Mercedes-Benz ML320. Service manual - part 381

 

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Mercedes-Benz ML320. Service manual - part 381

 

 

1998-2005 ENGINE

Electrical System - Engine - 163 Chassis 

GENERAL INFORMATION 

GENERAL NOTES: PASSENGER CARS: ELECTRICAL SYSTEM - ENGINE - AH15.00-Z-9999AZ 

MODEL all  

 

General notes on 
contactless high voltage 
distribution

ENGINE 112, 113...

AH15.10-P-1002-
01WA

 

General notes on 
contactless high voltage 
distribution

ENGINE 104, 111...

AH15.10-P-1002-
01WD

 

General notes on 
contactless high voltage 
distribution

ENGINE 119, 120...

AH15.10-P-1002-
01WE

 

General notes on testing 
contactless high voltage 
distribution

ENGINE 104, 111, 112, 113, 
119, 120...

AH15.10-P-1003-01W

 

Notes on ignition coil 
characteristics of ignition 
systems

ENGINE 104, 111, 112, 113, 
119, 120...

AH15.10-P-1001-01A

 

Notes on avoiding 
damage to ignition system

ENGINE 
266.920 /940 /960 /980 in 
MODEL 169.0/3,245.2

AH15.10-P-0002-
01AK

 

Notes on avoiding 
damage to the ignition 
system

ENGINE 111 mit Benzin-
Einspritz-und Zundsystem 
PMS

AH15.10-P-0002-01B

 

Notes on avoiding 
damage to the ignition 
system

ENGINE 104, 111 mit Benzin-
Einspritz-und Zundsystem 
HFM

AH15.10-P-0002-01C

 

Notes on avoiding 
damage to the ignition 
system

ENGINE 103, 104, 119 mit 
Benzin-Einspritzanlage KE

AH15.10-P-0002-01E

 

Notes on avoiding 
damage to the ignition 
system

ENGINE 104, 119, 120 mit 
Benzin-Einspritzanlage LH

AH15.10-P-0002-01F

 

Notes on avoiding 
damage to the ignition 
system

ENGINE 166 mit Benzin-
Einspritz- und Zundsystem 
MSM

AH15.10-P-0002-01G

 

Information on avoiding 
damage to ignition system

ENGINE 137, 275, 285

AH15.10-P-0002-01L

 

Notes on avoiding 

ENGINE 272, 273

AH15.10-P-0002-01V

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Electrical System - Engine - 163 Chassis

  

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Electrical System - Engine - 163 Chassis

  

me 

 

me 

 

NOTES ON AVOIDING DAMAGE TO IGNITION SYSTEM - AH15.10-P-0002-01D 

Engine 104, 111, 112, 113, 119, 120, 156, 271  

To avoid damage to control unit connect and disconnect the two connectors on control unit only when 
ignition is switched off.  

Terminal 1 of ignition coils must not be short-circuited to GND, e.g. as anti-theft protection.  

Install only original ignition system components.  

Do not operate ignition system at starting speed unless all of the ignition cables are connected.  

No tests such as holding ignition cable 4 at a distance to GND, unplugging a spark plug connector or 
pulling cable 4 out of the ignition coils, may be performed at starting speed or when the engine is 
running.  

Every high voltage circuit must be loaded with at least 2 kohms (spark plug connector).  

If it is necessary to test the ignition spark when providing roadside assistance, this must only be done with 
a spark plug at a cylinder ignition cable. Ensure that the spark plug has good contact to ground.  

Before working at cranking speed, e.g. checking compression pressure, switch off ignition and disconnect 
connector "2" from control unit.  

 Engine 120 has two fuel injection and ignition systems. 

Use of testers  

Only connect and disconnect secondary measuring sensor to corresponding ignition cables when vertical 
engine and ignition are switched off.  

If the shot-circuit protection is operated (cylinder comparison) and the engine stays upright, it is not 
possible to conduct the test with this test instrument.  

Do not connect test lamp to ignition coil terminals 1 and 15.  

NOTES ON IGNITION COIL CHARACTERISTICS OF IGNITION SYSTEMS - AH15.10-P-1001-01A 

Engine 104, 111, 112, 113, 119, 120  

  

In the case of the twin-spark ignition coil with kV pickup in ignition systems ME-SFI 2.1 and HFM-SFI, no 
measurement facility exists at the ignition coil using the kV pickup although a kV pickup is fitted. It is only 

damage to ignition system

 

Notes on avoiding 
damage to ignition system

ENGINE 104, 111, 112, 113, 
119, 120, 156, 271, 112 mit 
Benzin-Einspritz- und 
Zundsystem ME

AH15.10-P-0002-01D

 

Notes for ceramic glow 
plugs

ENGINE 646.8, 642

AH15.20-P-0001-01A

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Electrical System - Engine - 163 Chassis

  

me 

 

possible to test the primary ignition circuit with adapter cable A.

Ignition coil characteristics of ignition systems 

Engine

Model

HFM-SFI

ME-SFI

PEC

Twin-spark 
ignition coil 

without kV 

pickup

Twin-spark 
ignition coil 

with kV 

pickup

Single-

spark 

ignition coil 

with kV 

pickup

104

129 up to 05/96

X

 

 

X

 

 

104

129 as of 06/96

 

2.1

 

 

X

 

104

140 up to 05/96

X

 

 

X

 

 

104

140 as of 06/96

 

2.1

 

 

X

 

104

202 up to 07/96

X

 

 

X

 

 

104

202 as of 08/96

 

2.1

 

 

X

 

104

210

X

 

 

X

 

 

104

210    

up 

to 05/96

X

 

 

X

 

 

104

210    

as 

of 06/96

 

2.1

 

 

X

 

111

163

X

 

 

 

X

 

111

170.435

X

 

 

 

X

 

111

170.445

 

2.1

 

 

X

 

111

170.447

 

2.1

 

 

X

 

111

202.018/020 up 
to 07/96

 

 

X

X

 

 

111

202.018/020 as 
of 08/96

X

 

 

 

X

 

111

202.025 up to 
07/96

X

 

 

X

 

 

111

202.025 as of 
08/96

 

2.1

 

 

X

 

111

202.022 up to 
07/96

X

 

 

X

 

 

111

202.023 as of 
08/96

X

 

 

 

X

 

111

202.023 as of 
08/96  

 

2.1

 

 

X

 

111

202.024 up to 
07/96

X

 

 

X

 

 

111

202.024 as of 
08/96

 

2.1

 

 

X

 

111

210 up to 05/96

X

 

 

X

 

 

111

210 as of 06/96

X

 

 

 

X

 

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Electrical System - Engine - 163 Chassis

  

me 

 

GENERAL NOTES ON CONTACTLESS HIGH VOLTAGE DISTRIBUTION - AH15.10-P-1002-01WA 

Engine 112, 113 with ME-SFI fuel injection and ignition system  

The ignition system can be tested at the primary side and secondary side. It is only possible to test ignition 
circuit a and ignition circuit b one after the other. 

The ignition coils are fitted as standard with cast mounts for the secondary adapters (kV pickup C). The primary 
ignition voltage curve can be plotted with a primary adapter cable (D).

112

163

 

2.0

 

 

X

 

112

202

 

2.0

 

 

X

 

112

208

 

2.0

 

 

X

 

112

210

 

2.0

 

 

X

 

112

220

 

2.0

 

 

X

 

113

163

 

2.0

 

 

X

 

113

202

 

2.0

 

 

X

 

113

208

 

2.0

 

 

X

 

113

210

 

2.0

 

 

X

 

113

220

 

2.0

 

 

X

 

119.982

129

 

1.0

 

 

 

X

119.980

140

 

1.0

 

 

 

X

119.981

140

 

1.0

 

 

 

X

119

210

 

1.0

 

 

 

X

120.983

129

 

1.0

 

 

 

X

120.982

140

 

1.0

 

 

 

X

 

2001 Mercedes-Benz ML320 

1998-2005 ENGINE Electrical System - Engine - 163 Chassis

  

me 

 

 

 

 

 

 

 

 

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