Mercedes-Benz ML320. Service manual — part 716

AD54.30-P-6000-01GH

Instrument cluster, testing electrical system IC Model 163

t

A

Scope of test

Measuring instrument/

Test connection

Operation/

Requirement

Specified value D Possible cause/

Remedy

1.0

Instrument cluster (A1)

Voltage supply,
terminal 30

3

w

(A.3)

A1

c

L

11

(A.11)

Ignition: OFF

Remove A1

Coupling "A" (18-pin)

disconnected

11-14 V

D Fuse f13 in fuse and relay

box F1

D Cables

Value in order

#

t

1.1

1.1

Voltage supply,

terminal 15

3

w

(A.3)

A1

c

L

9

(A.9)

Ignition: ON

11-14 V

D Fuse f22 in fuse and relay

box F1

D Cables

Value in order

#

t

1.2

1.2

Voltage supply,

terminal 15R

3

w

(A.3)

A1

c

L

7

(A.7)

Ignition: ON

11-14 V

D Fuse f10 in fuse and relay

box F1

D Cables

Value in order

#

D A1

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AD54.30-P-5000GH

Instrument cluster (IC) diagnosis troubleshooting

10.4.97

MODEL

163

Connection and use of test equipment

AD00.00-P-1000AZ

Instrument cluster diagnosis, previous
knowledge

AD54.30-P-2000GH

Explanatory notes on diagnosis
troubleshooting chart IC

AD54.30-P-5000-01GH

Display instruments controlled via CAN
troubleshooting chart IC

AD54.30-P-5000-02A

Display instruments controlled directly,
troubleshooting chart IC

AD54.30-P-5000-03A

Troubleshooting

Complaint

Possible cause

Notes

Remedy/Test step

Instrument cluster (A1) completely inoperative Voltage supply, instrument cluster (A1)

AD54.30-P-6000-01GH

Malfunction indicator lamps or indicator lamps
inoperative

Voltage supply, instrument cluster (A1)

AD54.30-P-6000-01GH

HHT and instrument cluster cannot
communicate

Cables, instrument cluster (A1)

AD54.30-P-6000-02GH

Low brake fluid level/parking brake indicator
lamp, brake pad wear indicator lamp, ABS
MIL, malfunction indicator lamp (ETS, ASR,
ESP) come on together and speedometer
remains on lower stop.

Traction system control module (N47)

AD42.35-P-1001BZ

RPM counter, engine coolant gauge remain
on the lower stop and the low engine oil level
indicator lamp comes on.

Injection system control module (N3)

AD07.61-P-1000AZ

Low brake fluid level/parking brake indicator
lamp, brake pad wear indicator lamp, low
engine oil level indicator lamp, ABS MIL,
malfunction indicator lamp (ETS, ASR, ESP)
come on together and RPM counter, engine
coolant gauge and speedometer remain on
lower stop.

CAN faulty

AD54.30-P-6000-04GH
AD54.30-P-6000-05GH

Steering lock warning lamp (A1e40) is
continuously illuminated or is inoperative.

Cables,
steering lock switch (S97/1)

AD54.30-P-6000-06GH

Coolant level indicator disrupted

Cables,

Coolant level indicator electronic switch (S41)

Model 163 as of 3.98

AD54.30-P-6000-42GH

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GF54.30-P-0002-01GC

Instrument cluster (IC), block diagram

n

P54.30-0785-06

58

Terminal 58

58d

Terminal 58d

61

Terminal 61

A1

Instrument cluster

X11/4

Data link connector (DTC readout)

a

Engine control module

b

Traction system control module

c

Engine control module inputs, e.g.
ECT sensor

d

Traction system control module
inputs, e.g. wheel speed sensors

e

Direct inputs

f

Transfer case control module (N78)
(model 163 only)

g

Gear recognition module (A61) or
automatic clutch control module
(N15/4) (model 168 only)

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AF54.30-P-8400A

Instrument cluster indicates: Oil sensor defective, oil level below min. or oil level
above max. with engine running and at operating temperature. No DTC stored.

19.5.98

MODEL

129.0, 163.1, 202.0, 208.3 /4, 210.0 /2 /6, 220.0 /1 with ENGINE 112

MODEL

129.0, 163.1, 202.0, 208.3 /4, 210.0 /2, 220.0 /1 with ENGINE 113

Damage code

Cause

Remedy

54 201 90

Oil low, connector defective or coding error

1

Shut off engine and wait 2 min. (key
position 0)

Instrument cluster indicates oil sensor

defective, oil level below min. or oil level
above max. with engine warm and running.

No DTC stored in DTC memory!

2

Check oil level with oil dipstick

3

Check oil level on instrument cluster:

- Key in steering wheel lock position 2,
engine not running
- Wait until - - - - - - appears on
instrument cluster
- When this is displayed press the reset
button for the tripodometer twice within
1 sec. (display appears only after
expiration of a waiting time (max. 30
min.) depending on engine oil
temperature)

Oil level is at bottom mark on oil dipstick

and instrument cluster indicates:

-1L, -1,5L or -2L

#

4

Add quantity of oil indicated on
instrument cluster display and repeat
test.

Oil level at upper mark on dipstick and

instrument cluster indicates either oil level
okay or -1L, -1,5L, -2L

#

5

Recode instrument cluster

AF54.30-P-8600A

Problem still present

#

6

Check cable to oil sensor, oil sensor
connectors, control module and fuse
box (see wiring diagram) for good contact

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