NHTSA ID Number: 10117702
Manufacturer Communication Number: 167-B1602-12
TSB/Document Date: 2017-09-14
Summary
SB-16-015 Enhanced DCU (Dosing Control Unit) software has been released.Illumination of the check engine light. The DCU may falsely detect an issue and record any of the 3 following DTC?s in the DCU. P142A(DEF pump temperature sensor - Out of range) P204B(DEF pressure sensor ? Rationality) P20A1(Reverting valve for DEF pump stuck close) In rare cases, the completion of the after-run process might be mistakenly aborted. This occurs when the ignition key is cycled back on and then off prior to after-run completion. If this occurs when ambient temperatures are below freezing and the urea is allowed to fully freeze, internal damage to the DEF pump may occur. Once damaged, urea could migrate into the DEF pump electrical connector and SCR harness resulting in corrosion. This corrosion could result in detection of any combination of SCR(Selective Catalyst Reductant) DTC?s including but not limited to: P142A(DEF pump temperature sensor - Out of range) P208A(DEF pump motor circuit - Open load) P208B(DEF pump motor - Functional) The enhanced DCU software prevents the after-run process from being aborted prior to completion.
TECHNICAL SERVICE
BULLETIN
Group:
Bulletin No:
Issue Date:
Reference:
11-ENGINE
SB-16-015
7-14-2016
HMM-160701-J1
DCU SOFTWARE UPDATE
SUBJECT VEHICLES: 11MY-17MY Conventional Trucks (238, 258, 268, or 338)
Note: This service bulletin is provided as technical information and is not authorization for a
warrantable repair.
OVERVIEW:
Enhanced DCU (Dosing Control Unit) software has been released to address the following
conditions:
Illumination of the check engine light. The DCU may falsely detect an issue and record any of the 3
following DTC’s in the DCU.
P142A(DEF pump temperature sensor - Out of range)
P204B(DEF pressure sensor – Rationality)
P20A1(Reverting valve for DEF pump stuck close)
In rare cases, the completion of the after-run process might be mistakenly aborted. This occurs
when the ignition key is cycled back on and then off prior to after-run completion. If this occurs
when ambient temperatures are below freezing and the urea is allowed to fully freeze, internal
damage to the DEF pump may occur. Once damaged, urea could migrate into the DEF pump
electrical connector and SCR harness resulting in corrosion. This corrosion could result in
detection of any combination of SCR(Selective Catalyst Reductant) DTC’s including but not limited
to:
P142A(DEF pump temperature sensor - Out of range)
P208A(DEF pump motor circuit - Open load)
P208B(DEF pump motor - Functional)
The enhanced DCU software prevents the after-run process from being aborted prior to
completion.
NOTICE: If corrosion is found in the DEF pump electrical connector and SCR harness connector,
both the DEF pump and harness will require replacement.
TECHNICAL SERVICE
BULLETIN
Group:
Bulletin No:
Issue Date:
Reference:
11-ENGINE
SB-16-015
7-14-2016
HMM-160701-J1
REPAIR PROCEDURE
1. Connect a battery charger to the vehicle and your laptop to maintain a proper state of charge
during the reprogramming sequence.
2. Verify that the DXII has software version 1.1.16.5 (DBFile 2.5.16.18)or later.
3. Turn the starter switch to the “ON” position. Update the DCU to the latest software level
using the Hino Diagnostic eXplorer II (Hino DX2). Refer to the following table for the
appropriate software part number for the application.
SOFTWARE INFORMATION
Description
Model Year
New Software Part No.
DCU Software
17MY
89550-E0241
DCU Software
16MY
89550-E0182
DCU Software
11MY-15MY
89550-E0142
4. Proceed to the final inspection section to complete this Technical Service Bulletin (TSB).
TECHNICAL SERVICE
BULLETIN
Group:
Bulletin No:
Issue Date:
Reference:
11-ENGINE
SB-16-015
7-14-2016
HMM-160701-J1
FINAL INSPECTION:
1. To complete this software update procedure, review the TSB and confirm the following:
When reprogramming the DCU, DTC’s may have inadvertently been set in other control
modules. Using the Hino DX2, ensure all codes have been cleared from these modules prior to
releasing the truck back to the customer.
NOTE: This procedure is provided as technical information and is not an authorization for a
warranty repair.
CLAIM APPLICATION:
* Reimbursable in accordance within the terms and policies of the Hino Truck limited
warranties.
DCU Software Update:
a) Labor charge: 0.8 hours
b) Warranty code: 86667
c) Trouble code: 98
d) Operation code: 86650AOT
e) Original failed part: 9999999999
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TSB/Document ID: 167-B1602-12
Replacement Service Bulletin Number:
MFR Communication Date: 2016-07-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM:SOFTWARE
MFR Component System:
MFR Component Subsystem:
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