MAS003711

TECHNICAL SERVICE OPERATIONS
MAS003711 RU 23-37
RAPID UPDATE
FROM: Maserati TSO
TO: Maserati Network
Rapid Update 645
MC20 – Knock Sensor Check
DATE: JULY 26 2023
Certain Maserati MC20 (M240) MY22 MY23 listed in MODISCS+ are involved in a Rapid Update
to carry out a KNOCK sensor cleaning procedure.
Vehicles transported overseas may experience humidity accumulation on the sensor covers
due to the configuration of the engine hood. This, in turn, may cause the sensors not to respond
correctly, leading to problems after starting the engine.
We remind you that all the Rapid Updates must be performed within the first workshop visit,
regardless of the Mandatory setting set in Modis, as required by Maserati policies.
Also, for vehicles in Stock Dealer / PDI, it is necessary to carry out all action operations before
delivery to the end customer, as required by the White Book and explicitly reported in the Predelivery checklist.
Please read and review this bulletin first before starting the procedure.
Contact your Regional AfterSales Manager (RAM) or the Technical Support Helpdesk if you
have any questions. ([email protected])
Thank You for your continued support and cooperation.
Maserati Americas
Aftersales Dept.
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003711
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
1
TECHNICAL SERVICE OPERATIONS
Procedure
1. Always check ModisCS+ to see if the vehicle is involved in this action and if it has not been
previously performed.
2. Start the Engine.
3. Warm up the engine at idle for about 10 (ten) minutes, depending on the environmental
conditions
Note: Please follow the indication of the cluster to check the state of the engine.
4. Connect the EVO and continue to “Vehicle view” and wait until it has been fully updated.
5. Clear only the DTCs related to the ECM module: ▪ ECM ► DTCs ► Clear ECU DTCs
Note: The only DTC allowed is P0350 - Ignition Coil Primary/Secondary Circuit.
If other DTCs are present: Open a BOL as “support request” for further assistance.
6. ECM Diagnosis ► Active Diagnosis ► GPF Service Regeneration
Preconditions:
▪ Engine ON
▪ Gear in N or P position
▪ Engine at operating temperature (70°C < Coolant Temperature < 108°C)
▪ No pedal pressed (accelerator and brake)
▪ Vehicle Speed = 0
▪ Not excessive temperature of Exhaust component (GPF < 850°C)
The Malfunction Indicator Light (MIL) will “come ON” when the
ignition switch is in the ON position and then “Shut OFF” soon after
the engine is started (the MIL may not shut OFF immediately).
If the MIL starts flashing: The GPF service regeneration Is ready to be
performed.
If the MIL stays ON: Stop the GPF Service Regeneration
By following Steps 7 through 10 then open a BOL as “support request”
for further assistance.
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003711
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
2
Wait 5 minutes.
Warning: During this phase, the engine will run at 3000 rpm.
TECHNICAL SERVICE OPERATIONS
7.
8. Interrupt the procedure after 5 (five) minutes by pressing the brake pedal.
9. Stop the engine.
10. Disconnect the EVO.
11. Procedure complete.
Warranty Claim
Fill in the relative Warranty Claims as follows:
Description
Code
Rapid Update Number
645
Warranty Code
23
Fault Code
063
Component Code
Operation Code
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003711
1.90.005
1.90.005.A (0.5h)
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
3