TSB-23-13-003

SUBJECT:
No:
DESCRIPTION CORRECTION FOR EVAPORATIVE EMISSION
CONTROL SYSTEM AND MULTIPORT FUEL INJECTION
SOLENOID VALVE – SERVICE MANUAL REVISION
TSB-23-13-003
DATE:: May 2023
MODEL::2018-21 Outlander PHEV
CIRCULATE TO:
[ ] GENERAL MANAGER
[ X ] PARTS MANAGER
[ X ] TECHNICIAN
[ X ] SERVICE ADVISOR
[ X ] SERVICE MANAGER
[ X ] WARRANTY PROCESSOR
[ ] SALES MANAGER
PURPOSE
This TSB provides service description correction in the applicable Service Manual sections.
AFFECTED VEHICLES
2018-2021 Outlander PHEV
AFFECTED MANUAL
• 2018 Outlander PHEV Technical Information Manual, Groups 13 and 17
• 2018-2021 Outlander PHEV Service Manual, Groups 13 and 17
PROCEDURE
Please use the following chart as a guide to replace the indicated pages in the affected
manual, Group 13 Fuel and Group 17 Engine, Motor and Emission Control.
Applicable Manual
2018
OUTLANDER PHEV
Technical
Information Manual
Pub. No.
MSSP-227B-2018
2018 OUTLANDER
PHEV
Service Manual
MSCD-027B-2018
2019 OUTLANDER
PHEV
Service Manual
MSCD-027B-2019
2020 OUTLANDER
PHEV
Service Manual
MSCD-027B-2020
2021 OUTLANDER
PHEV
Service Manual
MSCD-027B-2021
Applicable Title
FUEL
└ MULTIPORT FUEL SYSTEM (MFI)
└ ACTUATOR
└ FUEL TANK SOLENOID VALVE
FUEL
└ MULTIPORT FUEL SYSTEM (MFI)
└ EVAPORATIVE EMISSION SYSTEM
LEAK MONITOR AND EVAPORATIVE EMISSION PURGE FLOW MONITOR
└ FUEL TANK SOLENOID VALVE
Contents
Attached
sheet 2
ENGINE, MOTOR AND EMISSION CONTROL
└ EMISSION CONTROL
└ EVAPORATIVE EMISSION CONTROL SYSTEM
ENGINE, MOTOR AND EMISSION CONTROL
└ EMISSION CONTROL
└ EVAPORATIVE EMISSION CONTROL SYSTEM
└ GENERAL INFORMATION (EVAPORATIVE EMISSION SYSTEM)
Attached
sheet 4
Attached
sheet 3
Attached
sheet 5
Copyright 2023, Mitsubishi Motors North America, Inc.
The information contained in this bulletin is subject to change. For the latest version of this document, go to the Mitsubishi
Dealer Link, MEDIC, or the Mitsubishi Service Information website (www.mitsubishitechinfo.com).
5/3/2023
1 of 7
(5285/MSB22M13_17-501A)
Attached sheet 2
MULTIPORT FUEL SYSTEM (MFI)
13A-10
ACTUATOR
FUEL TANK SOLENOID VALVE
Fuel tank solenoid valve
From fuel tank
To bypass valve
ACG02448AB
The fuel tank solenoid valve, an ON/OFF type solenoid valve,
is mounted near the fuel tank on the floor bottom side.
The fuel tank solenoid valve is installed between the bypass
valve and the fuel tank attached to the evaporative emission
canister, and opens/closes the evaporated gas passage.
The ECM turns the fuel tank solenoid valve ON to open the
evaporated gas passage at the time of refueling and fuel tank
internal high pressure purge control. The ECM also controls
whether the fuel tank solenoid valve is ON/OFF for the 
evaporative emission purge flow monitor and evaporative 
emission leakage monitor.

From MFI relay
ECM terminal voltage V
ECM
12
0
Fuel tank solenoid valve
Fuel tank solenoid
valve: Open
Fuel tank solenoid
valve: Close
ON
OFF
Time sec
ACH04843 AB
.
BYPASS VALVE
Evaporative emission
canister
To evaporative
emission
purge solenoid
From fuel tank
solenoid valve
Bypass valve
ACH04567AB

The bypass valve, an ON/OFF type solenoid valve, is installed
on the evaporative emission canister.
The bypass valve is installed between the evaporative 
emission canister and the fuel tank solenoid valve, and shuts
off or opens the purge piping.
The ECM turns the bypass valve OFF at refueling to introduce
evaporated gas into the evaporative emission canister, and
turns the bypass valve ON during the fuel tank internal high
pressure purge control to shut off the inflow of evaporated gas
to the evaporative emission canister. The ECM also controls
whether the fuel tank solenoid valve is ON/OFF for the 
evaporative emission purge flow monitor and evaporative 
emission leakage monitor.
ECM
Fuel tank solenoid valve
BCH04843AA
5/3/2023
2 of 7
(5285/MSB22M13_17-501A)
Attached sheet 3(1/3)
MULTIPORT FUEL SYSTEM (MFI)
13A-24
EVAPORATIVE EMISSION SYSTEM LEAK MONITOR AND EVAPORATIVE EMISSION PURGE FLOW MONITOR
2. Overview of the evaporative emission system
leak monitor

Switching valve: Open (OFF)
Atmospheric
pressure
Evaporative
emission
leak detection
pump
Reference orifice
Canister pressure
(Diameter 0.45 mm) sensor
: Lower than
barometric pressure
Evaporative
: Barometric pressure
emission
canister
ACH04544 AB

Switching valve: Close (ON)
Atmospheric
pressure
Evaporative
emission
leak detection
pump
Reference orifice
Canister pressure
(Diameter 0.45 mm) sensor
: Lower than
barometric pressure
Evaporative
: Barometric pressure
emission
canister
ACH04545 AB
After the electric motor switch is turned OFF, and when the fuel
state stabilizes (soaks) after a predetermined time (5 to 8.5
hours) has elapsed, the evaporative emission system leak
monitor is executed.
Compares the reference pressure when the closed space with
the inner diameter of 0.45 mm (0.018 in.) reference orifice in
the ELCM is depressurized with the evaporative emission leak
detection pump and the pressure when the evaporative emission system (the fuel tank and the evaporative emission canister section) is depressurized, and judges the existence of
evaporative emission system leaks.
Fuel tank internal pressure is measured with the fuel tank pressure sensor and the internal pressure of the evaporative emission canister is measured with the canister pressure sensor.
Leak diagnosis is performed by separating the diagnosis area
into the fuel tank side and the evaporative emission canister
side at the bypass valve as the boundary.
After starting monitoring, when the evaporative emission canister pressure changes by a predetermined value or more when
the fuel tank solenoid is turned from the closed (OFF) to open
(ON) state with the switching valve closed (ON), leak diagnosis
only on the evaporative emission canister side is performed,
assuming that there is no leak in the fuel tank, and fuel tank
internal pressure is retained while soaking.
When the fuel tank solenoid is turned from the closed (OFF) to
open (ON) state, if the internal pressure of the evaporative
emission canister does not change, it cannot be judged that
there is no leak on the fuel tank side, so the leak diagnosis of
the evaporative emission system including the fuel tank is performed.
The range of the closed space to be depressurized is changed
by opening/closing the fuel tank solenoid, bypass valve, and
switching valve of the ELCM, which allows identifying the location of the leak.

 Fuel tank solenoid: Open (ON)
(OFF) 
 Bypass valve: Open (ON)
 Switching valve: Close (ON)
 Evaporative emission purge solenoid: Close (OFF)
 Evaporative emission leak detection pump: ON

Attached sheet 13(3/3)
5/3/2023
3 of 7
(5285/MSB22M13_17-501A)
Attached sheet 3(2/3)
MULTIPORT FUEL SYSTEM (MFI)
13A-25
EXHAUST GAS RECIRCULATION CONTROL

 Fuel tank solenoid: Close (OFF)
(ON) 
 Bypass valve: Close (OFF)
 Switching valve: Close (ON)
 Evaporative emission purge solenoid: Close (OFF)
 Evaporative emission leak detection pump: ON
In addition to leak diagnosis, the functions of evaporative emission-related parts (the fuel tank solenoid, bypass valve, ELCM,
evaporative emission purge solenoid and fuel tank pressure
sensor) are checked in monitoring as well.
Because monitoring is not performed when refueling, it is not
monitored when refueling is started by pressing the fuel tank
filler door switch or when the fuel filler lid is forcibly opened.
EXHAUST GAS RECIRCULATION CONTROL
Refer to GROUP 17  Emission Control  
Exhaust Gas Recirculation System P.17-14.
M2132016000431
REFUEL CONTROL AND FUEL TANK PRESSURE
CONTROL
In order to prevent evaporated gas generated in the
fuel tank and the evaporated gas generated during
refueling from being released into the atmosphere, a
closed fuel tank system that controls the pressure in
the fuel tank and the adsorption of evaporated gas to
the canister is adopted for PHEV models.
5/3/2023
4 of 7
M2132000600014
In addition, the electric fuel filler lid system is
adopted in order to enable refueling only when the
fuel tank internal pressure is reduced to atmospheric
pressure.
(5285/MSB22M13_17-501A)
Attached sheet 3(3/3)

Purge control
solenoid valve
(Close: OFF)
Fuel tank solenoid
valve
(Open: ON)
ECM
Engine
Leak detection pump
Canister pressure
sensor
Fuel tank differential
pressure sensor
Evaporative
emission
canister
Bypass valve
(Open: OFF)
Fuel tank
Evaporative
leak check
module
(ELCM)
Switching valve
(Close: ON)
：Detects range

Purge control
solenoid valve
(Close: OFF)
Fuel tank solenoid
valve
(Close: OFF)
ECM
Engine
Leak detection pump
Canister pressure
sensor
Fuel tank differential
pressure sensor
Bypass valve
(Close: ON)
Fuel tank
Evaporative
leak check
module
(ELCM)
Switching valve
(Close: ON)
：Detects range
5/3/2023
Evaporative
emission
canister
BCLA1301AD
5 of 7
(5285/MSB22M13_17-501A)
Attached sheet 4
17-13
ENGINE, MOTOR AND EMISSION CONTROL
EMISSION CONTROL
EVAPORATIVE EMISSION CONTROL SYSTEM
M2171000200664

MFI relay
Evaporative
emission
canister
Fuel tank
solenoid
valve
Bypass
valve
Fuel tank
Fuel tank differential pressure sensor
Battery
Fuel tank pressure sensor
Mass airflow sensor
Intake air temperature sensor
Manifold absolute pressure sensor
Engine coolant temperature sensor
Crankshaft position sensor
Throttle position sensor
ECM
ACH04578 AB

Fuel tank
solenoid
valve
BCH04578AB
5/3/2023
6 of 7
(5285/MSB22M13_17-501A)
Attached sheet 5
ENGINE, MOTOR AND EMISSION CONTROL
EMISSION CONTROL
SYSTEM DIAGRAM

MFI relay
Evaporative
emission
canister
Fuel tank
solenoid
valve
Bypass
valve
Fuel tank
Fuel tank differential pressure sensor
Battery
Fuel tank pressure sensor
Mass airflow sensor
Intake air temperature sensor
Manifold absolute pressure sensor
Engine coolant temperature sensor
Crankshaft position sensor
Throttle position sensor
ECM
ACH04578AB

Fuel tank
solenoid
valve
BCH04578AB
5/3/2023
7 of 7
(5285/MSB22M13_17-501A)