ME-SFI gasoline injection system - Testing electrical system

AD07.61-P-6000A

ME-SFI gasoline injection system - Testing electrical system

25.11.2019

Engine

112.910/920/923/943, 112.911/921/940/941/942 up to 5/31/00

 Danger

Risk of death. Death may occur if body parts are drawn into rotating vehicle parts.

Do not insert your hand into rotating parts. Wear closed and snug-fitting work clothes. Secure area of rotating vehicle components against unauthorized access.

AS00.00-Z-0004-01A

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

Topical note

Notes on avoiding damage to ignition system

AH15.10-P-0002-01D

Check

Connecting and using test equipment

AD00.00-P-1000AZ

Gasoline injection and ignition system (ME-SFI) - Diagnosis - Previous knowledge

AD07.61-P-2000A

ME-SFI fuel injection and ignition system (ME), DTC memory

Fault codes from P0000 to P0299

AD07.61-P-4000A

Fault codes from P0300 to P0699

AD07.61-P-4000AA

Fault codes from P0700 to P1747

AD07.61-P-4000AB



When removing the couplings at the ME-SFI [ME] control unit, first remove the center coupling; during attachment, the center coupling D is the last to be attached.



Note on measuring equipment/test connection column: The numbers entered in brackets, e.g. in  1.0 (2A) mean: A = coupling A in wiring diagram 2 = socket 2 in wiring diagram



Ignition: OFF



Connect test wiring harness with socket box to ME-SFI [ME] control unit (N3/10) according to connection scheme. Plug with red identification is currently not yet required, as still no function available in ME-SFI [ME] control unit.

1

ME-SFI [ME] gasoline injection system electrics check ME-SFI [ME] control unit circuit 30

AD07.61-P-6000-01A

2

ME-SFI [ME] gasoline injection system electrics check ME-SFI [ME] control unit circuit 87

AD07.61-P-6000-02A

3

AD07.61-P-6000-03A

4

ME-SFI [ME] gasoline injection system electrics check hot film MAF sensor

AD07.61-P-6000-04A

5

Intake air temperature sensor electrical test, fuel injection system, ME-SFI

AD07.61-P-6000-05A

6

ME-SFI [ME] gasoline injection system electrics check pressure sensor



AD07.61-P-6000-06A

7

ME-SFI [ME] gasoline injection system electrics check fuel pump relay

AD07.61-P-6000-07A

8

Coolant temperature sensor electrical test, fuel injection system, ME-SFI

AD07.61-P-6000-08A

9

ME-SFI [ME] gasoline injection system electrics check ME-SFI [ME] control unit rpm signal

AD07.61-P-6000-09A

10

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor signal LH upstream of catalytic converter

AD07.61-P-6000-10A

11

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor signal RH upstream of catalytic converter

AD07.61-P-6000-11A

12

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor heater LH upstream of catalytic converter

AD07.61-P-6000-12A

13

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor heater RH upstream of catalytic converter

AD07.61-P-6000-13A

14

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor signal LH downstream of catalytic converter

AD07.61-P-6000-14A

15

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor signal RH downstream of catalytic converter

 with CODE (925) low-emission EURO3

AD07.61-P-6000-15A

16

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor heater LH downstream of catalytic converter

 with CODE (925) low-emission EURO3

AD07.61-P-6000-16A

17

O2ME-SFI [ME] gasoline injection system electrics check lambda sensor heater RH downstream of catalytic converter

 with CODE (925) low-emission EURO3

AD07.61-P-6000-17A

18

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/1)

 with CODE (925) low-emission EURO3

AD07.61-P-6000-18A

19

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/2)

AD07.61-P-6000-19A

20

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/3)

AD07.61-P-6000-20A

21

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/4)

AD07.61-P-6000-21A

22

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/5)

AD07.61-P-6000-22A

23

ME-SFI [ME] gasoline injection system electrics check injection valve (Y62/6)

AD07.61-P-6000-23A

24

ME-SFI [ME] gasoline injection system electrics check secondary air injection relay

 with CODE (925) low-emission EURO3

AD07.61-P-6000-24A

25

ME-SFI [ME] gasoline injection system electrics check air pump switchover valve

 with CODE (925) low-emission EURO3

AD07.61-P-6000-25A

26

ME-SFI [ME] gasoline injection system electrics check secondary air injection

 with CODE (925) low-emission EURO3

AD07.61-P-6000-26A

27

ME-SFI [ME] gasoline injection system electrics check EGR pressure transducer

AD07.61-P-6000-27A

28

ME-SFI [ME] gasoline injection system electrics check resonance intake manifold switchover valve

AD07.61-P-6000-28A

29

ME-SFI [ME] gasoline injection system electrics check purge control valve actuation

AD07.61-P-6000-29A

30

ME-SFI [ME] gasoline injection system electrics check purge control valve vacuum control

AD07.61-P-6000-30A

31

ME-SFI [ME] gasoline injection system electrics check purge system



AD07.61-P-6000-31A

32

ME-SFI [ME] gasoline injection system electrics check activated charcoal canister shutoff valve



AD07.61-P-6000-32A

33

ME-SFI [ME] gasoline injection system electrics check tank pressure sensor



AD07.61-P-6000-33A

34

ME-SFI [ME] gasoline injection system electrics check oil sensor

AD07.61-P-6000-35A

35

ME-SFI [ME] gasoline injection system electrics check oil sensor

AD07.61-P-6000-35A

36

ME-SFI [ME] gasoline injection system electrics check suction fan control unit

AD07.61-P-6000-36A

37

ME-SFI [ME] gasoline injection system electrics check diagnostics line

AD07.61-P-6000-37A

38

ME-SFI [ME] electrics check crash signal

As of 06/98

AD07.61-P-6000-56A