Mitsubishi Outlander GS45X. Manual — part 930

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-653

DTC SET CONDITIONS

Lgic Flow Chart

Check Condition

• Ignition switch is "ON" position.

Judgment Criterion

• ECM detects an error in communication between

ECM and TCM.

.

OBD-II DRIVE CYCLE PATTERN

None.

.

TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)

• CAN line harness damage or connector damage.

• ECM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

AK604369

Start

Yes

Yes

Yes

No

No

No

Continuous failure

for specified time

Malfunction

End

Good

Monitoring
conditions

Communication status

fails

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-654

• MB991827: USB Cable

• MB991910: Main Harness A

STEP 1. Using scan tool MB991958, diagnose CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line normal?

YES : Go to Step 2 .
NO : Repair the CAN bus line. Refer to GROUP 54C,

Diagnosis

− Can Bus Diagnostics Table

P.54C-17

.

STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Read the DTC.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P1590 set?

YES : Replace the ECM. When the ECM is replaced,

register the ID code. Refer to GROUP 42B, Diagnosis
− ID Codes Registration Judgment Table <Vehicles

with KOS>

P.42B-15

or GROUP 42C, Diagnosis

− ID

Codes Registration Judgment Table <Vehicles with
WCM>

P.42C-10

.

NO : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-15

.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-655

DTC P1603: Battery Backup Line Malfunction

.

TECHNICAL DESCRIPTION

The ECM checks the open circuit of battery backup
line.

NOTE: When the system detects an open circuit in
the battery backup line, it makes 1 failure judgment
of other diagnostic trouble codes (DTCs).

.

DESCRIPTIONS OF MONITOR METHODS

Battery backup line voltage is under specified value.

AK700160

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

104

2

7.5A

AB

WHITE

WHITE

RED-BLA

C

K

B-11

36

FUSIBLE LINK

RELAY BOX
(ENGINE
COMPARTMENT)

ENGINE
CONTROL
MODULE

BATTERY BACKUP CIRCUIT

BATTERY
BACKUP

AK700402AB

ECM

B-11 (GR)

Connector: B-11

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-656

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Not applicable

.

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• Engine starting sequence was completed.

• Battery positive voltage is higher than 10 volts.

Judgement Criterion

• Battery backup line voltage has continued to be 6

volts or lower for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

None.

.

TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are: )

• Connector damage.

• Harness damage.

• ECM failed.

AK700499

Good

Malfunction

Start

End

No

No

Yes

Yes

Yes

No

Monitoring

conditions

Continuous

failure for 2secs

Circuit voltage

< 6V