Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 222

GROUNDS

The EMIC receives and supplies a ground path to

several switches and sensors through the following
hard wired circuits:

• Ambient

Temperature

Sensor

Return

(Optional)

• Fuel Level Sensor Return

• Ground
Refer to the appropriate wiring information for

additional details.

COMMUNICATION

The EMIC has provisions for the following commu-

nication circuits:

• CAN Data Bus - High

• CAN Data Bus - Low

• Diagnostic Serial Communication Interface

(SCI) Data Bus Line

Refer to the appropriate wiring information for

additional details.

DIAGNOSIS AND TESTING - INSTRUMENT
CLUSTER

The hard wired inputs to and outputs from the

instrument cluster may be diagnosed and tested
using conventional diagnostic tools and procedures.
Refer to the appropriate wiring information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.

If the instrument cluster is completely inoperative,

be certain to check the fused B(+) circuit fuses and
wiring for the instrument cluster. If the cluster gen-
eral illumination is inoperative, be certain to check
the instrument lighting fuse and the input circuit to
the instrument cluster from the exterior lighting cir-
cuitry of the multi-function switch on the steering
column.

Conventional diagnostic methods may not prove

conclusive in the diagnosis of the instrument cluster.
In order to obtain conclusive testing of the instru-
ment cluster, the Controller Area Network (CAN)
data bus network and all of the electronic modules
that provide inputs to or receive outputs from the
instrument cluster must also be checked. The most
reliable, efficient, and accurate means to diagnose
the instrument cluster, the CAN data bus network,
and the electronic modules that provide inputs to or
receive outputs from the instrument cluster requires
the use of a diagnostic scan tool and the appropriate
diagnostic information. The diagnostic scan tool can
provide confirmation that the CAN data bus network
is functional, that all of the modules are sending and
receiving the proper electronic messages over the
CAN data bus, and that the instrument cluster is

receiving the proper hard wired inputs and respond-
ing with the proper hard wired outputs needed to
perform its many functions.

WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental

restraint

system

before

attempting

any

steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.

STANDARD PROCEDURE

CLUSTER PROGRAMMING

NOTE: After replacing the Instrument Cluster (IC)
according to the service procedures, determine the
optional equipment on the vehicle by accessing the
sales code information using the Vehicle Identifica-
tion Number (VIN) on DealerCONNECT.

(1) Using the DRBIII

t, select MISCELLANEOUS

FUNCTIONS in the Instrument Cluster (IC) section.

(2) Select

MODULE

SERVICE

REPLACE-

MENT.

(3) Following the prompts on the DRBIII

t, enter

the correct parameters that are applicable to the
vehicle. Use the sales code information and visual
inspection to obtain the correct parameters.

CAUTION: Do not lock down the instrument cluster
until the following steps are followed or the instru-
ment cluster may be irreversibly damaged.

(4) After entering the proper parameters into the

IC, turn the ignition switch to the OFF position for
30 seconds, then turn the ignition switch ON.

(5) Test drive the vehicle for at least 10 minutes

before proceeding.

(6) Check ALL modules for any parameterization

DTCs. If any parameterization DTCs are present, one
or more parameters entered into the IC are incorrect.
Verify all parameters entered using the sales code
information and visual inspection of the vehicle.

(7) If the parameters entered are verified as cor-

rect and parameterization DTCs are still present,
refer to the appropriate diagnostic information.

(8) If no parameterization DTCs are present, lock

down the IC.

INSTRUMENT CLUSTER

8J - 7

NOTE: Mileage will not be displayed until the IC has
been locked down.

REMOVAL

WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental

restraint

system

before

attempting

any

CAUTION: The following procedure is for replace-
ment of an ineffective and unresponsive Instrument
Cluster (IC) with a new unit. If the IC is ineffective
or damaged but still responsive, it may be replaced
using an automatic replacement procedure that will
upload IC parameterization data from the existing IC
to the diagnostic scan tool, then download that data
to the new IC. Refer to the MISCELLANEOUS FUNC-
TIONS menu item under the IC module in the diag-
nostic

scan

tool,

then

select

MODULE

AUTO

REPLACEMENT and follow the scan tool prompts to
replace the IC. Do not lock down the IC until all of
the steps are followed and completed or the new IC
may be irreversibly damaged. This procedure initial-
izes and configures the IC for certain optional
equipment on the vehicle without the need for per-
forming a separate cluster programming procedure.
Failure to correctly parameterize the IC prior to it
being electronically locked down will result in the
IC being incorrectly and irreversibly configured for
improper vehicle equipment options, which will
require the IC be replaced again with another new
and unused unit to resolve.

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the cluster bezel from the instrument

panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - REMOVAL).

(3) Remove the cluster top cover from the instru-

ment panel. (Refer to 23 - BODY/INSTRUMENT
PANEL/TOP COVER - CLUSTER - REMOVAL).

(4) Remove the two screws that secure the instru-

ment cluster mounting ears to the instrument panel
base structure (Fig. 4).

(5) Roll the top of the instrument cluster rearward

far enough to access and release the latch that
secures the Remote Keyless Entry (RKE)/immobilizer
module to the back of the instrument cluster rear
cover and disengage the module from the cluster
(Fig. 5).

Fig. 4 Instrument Cluster Remove/Install

1 - SCREW (2)
2 - COVER
3 - SCREW (2)
4 - INSTRUMENT CLUSTER
5 - LOOP (2)

Fig. 5 RKE/Immobilizer Module

1 - RKE/IMMOBILIZER MODULE
2 - LATCH
3 - INSTRUMENT CLUSTER

8J - 8

INSTRUMENT CLUSTER

(6) Depress the release (Arrow A) and lift the lever

arm (Arrow B) to disconnect each of the two frame
wire harness connectors for the cluster from the con-
nector receptacles on the back of the cluster housing
(Fig. 6).

(7) Lift the instrument cluster upward far enough

to disengage the two molded plastic pivot loops inte-
gral to the base of the cluster hood from the two
pairs of molded plastic pivot hooks that are integral
to the top of the instrument panel base structure.

(8) Remove the instrument cluster from the instru-

ment panel.

INSTALLATION

WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental

restraint

system

before

attempting

any

(1) Position the instrument cluster to the instru-

ment panel.

(2) Align the two molded plastic pivot loops inte-

gral to the base of the cluster hood between the two

pairs of molded plastic pivot hooks that are integral
to the top of instrument panel base structure, then
push downward on the top of the cluster until the
loops snap into engagement with the hooks (Fig. 6).

(3) Roll the top of the instrument cluster rearward

to access, reconnect, and latch the two frame wire
harness connectors for the cluster to the connector
receptacles on the back of the cluster housing.

(4) Engage and latch the Remote Keyless Entry

(RKE)/immobilizer module to the back of the instru-
ment cluster rear cover (Fig. 5)

(5) Roll the top of the instrument cluster forward

to position the instrument cluster into the instru-
ment panel.

(6) Install and tighten the two screws that secure

the instrument cluster mounting ears to the instru-
ment panel base structure (Fig. 4). Tighten the
screws to 2 N·m (20 in. lbs.).

(7) Reinstall the cluster top cover onto the instru-

ment panel. (Refer to 23 - BODY/INSTRUMENT
PANEL/TOP COVER - CLUSTER - INSTALLA-
TION).

(8) Reinstall the cluster bezel onto the instrument

panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - INSTALLATION).

(9) Reconnect the battery negative cable.

CAUTION: If an ineffective and unresponsive Instru-
ment Cluster (IC) has been replaced with a new
unit, the new IC must be initialized and configured
for certain optional equipment on the vehicle using
a cluster programming procedure. (Refer to 8 -
ELECTRICAL/INSTRUMENT CLUSTER - STANDARD
PROCEDURE - CLUSTER PROGRAMMING). Failure
to correctly perform this programming procedure
(also referred to as parameterization) prior to the IC
being electronically locked down will result in the
IC being incorrectly and irreversibly configured for
improper vehicle equipment options, which will
require the IC be replaced again with another new
and unused unit to resolve.

ABS INDICATOR

DESCRIPTION

An Anti-lock Brake System (ABS) indicator is stan-

dard equipment on all instrument clusters. The ABS
indicator is located near the lower edge of the instru-
ment cluster, to the right of the multi-function indi-
cator display. The ABS indicator consists of the
International Control and Display Symbol icon for
“Failure of Anti-lock Braking System” imprinted
within a rectangular cutout in the opaque layer of
the instrument cluster overlay. The dark outer layer
of the overlay prevents the indicator from being
clearly visible when it is not illuminated. An amber

Fig. 6 Cluster Connectors

1 - STEERING WHEEL
2 - INSTRUMENT CLUSTER
3 - CONNECTOR (2)

INSTRUMENT CLUSTER

8J - 9

Light Emitting Diode (LED) behind the cutout in the
opaque layer of the overlay causes the icon to appear
silhouetted against an amber field through the trans-
lucent outer layer of the overlay when the indicator
is illuminated from behind by the LED, which is sol-
dered onto the instrument cluster electronic circuit
board. The ABS indicator is serviced as a unit with
the instrument cluster.

OPERATION

The ABS indicator gives an indication to the vehi-

cle operator when the ABS or the electronic brake
force distribution (EBV) systems are faulty or inoper-
ative. This indicator is controlled by a transistor on
the instrument cluster circuit board based upon clus-
ter programming and electronic messages received by
the cluster from the Controller Antilock Brake (CAB)
over the Controller Area Network (CAN) data bus.
The ABS indicator Light Emitting Diode (LED) is
completely controlled by the instrument cluster logic
circuit, and that logic will only allow this indicator to
operate when the instrument cluster detects that the
ignition switch is in the On position. Therefore, the
LED will always be off when the ignition switch is in
any position except On. The LED only illuminates
when it is provided a path to ground by the instru-
ment cluster transistor. The instrument cluster will
turn on the ABS indicator for the following reasons:

• Bulb Test - Each time the ignition switch is

turned to the On position the ABS indicator is illu-
minated by the cluster for about two seconds as a
bulb test.

• ABS Lamp-On Message - Each time the clus-

ter receives a lamp-on message from the CAB, the
ABS indicator will be illuminated. The indicator
remains illuminated until the cluster receives a
lamp-off message from the CAB, or until the ignition
switch is turned to the Off position, whichever occurs
first.

The CAB continually monitors the ABS and EBV

circuits and sensors to decide whether the systems
are in good operating condition. The CAB then sends
the proper lamp-on or lamp-off messages to the
instrument cluster. If the CAB sends a lamp-on mes-
sage after the bulb test, it indicates that the CAB
has detected a system malfunction and/or that the
ABS or EBV systems have become inoperative. The
CAB will store a Diagnostic Trouble Code (DTC) for
any malfunction it detects. For proper diagnosis of
the ABS and EBV systems, the CAB, the CAN data
bus, the electronic message inputs to the instrument
cluster, or the instrument cluster circuitry that con-
trols the ABS indicator, a diagnostic scan tool is
required. Refer to the appropriate diagnostic infor-
mation.

ADR INDICATOR

DESCRIPTION

A constant engine speed (ADR) indicator is stan-

dard equipment on all instrument clusters, but is
only

functional

vehicles

equipped

with

the

optional ADR switch. The ADR indicator is located
near the lower edge of the instrument cluster, to the
right of the multi-function indicator display. The
ADR indicator consists of the text “ADR” imprinted
within a rectangular cutout in the opaque layer of
the instrument cluster overlay. The dark outer layer
of the overlay prevents the indicator from being
clearly visible when it is not illuminated. An amber
Light Emitting Diode (LED) behind the cutout in the
opaque layer of the overlay causes the text to appear
silhouetted against an amber field through the trans-
lucent outer layer of the overlay when the indicator
is illuminated from behind by the LED, which is sol-
dered onto the instrument cluster electronic circuit
board. The ADR indicator is serviced as a unit with
the instrument cluster.

OPERATION

The constant engine speed (ADR) indicator gives

an indication to the vehicle operator concerning the
operating status of the constant engine speed (ADR)
feature. The ADR indicator is controlled by a transis-
tor on the instrument cluster circuit board based
upon cluster programming and electronic messages
received by the cluster from the Engine Control Mod-
ule (ECM) over the Controller Area Network (CAN)
data bus. The ADR indicator Light Emitting Diode
(LED) is completely controlled by the instrument
cluster logic circuit, and that logic will only allow
this indicator to operate when the instrument cluster
detects that the ignition switch is in the On position.
Therefore, the LED will always be off when the igni-
tion switch is in any position except On. The LED
only illuminates when it is provided a path to ground
by the instrument cluster transistor. The instrument
cluster will turn on the traction control indicator for
the following reasons:

• Constant Engine Speed (ADR) Indicator

Lamp-On Message - Each time the cluster receives
an ADR indicator lamp-on message from the ECM,
the indicator will be illuminated. The indicator is
illuminated when the ADR feature has been acti-
vated with the ADR switch, and is turned off when
the ADR feature is deactivated with the ADR switch.
The ADR indicator will be extinguished if the ADR
feature is turned off because the park brake has been
released or the vehicle is in motion. The ADR indica-
tor will also be extinguished if the service brake
pedal is depressed, but the ADR feature will auto-
matically be restored and the indicator illuminated
when the brake pedal is released. The indicator

8J - 10

INSTRUMENT CLUSTER

Была ли эта страница вам полезна?

Да!Нет

3 посетителя считают эту страницу полезной.

Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 222

Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.