4.7 Reduce response time ..........................................................................................16 
4.8 Increase sensitivity ...............................................................................................17 
4.9 Reduce sensitivity .................................................................................................18 
5Diagnostics and trouble shoot....................................................................................19 
5.1 Diagnostics 1: CM, brake signal, clutch signal ......................................................19 
5.2 Diagnostics 2:Accelerator pedal control, vehicle speed signal ............................20 
5.3 Trouble shoot 1.....................................................................................................21 
5.4 Trouble shoot 2.....................................................................................................21 
5.5 Trouble shoot 3.....................................................................................................21 
6Frequently Asked Questions.......................................................................................22