Test engine performance and exhaust emissions

AR07.00-P-3003WA

Test engine performance and exhaust emissions

15.11.2019

Engine

104.941 as of 8/1/96, 111.944 as of 8/1/96, 112.910/920, 113.944 in model 202

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

104.943/991 as of 6/1/96, 112.923/943, 113.961, 119.982, 120.983 in model 129

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

104.944/994 as of 6/1/96, 119.980/981, 120.982 in model 140

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

104.995 as of 6/1/96 in model 210

with code 491 (US version)

with code 498 (Japanese version)

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.943/973, 111.946 as of 6/1/98 in model 170

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.944/975, 112.940, 113.943 in model 208

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.945 as of 6/1/98 in model 208.335

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.945 in model 208.435

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.947, 112.911/921/941, 113.940/980, 119.985 in model 210

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.974 in model 202

with code 491 (US version)

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.975 as of 8/1/96 in model 202.024

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

111.975 in model 202.085

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

Engine

112.942, 113.942 in model 163

Gasoline injection and ignition system (ME-SFI [ME]) with handheld tester

A

Control

X11/4

Diagnostic data link connector

005

Emission sensor

006

Exhaust gas measuring instrument

014

Exhaust gas pipe

018

Oil remote thermometer

042

Pressure measuring device

087

Handheld tester

094

Multiplex cable

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 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

Topical note

Notes regarding test conditions when testing engine output and exhaust gas

AH07.00-P-3003-01A

References to test conditions for engine testing and adjusting work

AH07.00-P-3000-01A

1

Check engine, regulate

AR07.00-P-3001WA

 Test and adjustment values
in HHT

 Engine 119
dh0a00pm00062x

 Engine 120
dh0a00pm00061x

 Relevant HHT content:
Operating status (check engine output)

2

Connect measuring instruments according to connection scheme

Connect HHT



Connect diagnosis testing equipment

AD00.00-P-2003A

 Commercially available devices/tools
Handheld tester
Test cable (multiplexer)
4-gas measuring instrument with lambda calculation

 Measuring connection

*103589009100

 Socket

*111589030900

 Adapter

*140589146300

 Emission probe

*126589116300

3

Secure front wheels


Retainer locks at a distance of 100 mm
in front of front wheels.

4

Ignition: OFF, disconnect ABS/ASR hydraulic unit coupling in wheel arch. ESP/ASR/ETS/ABS indicator lamp lights up during driving. The text "Slip, ASR, control" appears on the multifunction display. After the check, connect connector coupling and clear fault memory!

 Vehicles with ABS/ASR/ESP/ASR/ETS/ABS

5

Aim air flow at cooler and vehicle underside (oil pan, exhaust, catalytic converter, tires). Maintain a distance of approx. 1 m between blower and vehicle.


Risk of engine overheating

6

Warm up major assemblies under partial load in selector lever position "D" or 3rd gear with a load of approximately 25 kW


Do not exceed 120 °C

 Engine oil temperature > 80°C.

7

Check engine oil temperature

 Engine 112, 113 with HHT

8

Check coolant temperature

With HHT

9

Check idle speed

With HHT

 Selector lever position P/N: air conditioning system and additional consumers are switched off.

10

Check air mass

With HHT

 Engine: idle

11

Check HFM-SFI voltage

With HHT

12

Check ignition angle

With HHT

13

Check injection time

With HHT

 Engine: idle

14

Check camshaft adjustment solenoid

 Engines 104, 111 only.

15

Check camshaft Hall sensor

With HHT

16

Check intake air temperature

With HHT

17

Check purge valve duty cycle

With HHT

18

Check battery voltage

With HHT

19

Check actuator

With HHT

20

Check accelerator pedal sensor

With HHT

21

Check throttle valve angle

With HHT

22

Check idle stop and full load identification

With HHT

23

Check idle stop and full load stop on accelerator pedal sensor

24

Check knock control approval

With HHT

25

Check knock ignition angle

With HHT

26

Check knock sensor

With HHT

27

Check refrigerant compressor

With HHT

28

Check transmission protection

With HHT

29

Check overrun mode fuel shutoff

With HHT

30

Check full load performance



Correction tables for calculating actual performance value

Use the correction table for performance determination, except engines 111.943, 111.944, 111.947, 111.973, 111.975

AH00.10-P-2010-02A



Notes on performance correction

AH00.10-P-2010-01A

 Only drive in full load performance for as long as necessary to read off the instruments. Compare the displayed performance values with test and adjustment values. In doing so, observe the barometer reading, coolant temperature and intake air temperature.

31

Check exhaust emission values / lambda control



GF47.30-P-4030L

 Check under load. Air filter installed. Engine approximately 80°C, cool if necessary.
Full load CO
Upper partial load CO (remove purging), display is fluctuating.
Lower partial load CO (remove purging), display is fluctuating.

 A high conversion rate (or local control) is reached when catalytic converter is hot (engine oil > 100°C), which creates a full load CO value > 1% vol..
Ensure that full load is detected.

32

Check exhaust back pressure

 Carry out only when required, if engine output does not match the specified value.

Check under load.
Remove oxygen sensor and install measuring connection 103 589 00 91 00, connect pressure connection of measuring instrument.

 Coat measuring connection with heat-resistant lubricating paste, part no. 000 989 76 51.

33

Check boost pressure in engines with a compressor.

 Carry out only when required, if engine output does not match the specified value.

Remove purge line from idle speed control actuator and connect pressure tester.

 Engines 111.943, 111.944, 111.947, 111.973, 111.975 only