Renault Getrag DC4 EDC Transmission Bench Mode Programming

How Is Bench Read-Write Done on Renault Getrag DC4 (EDC Transmission)?

What is an EDC transmission?

The EDC transmission is a type of semi-automatic gearbox.

Developed by Renault, this semi-automatic system has six forward gears. With a dual-clutch layout, the first clutch handles 1st, 3rd and 5th; the second handles 2nd, 4th and 6th.

In manual cars a torque converter determines drive power. Semi-automatic and EDC transmissions have no torque converter; the gearbox selects gears based on engine output.

The transmission automatically chooses the right gear from road conditions, throttle and engine power, shifting with minimal jerk.

Gears mesh through synchronisers. Each gear sits on a splined shaft and is controlled by the processor. While one gear is engaged, the next waits in the upper clutch for smooth shifts.

"+" on the selector raises gear manually; "-" lowers it. As on other automatics, P is park, R is reverse and N is neutral.

EDC Transmission Chronic Problems and Fault Codes

If the instrument cluster shows "check gearbox" or a professional diagnostic tool reports one of the codes below, and the sensor is ruled out, you can try cloning the TCU easily with Flex.

• P0705 Transmission range sensor, PRNDL input – circuit malfunction
• P0706 Transmission range sensor – range/performance problem
• P0707 Transmission range sensor – low input
• P0708 Transmission range sensor – high input
• P0709 Transmission range sensor – intermittent circuit
• P0729 Gear 6 – incorrect ratio
• P072B Transmission system – stuck in reverse
• P072C Transmission system – stuck in 1st gear
• P072D Transmission system – stuck in 2nd gear
• P072E Transmission system – stuck in 3rd gear
• P072F Transmission system – stuck in 4th gear
• P0730 Incorrect gear ratio
• P0731 Gear 1 – incorrect ratio
• P0732 Gear 2 – incorrect ratio
• P0733 Gear 3 – incorrect ratio
• P0734 Gear 4 – incorrect ratio
• P0735 Gear 5 – incorrect ratio
• P0736 Reverse – incorrect ratio
• P073A Transmission system – stuck in 5th gear
• P073B Transmission system – stuck in 6th gear
• P073C Transmission system – stuck in 7th gear
• P073E Transmission system – unable to shift to 1st
• P074A Transmission system – unable to shift to 2nd

How is cloning performed?

FLEX is used for flash/EPROM read-write and TCU cloning on automatic transmission ECUs on vehicles built after 2003.

Especially on Renault, BMW, Mercedes, Volkswagen, Audi, Seat and Skoda EDC, DSG transmissions, TCU MANAGER writes raw software and reprograms transmission control units.

Heavy loads and constant stop-start city driving stress automatic transmission ECUs over time.

Flex transmission coding and cloning resolves these faults with professional reprogramming. With TCU Manager you can also program via OBD; optional DC4, DSG DQ200, DQ250 and DQ500 OBD cables are available from us.

DSG coding and programming is done with the Magicmotorsport Flex device.

When transmission ECUs fail, Magicmotorsport Flex offers fast solutions dedicated to transmission programming, including via OBD.

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