Test engine performance and exhaust emissions

AR07.00-P-3003WB

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) with STAR DIAGNOSIS

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) with STAR DIAGNOSIS

Engine

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

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

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) with STAR DIAGNOSIS

Engine

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

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.944/975, 112.940, 113.943 in model 208

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.945 as of 6/1/98 in model 208.335

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.945 in model 208.435

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

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

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.974 in model 202

with code 491 (US version)

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.975 as of 8/1/96 in model 202.024

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

111.975 in model 202.085

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

112.922/944, 113.941/960 in model 220

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

112.942, 113.942 in model 163

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Engine

113.992 in model 230.474

Gasoline injection and ignition system (ME-SFI) with STAR DIAGNOSIS

Check engine connection scheme. Shown on model 210

X11/4

Diagnostic data link connector (16- or 38-pin)

005

Emission sensor

006

Exhaust gas measuring instrument

014

Exhaust gas suction funnel

0100

STAR DIAGNOSIS

 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

Motor 104.9, 111.9, 112.9, 113.9, 119.9, 120.9

AH07.00-P-3003-01A

References to test conditions for engine testing and adjusting work

AH07.00-P-3000-01A

1

Check engine, regulate it

Engine 104.9, 111.9, 112.9, 113.9, 119.9, 120.9

AR07.00-P-3001WB

 Test and adjustment values
in the HHT-WIN

 Engine 119
dh0a00pm00062x

 Engine 120
dh0a00pm00061x

 applicable HHT-WIN content:
Driving mode (check engine output)

2

Connect measuring instruments as shown in connection scheme

Connect Star Diagnosis



AD00.00-P-2003A

 Commercially available devices/tools
STAR DIAGNOSIS Compact diagnosis system for passenger cars
4-gas measuring instrument with Lambda computation

 Measuring connection

*103589009100

 Socket

*111589030900

 Adapter

*140589146300

 Emission probe

*126589116300

3

Secure front wheels


Retainer locks with 100 mm
distance in front of front wheels

4

Ignition: OFF, remove ABS/ASR hydraulic unit coupling in the wheel arch. ESP/ASR/ETS/ABS indicator lamp lights up during the trip. In the case of a multifunction display, the text "Slip, ASR, regulation" appears in the display. After performing a check, connector the connector and clear the fault memory.

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

5

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

 Risk of the engine overheating

6

Warm up the maj. assys under partial load selector lever position "D" or 3rd gear with a load of approx. 25 kW

 Engine oil temperature > 80°C.

 Do not exceed 120°C

7

Check the engine oil temperature

 Engine 112, 113 with HHT-WIN

8

Check the coolant temperature

with HHT-WIN

9

Check idle speed

with HHT-WIN

 Selector lever position P/N Air conditioning system and additional consumers switched off.

10

Check air mass

with HHT-WIN

 Engine: idle

11

Check HFM-SFI voltage

with HHT-WIN

12

Check ignition angle

with HHT-WIN

13

Check injection duration

with HHT-WIN

 Engine: idle

14

Check camshaft adjustment solenoid

 only engine 104, 111

15

Check camshaft Hall sensor

with HHT-WIN

16

Check intake air temperature

with HHT-WIN

17

Check purge valve duty cycle

with HHT-WIN

18

Check battery voltage

with HHT-WIN

19

Check actuator

with HHT-WIN

20

Check pedal value sensor

with HHT-WIN

21

Check throttle valve angle

with HHT-WIN

22

Check closed throttle and wide open throttle detection

with HHT-WIN

23

Check wide open throttle/closed throttle stop on the pedal value sensor

24

Check knock control approval

with HHT-WIN

25

Check knock ignition angle

with HHT-WIN

26

Check knock sensor

with HHT-WIN

27

Check refrigerant compressor

with HHT-WIN

28

Check transmission protection

with HHT-WIN

29

Check deceleration fuel shutoff

with HHT-WIN

30

Check wide open throttle performance



Correction tables for calculating actual performance value

AH00.10-P-2010-02A



Notes on performance correction

AH00.10-P-2010-01A

 Only drive with wide open throttle for as long as is necessary in order to read off the instruments. Compare the displayed output values with the test and adjustment values. When doing so, note the barometer reading, coolant temperature and intake air temperature.

31

Check exhaust emission values/lambda control



Purge control switchover valve - location/task/design/function

GF47.30-P-4030L

 Check under load. Air filter installed. Cool the engine down to around 80°C if necessary.
Wide open throttle CO
Upper partial load CO (remove purging), display oscillates.
Lower partial load CO (remove purging), display oscillates.

 If the catalytic converter is hot (engine oil > 100°C), a high conversion rate (or inherent control) is reached, this causes a wide open throttle CO value > 1% vol.
It must be ensured that wide open throttle is detected.

32

Check exhaust back pressure.

 Only do this if necessary, if the engine power does not match the specified value.

Check under load.
Remove the lambda sensor and install a measuring connection 103 589 00 91 00, connect the measuring instrument's pressure connection.

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

33

Check boost pressure in engines with compressor.

 Only do this if necessary, if the engine power does not match the specified value.

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

 Only engine 111.943, 111.944, 111.947, 111.973, 111.975