Mercedes-Benz ML320. Service manual — part 224

SWITCHING INTERIOR LIGHTS ON/OFF MANUALLY, FUNCTION - GF82.20-P-2009GH

MODEL 163

The front dome lamp (with shut-off delay and reading lamp) (E15/2) , the right rear dome lamp (E15/9)
and the left rear dome lamp (E15/8) can be switched manually to continuous operation. Each lamp is equipped
with a switch which is actuated by pressing the lamp glass.

The actuated switch interrupts the automatic lamp actuation by the all-activity module (AAM, N10) and
simultaneously switches the lamp connected to c. 30 to ground. Continuous operation can only be terminated by
pressing the switch again. It is not possible to switch off the automatic lamp actuation.

The left front and right front footwell lamps (E17/16 and E17/15) are switched on together with the front

dome lamp (E15/2) The rear interior lamp (E15/3) can also be switched manually to continuous operation.
Automatic lamp actuation is actuated directly when the tailgate is opened and not by the all-activity module. It
is not possible to switch off automatic lamp actuation manually.

Fig. 16: Identifying Front Dome Lamp (With Shut-Off Delay And Reading Lamp)

microswitches,
location/purpose/
design/function

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

Fig. 17: Identifying Left Rear Dome Lamp And Right Rear Dome Lamp

SWITCHING INTERIOR LIGHTS ON/OFF AUTOMATICALLY, FUNCTION - GF82.20-P-2010GH

MODEL 163

Automatic actuation of interior lights is triggered by



opening a door,



unlocking vehicle with transmitter key,



switching off ignition within 30 seconds of switching off exterior lighting (terminal 58k)

or



after crash recognition.

When opening a door, the respective rotary tumbler microswitch (S87/2, S87/3, S87/6 or S87/7) is actuated
and a signal for automatic light actuation is sent to All-Activity-Module (AAM, N10)

With crash recognition by ETR control module with airbag (ETR/ AB, N2/2) up to 11.99 or by restraint
systems control module (N2/7) as of 12/99, signal for automatic light actuation is sent to All-Activity-Module
via a separate cable.

All-Activity-Module actuates corresponding interior lights dimmed and switches them off again, after expiry of

Actuating rear dome
lamp

GF82.20-P-4005GH

All-activity module
(AAM)

GF54.21-P-4100GH

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

switched-on time.



Lights switched on manually cannot be switched off by All-Activity-Module.



Rear interior lamp (E15/3) is actuated directly by opening of rear door and not via All-Activity-Module.



Front and rear entrance and exit lamps (E17/3, E17/4, E17/5 and E17/6) introduced as of 12/99 are
actuated via the Extended-Activity-Module (EAM) when corresponding door is opened.

Following table shows which lights are switched on automatically, according to triggering.

Event

Dome

lamp with

delay and

reading

lamp, front

Footwell

lamp, front

left or right

(as of

12.99)

Entrance/exit

lamp, front left or

right door (as of

12.99)

Dome

lamp,

front left

Dome

lamp, rear

right

Entrance/exit

lamp, rear left or

right door (as of

12.99)

Driver door or
front passenger
door opened

X

X

X

Rear left door
or rear right
door opened

X

X

X

Central
locking
unlocked

X

X

X

X

Ignition "Off"

X

X

X

X

Crash
recognition

X

X

X

X

Control of interior lighting switch-on time,
function

GF82.20-P-
3001GH

Dimming interior lighting, function

GF82.20-P-
3002GH

Control of rear dome lamp, function

GF82.20-P-
4005GH

Rotary tumbler microswitch, location/purpose/
design/function

GF82.20-P-
4105GH

Locking with transmitter key, function

Up to 11/99

GF80.20-P-
3005GH

Arrangement/purpose/design/function of All-
Activity-Module (AAM)

Up to 11/99

GF54.21-P-
4100GH

Arrangement/purpose of Extended-Activity-
Module

GF54.21-P-
4106GH

Supplemental restraint system (SRS), function Up to 11/99

GF91.60-P-

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

CONTROL OF OPERATING PERIOD OF INTERIOR LIGHTS, FUNCTION - GF82.20-P-3001GH

MODEL 163

The switch-on time for the interior lights is controlled by the all-activity module (AAM) (N10) . All lights are
faded off.



When the doors are open the corresponding lamps are switched off after 30 min.



After closing the last front door or last rear door the corresponding lights are switched off after 10 s.



After recognition of a crash the interior lights are switched back off after 30 min.



When the ignition is switched on all of the lights are switched off immediately.

Lights switched on manually are not switched off by the AAM

SWITCHING OFF INTERIOR LIGHTS WITH FADE-OFF FEATURE, FUNCTION - GF82.20-P-3002GH

MODEL 163

The interior lights are faded on and off by the all-activity module (AAM) (N10) . For this purpose the lamps
are actuated by the AAM with a square wave voltage. The frequency of the square wave voltage is 122 Hz and
remains constant. Only the on/off ratio of the square wave voltage is changed during fade on from 0 to 100 %
within 2.5 s. When fading off the on/off ratio is reduced from 100 % to 0 % within 2.5 s.

ACTUATING ENTRANCE/EXIT LAMPS, FUNCTION - GF82.20-P-4004GH

0002GH

As of 12/99

GF91.60-P-
0002GI

Switching off interior
lights with face-off
feature

GF82.20-P-3002GH

Switching interior lights
on/off manually, function

GF82.20-P-2009GH

Switching interior lights
on/off automatically,
function

GF82.20-P-2010GH

All-activity module
(AAM)

GF54.21-P-4100GH

All-activity module
(AAM)

GF54.21-P-4100GH

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me