PI 0866

Mack Trucks
Greensboro, NC USA
Service Program
Trucks
Date
Group
No.
Release
Page
6.2016
284
866
01
1(4)
Engine Control Module (ECM),
Reprogramming
Cummins ISL
LR
PI0866, Engine Control Module (ECM),
Reprogramming
(June 2016)
Certain MACK LR trucks built from 11/01/2015 to 03/31/2016, and equipped with a Cummins
ISL engine may experience improper operation of the engine cooling fan while the A/C
system is in operation. Reprogramming of Multiple Cummins Engine Control Module (ECM)
parameters are required to resolve this issue. Follow the repair procedure outlined in this
Product Improvement (PI) to reprogram the parameter settings in the ECM.
Note: The Cummins ISL engine parameter reprogramming must be performed at an
authorized MACK dealership only.
Note: This bulletin does not apply to MACK Trucks Australia.
PV729-PI0866
USA76755
Mack Trucks
Service Program
Date
6.2016
Group
No.
Release
284
866
01
Tools
Cummins INSITE tool.
ECM Reprogramming Procedure
You must read and understand the precautions and guidelines in Cummins Service
Information, "General Safety Practices, Engines" before performing this procedure. If you
are not properly trained and certified in this procedure, ask your supervisor for training
before you perform it.
DANGER
Do not attempt to repair or service this vehicle without having sufficient training, the
correct service literature and the proper tools. Failure to follow this could make the vehicle
unsafe and lead to serious personal injury or death.
Note: Verify Service Program eligibility by checking the Service Program status in Vehicle
Data Administration (VDA).
1 Park the vehicle on a level surface.
2 Apply the parking brake.
3 Place the transmission in neutral or park.
4 Install the wheel chocks.
W7086748
5 Connect to vehicle using Cummins INSITE.
6 Go to Feature and Parameters.
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Mack Trucks
Service Program
Date
6.2016
Group
No.
Release
284
866
01
7 Select these parameters and change them to the settings in the table below.
New Parameter Settings
Steps
Settings
a
Go to the Fan Control sections
b
Set the Air Conditioning Pressure Switch Input to “Enable”
c
Set Minimum Fan On Time for Air Conditioning Pressure Switch to “60”
d
Then Go to the SAE J1939 Multiplexing Section
e
Set Air Conditioning Pressure Switch to “Enable”
f
Set Source address to “17”
8 Save programmable parameters to the ECM.
9 Ensure all Cooling Fan and A/C functions work correctly after the parameters are
changed.
10 Clear all Diagnostic Trouble Codes (DTCs) and disconnect from INSITE.
11 Remove the wheel chocks.
W7086759
Page
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Mack Trucks
Service Program
Date
6.2016
Group
No.
Release
284
866
01
This repair will need to be filed as a warranty repair to MACK Trucks for Reimbursement.
Reimbursement
This repair is covered by an authorized Service Program.
Reimbursement is obtained through the normal claim
handling process.
UCHP
Reimbursement
Claim Type (used only when uploading from the Dealer
Bus. Sys.)
B
Recall Status
Vehicle inspected, repair not required
1- Inspected OK
Vehicle repaired per instruction
2- Modified per
instruction
Labor Code
Primary Labor Code
2841–22–09–09
0.5 hrs
Time to take charge and determine campaign status
1700–16–01–01
0.3 hrs
Causal Part
3092091
SCC Code
S7057
Expiration Date
01-JUN-2017
Note: Take Charge Time is not included in the Labor Code for this operation. Take charge
may be eligible but can only be used once per repair visit. If vehicle is having other warranty
repairs performed, take charge should be charged to the warranty repair, otherwise take
charge can be charged to this service program.
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