Field S erv ic e B ulletin
Tr u c k s

Vo l v o Tru c k s N o r t h A m e r i c a
Greensboro, NC USA

Date

10.2012

Group

No.

Release

284 038 01

Page

1(2)

Engine Coolant Thermostat Software Update
(SPN 1659 FMI 7)
VN, VHD, VAH
D11H, D16H

FS B 284-038, E ngi ne Coolant Thermostat
S oftware Update (S P N 1659 FMI 7)
(Octo ber 2012 )

Info rmat i on
Diagnostic Trouble Code (DTC) SPN 1659 FMI 7 was designed to indicate an open
thermostat and the coolant system is not operating correctly. During severe weather
conditions and heavy duty applications, an SPN 1659 FMI 7 DTC may display during engine
warm-up and indicate an issue even when the cooling system is performing normally. This
condition has resulted in unnecessary replacement of the coolant thermostat. If an SPN 1659
FMI 7 DTC occurs under the conditions described in this bulletin, the DTC can be removed
from the diagnostics by updating the MID 128 Software.

R e q u i r e d To o l s
Premium Tech Tool version 1.12.302 or higher
Communications Cable 88890154 or 88890034
Communications Adapter 88890020 or 88890180 with firmware 1.12.0.2 or higher

P roc edu re
You must read and understand the precautions and guidelines in Service Information,
Function Group 20, “Engine Safety Practices” 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.
N o t e : Always ensure the most recent software version for Premium Tech Tool (PTT) is
installed on your PC.

Service personnel: Please circulate, read and initial

Service
Manager

Wa r r a n t y
Admini strator

P V 7 2 9 - FSB284-038_V

Wo r k s h o p
Foreman

S e r v i c e Te c h n i c i a n s

USA56124

Vo l v o Tru c k s N o r t h A m e r i c a
Field Service Bulletin

Date
10.2012

Group

No.

Release

284

038

01

1 Connect Premium Tech Tool (PTT) to the vehicle diagnostic connector using the 9 pin
diagnostic communications cable 88890154 or 88890034 and communications adapter
88890020 or 88890180. Connect the PC to a functional LAN network connection and a
reliable power source (the Intermediate Storage function may be used).
2 Turn ignition key to the “ON” position.
3 Log in to PTT and proceed to the Identification of Vehicle/Machine panel.
4 Once the vehicle has been identified and selected start VCADS Pro.
5 Enter the job card information.
6 From the VCADS Pro Operations Menu select:
a. 2 - Engine, Engine Mounting and Equipment
b. 2841-22-03-03 – MID 128 ECU, programing
c. Reprogram control unit with complete software package.
N o t e : If you lose power or your network connection during programming you will need to
start programming over from the beginning.
7 When programming is complete, exit the programming operation.

R ei mbu rs ement
Thi s repai r may be el igi bl e for rei mbu rs ement i f a produ c t fa il ure w as e x pe rien c ed
w i t h i n t i m e a n d m i l e a g e l i m i t s o f t h e a p p l i c a b l e Wa r r a n t y c o v e r a g e . R e i m b u r s e m e n t
is obta ine d v i a the no rmal c l aim handl i ng proc es s .
C l a i m Ty p e ( u s e d o n l y w h e n u p l o a d i n g f r o m t h e D e a l e r B u s .
Sys.)

W

Labor Code
Primary Labor Code

28434-2-00
0.4 hrs.

Caus al P art

3092091

VOLVO Trucks North America engages in a comprehensive program of testing and
evaluating to provide the best possible product. VOLVO Trucks North America however, is
not committed to, or liable for updating existing vehicles.

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