Reconditioning / replacing: Fuel system
Group 23: Fuel system
Control module, replacing 28421-2 NOTE: Before the control module is replaced and any warranty claim made, all checks in the check list should be performed, to exclude any defect in engine control system. If the measurements of the flat cables show defects, it is highly likely that the control module is OK. See ”Workshop Manual, EMS 2” WARNING! Faulty individual adjustments of the control module may result in damage to people or the engine. For information about reprogramming and reading of software see ”Workshop Manual, EMS 2” WARNING! Exchange of control modules between engines, for troubleshooting or repair, must never be performed under any circumstances. 1.
Clean thoroughly around the control module fuel connections.
2.
Remove electricity from the engine by disconnecting the negative battery terminal.
3.
Remove the lower part of the crankcase ventilation pipe.
6.
Remove upper and lower cable harnesses clamps.
7.
Remove the control module’s cable harness by moving the retaining clip gloves out.
8.
Remove upper and lower fuel connections with the cooling element, plug the fuel lines.
9.
Remove the screws that hold the control module and remove the control module.
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