Sp18-35 Service Bulletin/Repair Instructions

SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
1(8)
First Release
P20EE (diagnostic troubleshooting code) SOLUTION - NOX CONVERSION EFFICIENCY

Prevost vehicles

B13R (9700 us/can)

DESCRIPTION

For the vehicles on which a notification for SP18-35 exists, perform the following checklist and operations. It

has been determined that these vehicles had the code (DTC) P20EE activated.

DO NOT perform this special bulletin on a specific vehicle unless a notification exists, otherwise, no

reimbursement will be awarded.

MODEL YEAR(S) AND VEHICLES INVOLVED

NOTICE TO SERVICE CENTERS

Verify vehicle eligibility by checking warranty bulletin status with SAP or via ONLINE WARRANTY SYSTEM

available on Service / Warranty tab of Prevost website.
H3-41, H3-45 coaches

Model Year : 2017 - 2019
GHG17 or OBD18 compliant vehicles
H3-45 VIP motorhomes
From 2PCH33494HC713735 up to 2PCH33492KC710467 (not incl.)
Model Year : 2017 - 2019

X3-45 coaches
GHG17 or OBD18 compliant vehicles
Model Year : 2017 - 2019
From 4RKG33491H9737417 up to 4RKG33490K9737576 (not incl.)
X3-45 coaches

Model Year : 2017 - 2019

X3-45 VIP commercial use
GHG17 or OBD18 compliant vehicles
Model Year : 2017 - 2019
From 2PCCS3495HC736180 up to 2PCCS3498KC736407 (not incl.)
X3-45 VIP motorhomes

Model Year : 2017 - 2019

VOLVO 9700

Model Year : 2017 - 2019
Writer: EL
GHG17 or OBD18 compliant vehicles

From 3CET2V927H5184392 up to 3CET2V926K5194709 incl.
SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
2(8)
MATERIAL

Part required

Part No.
Description
Qty
22677399
GASKET, DEF INJECTION NOZZLE
1
21376801
SEALING PLATE
1
22677399
21376801
NOTE

Material can be obtained through regular channels.
Writer: EL
SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
3(8)
DANGER

Park vehicle safely, apply parking brake, stop the engine. Prior to working on the vehicle, set the

ignition switch to the OFF position and trip the main circuit breakers equipped with a trip button. On

Commuter type vehicles, set the battery master switch (master cut-out) to the OFF position.
IMPORTANT NOTES

DO NOT perform WB18-04 or WB18-84 EMS & ACM SOFTWARE UPDATE before the

following checklist, otherwise useful diagnostic codes and monitor data could be erased.

Wb18-04 for Prevost coaches, Wb18-84 for Volvo 9700
Any troubleshooting labor of active DTCs (Diagnostic Troubleshooting Codes) other than

P20EE is considered as a separate operation of the RO (repair order) and cannot be charged

to this special bulletin.
PROCEDURE
Vehicle identification

H3

X3



Writer: EL
V.I.N (short) : __ ̶ __ __ __ __
SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
4(8)
OPERATIONS TO BE PERFORMED IN ADVANCE BY THE SERVICE ADVISOR

Ask the customer whether he/she noticed an abnormal consumption of oil or coolant.

Search all relevant information concerning the aftertreatment system or severe turbo failure in the history of

repairs of the vehicle and record. Attach to the repair order.

Also check if SP18-35 has already been performed on that particular coach. If this is the case, do not perform

SP18-35 once again, contact the Technical Publications for instructions. You can send a message to the

Technical Publications functional mailbox: technicalpublications_Prev@volvo.com

NOTE/DETAILS:
checklist
#

1
PASS

OR FAIL
P
F
 
INITIALS

AND

DATE
Confirm your PTT software is up to date, see www.premiumtechtool.com . Connect PTT

and check the diagnostic codes related to EMS and ACM. Take a screenshot of the

DTCs and attach to the repair order.

Confirm that code P20EE is present (whether active or inactive). If P20EE is not

present, do not continue with this checklist.
NOTE/DETAILS:

2
Take a screenshot of the last SCR efficiency evaluation (Test screen 2589‐08‐03‐05),

attach to the repair order.

NOTE/DETAILS:

3
Check if there are leaks at the Charge Air Cooler (soapy water test). Check if there are

leaks of EGR, exhaust gas (between turbo and SCR converter). Note any presence of

soot. Any repair is considered as a separate operation of the RO (repair order) and

cannot be charged to this special bulletin.
Note: Try to clear exhaust clamps while keeping in mind the state of the insulating

blankets to avoid damage because the heat can make them fragile over time.

NOTE/DETAILS:
Writer: EL
SP18-35
Special Bulletin

4
Date
Expiration
Release
Page
11.2018
11.2020
1
5(8)
Remove DEF doser and perform all dosing amount tests (Test screen 2589-08-03-05)

and record the results.

NOTE/DETAILS:

5
Test the concentration of DEF and record the result. Tool: refractometer # 88890105.
NOTE/DETAILS:

6
Check inside the flex pipe downstream of the DEF injector for any accumulation of DEF

crystals, attach pictures of crystal accumulations if applicable. Remove any crystal

accumulation if applicable. If the situation is normal (PASS) reinstall the DEF injector

with two new seals.

NOTE/DETAILS:

7
Check if dashboard REGENERATION REQUEST telltale is illuminated. If not, go to step

8. If illuminated, check which type of regeneration is requested (Test screen 2589-0803-02) by EMS (marked with a blue circle).
For any regeneration request different than Sulfur Regeneration, perform the requested

regeneration type before proceeding to step 8.

NOTE/DETAILS:

8
Perform one Sulfur Regeneration (Test screen 2589-08-03-02).
NOTE/DETAILS:

Do a test drive of at least 1 hour to 1 ½ hour at highway speed (45 minutes in each

direction).

NOTE/DETAILS:

9
10
Connect PTT and take a screen shot of the last four (4) SCR efficiency evaluations

(Test screen 2589‐08‐03‐05).

a) Make sure that the EMS has been able to carry out a new evaluation (see

example below showing the latest evaluation on top of the previous

evaluations).

b) If SCR efficiency value on the most recent evaluation is >85% vehicle may be

released (Typical new SCR is expected to get >90% SCR efficiency). This

special bulletin can then be closed. Please, attach this filled checklist to the

repair order in SAP.

c) Authorization for the replacement of the SCR converter. If SCR efficiency

value is less than 85%, an analysis of this checklist with the notes/results must
Writer: EL
SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
6(8)
be done in order to allow the replacement of the SCR converter. Scan and send

this checklist and all the relevant documents, photos, etc. to the Technical

Publications functional mailbox: technicalpublications_Prev@volvo.com

Please indicate in the “subject line”: SP18-35 and the short V.I.N. as in the example

below…
NOTE/DETAILS:
Example of SCR performance test

Before the road test
Writer: EL
After the road test (most recent evaluation=105%)
SP18-35
Special Bulletin

Date
Expiration
Release
Page
11.2018
11.2020
1
7(8)
ADDITIONAL NOTES/DETAILS:
Writer: EL
SP18-35
Special Bulletin

PARTS / WASTE DISPOSAL
Date
Expiration
Release
Page
11.2018
11.2020
1
8(8)
Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)
ESTIMATED TIME

The time required to perform this special bulletin is between 4 & 5 ¾ hours.

OTHER

VBC Bulletin
N/A
Fail Code
04.04-1
Defect Code
9
Syst. Cond
B
Causal Part
21970125
Access all our Service Bulletins on
http://techpub.prevostcar.com/en/

or scan the QR-Code with your smart phone.
Prevost engages in a continuous program of testing and evaluating to provide the best possible product. Prevost, however, is not committed

to, or liable for updating existing products.
Writer: EL

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