1997 MERCEDES-BENZ ML500 fuse box

Fig. 18: Relay Assignments Fuse & Relay Box F1
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fuse & Relay Box F2 Relay Assignments
For relay locations, see Fig. 15 . For relay assignments, see Fig. 19 .
Fig. 19: Relay Assignments Fuse & Relay Box F2

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2001-04 ELECTRICAL Fuses & Circuit Breakers - 163 Chassis
me
Saturday, October 02, 2010 3:22:06 PMPage 31 © 2006 Mitchell Repair Information Company, LLC.

AR88.40-P-3100GH
Remove/install control cable for engine hood
5.5.00

MODEL
163.113 /128 /136 /154 /157 /172 /174 /175

P88.40-2140-06

Illustrated up to VIN A145272, X708318

1
Clips

2
Rubber grommet

3
Engine hood control cable


Removing and installing

1
Open engine hood and raise to vertical position
Up to VIN A145272, X708318.

AR88.40-P-1000GH

As of VIN A145273, X708319.

AR88.40-P-1000GI

2.1
Remove upper frame cross member
Only up to VIN A145272, X708318

AR62.30-P-2300GH
2.2Remove engine hood lock
Only as of VIN A145273, X708319.

AR88.40-P-3200GI

3.1
Unhook engine hood control cable from clip at

bottom of radiator cross member
Only as of VIN A145273, X708319.

4
Remove cover from fuse and relay box

5 screws.

5
Unhook clips (1) from body

6
Remove left cover below instrument panel
Left hand drive vehicle.

AR68.10-P-1500GH

Vehicles with right-hand steering up to

VIN A145272, X708318.

AR68.10-P-1520GH

Vehicles with right-hand steering as of

VIN A145273, X708319.

AR68.10-P-1520GI

7
Remove paneling in left footwell

AR68.30-P-4010GH

8
Unhook engine hood control cable at side at

clip in footwell

9
Remove rubber grommet (2) from fuse and

relay box

10
Pull out engine hood control cable (3) through
firewall on engine side and remove


Installation:
Ensure that engine hood

control cable is routed cleanly along fuse and

relay box.

11
Install in the reverse order

Copyright DaimlerChrysler AG 09.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

TESTS.
Normal Ventilation In Regulating Mode
To check normal ventilation in regulating mode, set temperature selector knob to White range (vertical). Set
mode control knob to 4-o'clock position. Ensure A/C button indicator is illuminated. Air will vent from upper
and lower outlets and A/C compressor will engage. Ambient air will flow from center outlet and coolant
circulation pump will operate. If operation is not as specified, perform the following in order:
Check A/C button activation. See A/C BUTTON under ELECTRICAL TESTS.
Check A/C pressure switch. See A/C REFRIGERANT PRESSURE SWITCH under ELECTRICAL
TESTS.
Economy Setting Not In Heating Mode
To check economy setting without heating mode activated, set temperature selector knob to Blue range. Set
mode control knob to the 9-o'clock position. Ensure A/C button indicator is not illuminated. Ambient air will
flow from center outlet and A/C compressor will NOT be engaged. If operation is not as specified, perform the
following:
Check A/C button activation. See A/C BUTTON under ELECTRICAL TESTS.
Economy Setting In Heating Mode
To check economy setting with heating mode activated, set temperature selector knob to Red range. Set mode
control knob to the 4-o'clock position. Ensure A/C button indicator is not illuminated. Heated air will flow from
lower, upper and center outlets and A/C compressor will NOT be engaged. If operation is not as specified,
perform the following:
Check A/C button activation. See A/C BUTTON under ELECTRICAL TESTS.
Recirculation Mode
To check recirculation mode, press fresh/recirculation button. Ensure fresh/recirculation indicator is
illuminated. Set blower speed knob to position No. 4. Blower fan noise will increase noticeably. If operation is
not as specified, check wiring between recirculated air flap element, heater-A/C switch and No. 16 fuse (15-
amp).
ELECTRICAL TESTS
Voltage Supply Circuit Z50/2
1. Connect socket box to A/C push button control unit and wiring harness. See CONNECTING TEST
EQUIPMENT . Turn ignition on, with engine off. Connect voltmeter positive lead to socket box terminal
No. 7 and negative lead to terminal No. 9.
2. Voltage should be 11-14 volts. If voltage is not as specified, check voltage supply circuit Z50/2 between
No. 16 fuse (15-amp) and connected components. See WIRING DIAGRAMS
. Repair as necessary.

2001 Mercedes-Benz ML320
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55
me
Saturday, October 02, 2010 3:25:10 PMPage 10 © 2006 Mitchell Repair Information Company, LLC.

blend air flap actuator motor.
6. Turn ignition off. Disconnect test cable from A/C push button control unit. Connect ohmmeter positive
lead to socket box terminal No. 1 and negative lead to terminal No. 8. Resistance should be 120 ohms.
7. If resistance is not as specified, check blend air flap actuator motor circuits. See WIRING DIAGRAMS
.
Repair as necessary. If circuits are okay, replace blend air flap actuator motor.
A/C Button
1. Connect socket box to A/C push button control unit and wiring harness. See CONNECTING TEST
EQUIPMENT . Connect voltmeter positive lead to socket box terminal No. 10 and negative lead to
terminal No. 9.
2. Turn ignition on. Depress A/C button switch to on position and set blower speed knob to position No. 4.
Ensure A/C button indicator is illuminated. Voltage should be less than one volt. Depress A/C button
switch to off position with A/C button indicator not illuminated or set blower speed knob to off position.
Voltage should be 11-14 volts.
3. If voltage is as specified, go to next step. If voltage is not as specified, check A/C button wiring harness
circuits. See WIRING DIAGRAMS
. Repair as necessary. If circuits are okay, replace A/C button
switch.
4. Turn ignition on. Depress A/C button switch to on position and set blower speed knob to position No. 4.
Ensure A/C button indicator is illuminated. Connect voltmeter positive lead to socket box terminal No. 4
and negative lead to terminal No. 9. Voltage should be more than 3.0 volts.
5. Connect Fused Jumper Wire (124 589 37 63 00) between socket box terminals No. 4 and 11. Depress A/C
button switch to on position and set blower speed knob to position No. 4. Ensure A/C button indicator is
illuminated. Measure voltage. Voltage should be less than one volt.
6. If voltage is not as specified, check A/C button wiring harness circuits. See WIRING DIAGRAMS
.
Repair as necessary. If circuits are okay, replace A/C button switch.
A/C Refrigerant Pressure Switch
1. Turn ignition off. Disconnect refrigerant pressure sensor connector. Turn ignition on. Connect voltmeter
positive lead to pressure sensor harness connector terminal "B" (Pink wire) and negative lead to terminal
"A" (Tan wire). Voltage should be 4.75-5.25 volts.
2. If voltage is as specified, replace A/C refrigerant pressure sensor. If voltage is not as specified, check
wiring harness between refrigerant pressure sensor and All Activity Module (AAM). See WIRING
DIAGRAMS . Repair as necessary. If circuits are okay, replace AAM and retest A/C system.
Outside Temperature Sensor
1. Connect socket box to A/C push button control unit and wiring harness. See CONNECTING TEST
EQUIPMENT . Turn ignition off. Connect ohmmeter positive lead to socket box terminal No. 12 and
negative lead to terminal No. 3.
2. Disconnect test cable from A/C push button control unit. See OUTSIDE TEMPERATURE SENSOR
RESISTANCE table. If resistance is not as specified, check wiring harness between outside temperature
sensor and A/C push button control unit. See WIRING DIAGRAMS
. Repair as necessary. If wiring
harness is okay, replace outside temperature sensor.

2001 Mercedes-Benz ML320
2000-01 MANUAL A/C-HEATER SYSTEMS ML 320, ML 430 & ML 55
me
Saturday, October 02, 2010 3:25:10 PMPage 13 © 2006 Mitchell Repair Information Company, LLC.

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

1.0Instrument cluster (A1)


Voltage supply,

terminal 30

3 w

(A.3)

A1

cL
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

cL
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

cL
7

(A.7)

Ignition: ON
11
-
14 V

D
Fuse f10 in fuse and relay

box F1

D
Cables

Value in order
#
D
A1

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

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

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

Fig. 59: Identifying Paneling In Footwell
REMOVING AND INSTALLING PANELING ON A-PILLAR - AR68.30-P-4050GH
MODELS 163.113 /128 /136 /154 /157 /172 /174 /175
Vehicle illustrated up to 31.8.98

Remove/install
1Remove front door sill molding cover (1)
2Unscrew screws from door sill molding on rocker panel Only two front screws.
3Pull off door seal (2) in the area of driver's side paneling (3) or
front passenger's side paneling (4)
4Unscrew screw (5) for engine hood release lever (6) on A-pillar Driver's side only.
5Unhook engine hood cable and remove engine hood release
lever (6) Driver's side only.
6.1Rotate locks (7) on the cover of the fuse and relay box (8) 1/4
revolution counterclockwise into the vertical position As of 09.99. Passenger
side only.
7.1Pull back cover of fuse and relay box (8) (arrow) and remove As of 09.99. Passenger
side only.
8.1Unscrew nut (9) As of 09.99. Passenger
side only.
9Unclip driver's side paneling (3) and front passenger's side
paneling (4) and remove Lift door sill molding
slightly to allow removal.
10Install in the reverse order

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Interior Equipment - 163 Chassis
me
Saturday, October 02, 2010 3:35:22 PMPage 58 © 2006 Mitchell Repair Information Company, LLC.