NHTSA ID Number: 10141798
Manufacturer Communication Number: sp54012
TSB/Document Date: 2018-06-18
Summary
sp54012 ICU3 Service Clusters
54-012
ICU3 Service Clusters
>
>
A-Line
L-Line
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Cargo
Acterra
Condor
Sterling Parts
Technical Bulletin
Description of Revisions: This bulletin replaces the version dated
September 2006. Additional information is included about ICU3
configurations.
General Information
To minimize vehicle downtime and assist field service technicians in quickly replacing ICU3 driver instrument
clusters (Instrumentation Control Unit, Level I), PDCs now stock a selection of ICU3 service clusters.
IMPORTANT: Since the ICU3 is designed on a vehicle-specific basis, the clusters in stock for immediate shipment may not exactly match the original, but should be better than or equal to the original cluster.
NOTE: An exact ICU3 replacement cluster can be ordered according to the original vehicle specifications.
This bulletin explains how to choose the correct replacement service cluster, describes service cluster configurations, explains how to replace the ICU3 cluster and its components, and summarizes the process. Read the
entire document before beginning work.
Choosing the Correct Service Cluster
Choose the correct service cluster based on three criteria:
1. Engine Type — Choose either:
• M-B Engine or
• Non M-B Engine
2. Transmission temperature gauge — Choose either:
• With the transmission temperature gauge (required on some vehicles with automatic transmissions) or
• Without the transmission temperature gauge
3. Gauge face configuration — Choose one of these three:
• U.S./Metric for the U.S. market
• Metric/U.S. for Canada or Mexico
• Metric-only for export
For the correct ICU3 service cluster part number, based on the choices above, see Table 1.
Service Cluster Configurations
Service clusters are configured as follows:
• TACHOMETER — All service clusters include a functional tachometer gauge even if it wasn’t originally
specified on the vehicle.
• RESET BUTTON — All service clusters include the trip mileage reset button. The button will function on
the service cluster even if the original cluster did not include this option.
• AIR PRESSURE GAUGES — The only replaceable gauges on the ICU3 are the air pressure gauges. If
any other gauge in the cluster fails, the cluster must be replaced.
• TELLTALES — Each of the nine optional warning lights located in the top row at the center of the ICU3
consists of a lamp and a small plastic bezel with the warning message printed on it. The plastic bezel covering the lamp is referred to as a "telltale" lens.
Sterling Parts Technical Bulletin, February 2008
Page 1
54-012
ICU3 Service Clusters
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Sterling Parts
Technical Bulletin
A-Line
L-Line
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Cargo
Acterra
Condor
Though service clusters come with lamps in all warning light locations, only the warning lights wired for the
original cluster will illuminate when the ICU3 service cluster is plugged in to the main cab harness. Bulbs
for warning lights that are not used do not need to be removed from the cluster.
The service cluster does not include the top row telltales; these must be removed from the old cluster
and placed in the same positions in the service cluster. This can be done without disassembling the
ICU3. Using a pair of needlenose pliers or a similar tool, grab the exposed tab at the top of the telltale slot
(from the back) and carefully pull the telltale out from the top of the ICU.
Choosing the Correct Service Cluster
All service ICU3 clusters are standard with speedometer, tachometer, hourmeter, and a tripmeter with a reset
button. Choose the correct service cluster based on the following three criteria.
Service Cluster Configuration
All L-Line and A-Line service clusters come with air pressure gauges, which are standard original equipment.
Acterra service clusters do not come with air pressure gauges, which are optional. When installing a service
cluster in an Acterra vehicle, remove the air gauges from the old cluster or order new air gauges, then install
them in the replacement cluster.
See Table 1 and Table 2.
Cluster Description and Service Cluster Part Numbers
Vehicle
Acterra,
L-Line/
A-Line
Options
U.S./Metric
Metric/U.S.
Metric Only
With Transmission Temperature Gauge
VDO A2C53102223
VDO A2C53102225
VDO A2C53102224
Without Transmission Temperature
Gauge
VDO A2C53102220
VDO A2C53102222
VDO A2C53102221
M-B Engine With Transmission
Temperature Gauge
VDO 1 911 222 321S VDO 1 911 222 345S VDO 1 911 222 338S
M-B Engine Without Transmission
Temperature Gauge
VDO 1 911 222 297S VDO 1 911 222 314S VDO 1 911 222 307S
Table 1, Cluster Description and Service Cluster Part Numbers
Sterling Acterra ICU3 Cluster Service Parts
Description
Panel Surround, Taupe, w/ switch cutout
A22-48832-000
Panel Surround, Taupe, without switch
A22-48832-001
Panel Surround, WDGRN, w/switch cutout
A22-48832-003
Panel Surround, WDGRN, without switch
A22-48832-004
Mask/Lens Assy., w/o Reset Button
VDO/2 332 920 081S
Mask/Lens Assy., with Reset Button
VDO/2 332 920 098S
Reset Button
VDO/3 732 010 035S
Quick Connect Air Fitting, 90 Deg. 5/32 TBG.
VDO/3 959 000 011S
Quick Connection, 90 Deg., 1/4 Tubing
Page 2
Part Number
LEG/3009 00 05 00 (early production)
Socket LED-Amber
VDO/4 990 100 007S
Socket LED-Red
VDO/4 990 100 014S
Sterling Parts Technical Bulletin, February 2008
54-012
ICU3 Service Clusters
>
>
A-Line
L-Line
>
Cargo
Acterra
Condor
Sterling Parts
Technical Bulletin
Sterling Acterra ICU3 Cluster Service Parts
Description
Part Number
Primary Air Pressure Gauge-U.S.
VDO/2 311 610 004S
Primary Air Pressure Gauge-Metric
VDO/2 311 610 028S
Secondary Air Pressure Gauge-U.S.
VDO/2 311 610 011S
Secondary Air Pressure Gauge-Metric
VDO/2 311 610 035S
Lamp Backlighting, Tan (5 Pack)
VDO/4 923 090 025S
Lamp Indicator, Black (5 Pack)
VDO/2 013 001 814S
Lens, Transfer Case Shift OK
24-00909-000
Lens, Transfer Case High Range
24-00909-001
Lens, Mirror Heat
24-00909-002
Lens, Suspension Air
24-00909-003
Lens, Utility Light
24-00909-004
Lens, Road Light
24-00909-005
Lens, Fog Light
24-00909-006
Lens, Spot Light
24-00909-007
Lens, Engine Fan
24-00909-008
Lens, Case Neutral
24-00909-009
Lens, Do Not Shift
24-00909-010
Lens, ISO Symbol for Water in Fuel
24-00909-011
Lens, Washer Fluid
24-00909-012
Lens, Message
24-00909-013
Lens, Optimized Idle
24-00909-014
24-00909-015
Lens, Wheel Spin
24-00909-016
Lens, Trailer Auxiliary
24-00909-017
Lens, ECAS Transfer
24-00909-018
Lens, EBS Warning
24-00909-019
Lens, Differential Lock
24-00909-020
Lens, Axle Lock
24-00909-021
Lens, Forward Differential Locked
24-00909-022
Lens, Rear Differential Locked
24-00909-023
Lens, Interaxle Differential Locked
24-00909-024
Lens, Retarder Overheating
24-00909-025
Lens, Roof Light
24-00909-026
Lens, Strobe Light
24-00909-027
Lens, Work Light
24-00909-028
Lens, Auxiliary Air
24-00909-029
Sterling Parts Technical Bulletin, February 2008
Page 3
54-012
ICU3 Service Clusters
>
>
Sterling Parts
Technical Bulletin
A-Line
L-Line
>
Cargo
Acterra
Condor
Sterling Acterra ICU3 Cluster Service Parts
Description
Part Number
Lens, PTO Engaged
24-00909-030
Lens, Transfer Case in Low Range
24-00909-031
Lens, Stop Engine
24-00909-032
Lens, ECAS Fail
24-00909-033
Lens, No Step
24-00909-034
24-00909-035
Lens, Check Trans
24-00909-036
Lens, Shift Inhibit
24-00909-037
Lens, Low Fuel
24-00909-038
Lens, Reduce Speed
24-00909-039
Lens, HI Idle
24-00909-040
Lens, Pump Roll
24-00909-041
Lens, Low Water
24-00909-042
Lens, Wheel Lock
24-00909-043
Lens, Range Inhibit
24-00909-044
Lens, Lane Searching
24-00909-045
Lens, Stop Request
24-00909-046
Lens, Brake
24-00909-047
Lens, Side Door
24-00909-048
Lens, Service Transmission
24-00909-049
Lens, Check AC
24-00909-050
Lens, ABS
24-00909-051
Lens, Low Brake Fluid
24-00909-052
Lens, Wait to Start
24-00909-053
Lens, CTIS Overspeed
24-00909-054
Lens, Battery On
24-00909-055
Table 2, Sterling Acterra ICU3 Cluster Service Parts
Page 4
Sterling Parts Technical Bulletin, February 2008
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TSB/Document ID: sp54012
Replacement Service Bulletin Number:
MFR Communication Date: 2018-02-26
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT ADAPTIVE/MOBILITY
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