Fuel injection system (HFM-SFI), testing electrical system

AD07.51-P-6000B

Fuel injection system (HFM-SFI), testing electrical system

19.11.2019

Engine

104 in model 463

 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

Motor 104 mit Benzin-Einspritz- und Zündsystem HFM

AH15.10-P-0002-01D

Fuel injection and ignition system (HFM-SFI) diagnosis, advanced information

AD07.51-P-2000B

Tools for testing electrical system of HFM sequential multiport fuel injection/ignition system

AD07.51-P-2000-02B

Function check

Test procedure

Operation/requirement

Specified value

Possible cause/remedy

2

Control unit for HFM terminal 87 Testing of electrical components of gasoline injection system HFM

Circuit 87E

AD07.51-P-6000-02C

3

Control unit for HFM terminal 87 Testing of electrical components of gasoline injection system HFM

Circuit 87L

AD07.51-P-6000-02D

4

Hot film mass air flow sensor 5-pin Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-05B

5

Hot film mass air flow sensor 5-pin Testing of electrical components of gasoline injection system HFM

Check ground line

AD07.51-P-6000-05C

6

Fuel pumps relay Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-06B

7

Start signal of terminal 50 Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-07B

8

Coolant temperature sensor Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-09B

9

Intake air temperature sensor Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-10B

10

Control unit for HFM rpm signal Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-11B

11

CC actuator idle recognition Testing of electrical components of gasoline injection system HFM

Up to 03/95 (HHT diagnosis identifier 46)

AD07.51-P-6000-76A

12

Control of safety fuel shutoff Testing of electrical components of gasoline injection system HFM

Up to 03/95 (HHT diagnosis identifier 46)

AD07.51-P-6000-77A

Actuation of CC actuator

13

Control of safety fuel shutoff Testing of electrical components of gasoline injection system HFM

Up to 03/95 (HHT diagnosis identifier 46)

AD07.51-P-6000-77B

14

O2-Sensor signal Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-13B

15

O2-Sensor heater Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-14B

16

Fuel injection valve (Y62/1) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-18B

17

Fuel injection valve (Y62/2) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-19B

18

Fuel injection valve (Y62/3) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-20B

19

Fuel injection valve (Y62/4) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-21B

20

Fuel injection valve (Y62/5) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-78A

21

Fuel injection valve (Y62/6) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-79A

22

Coding plug HFM Testing of electrical components of gasoline injection system HFM

Up to 03/95 (HHT diagnosis identifier 46)

AD07.51-P-6000-22B

23

CO potentiometer Testing of electrical components of gasoline injection system HFM

Up to 03/95 (HHT diagnosis identifier 46)

AD07.51-P-6000-23B

24

Air pump switchover valve Testing of electrical components of gasoline injection system HFM

only     

AD07.51-P-6000-38B

25

Switchover valve purging Testing of electrical components of gasoline injection system HFM

Electrical actuation

AD07.51-P-6000-25C

26

Switchover valve purging Testing of electrical components of gasoline injection system HFM

Vacuum control

AD07.51-P-6000-25D

27

Solenoid camshaft timing Testing of electrical components of gasoline injection system HFM

Power consumption

AD07.51-P-6000-27C

28

Solenoid camshaft timing Testing of electrical components of gasoline injection system HFM

Mechanical function

AD07.51-P-6000-27D

29

Resonance intake manifold switchover valve (Y22/6) Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-80A

30

CAN data bus Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-41B

31

CAN element in the control unit HFM Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-42B

32

Switchover valve EGR Testing of electrical components of gasoline injection system HFM

Power consumption

AD07.51-P-6000-39C

33

Switchover valve EGR Testing of electrical components of gasoline injection system HFM

Vacuum control

AD07.51-P-6000-39D

34

Exhaust gas recirculation valve Testing of electrical components of gasoline injection system HFM

AD07.51-P-6000-40B

35

Thermocouple CAT Testing of electrical components of gasoline injection system HFM

only 

AD07.51-P-6000-36B

36

Vehicle speed signal Testing of electrical components of gasoline injection system HFM

From 04/95 (HHT diagnosis identifier 49)

AD07.51-P-6000-24B