Mitsubishi Outlander GS45X. Manual — part 809

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-169

Judgement Criterion

• Changes in the intake air temperature is lower

than 1

°C (1.8°F).

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 8

P.13B-11

.

.

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

• Intake air temperature sensor failed.

• ECM failed.

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

STEP 1. Using scan tool MB991958, check data list item 5:
Intake Air Temperature Sensor.

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) Remove the mass airflow sensor from the air intake hose.
(3) Turn the ignition switch to the "ON" position.
(4) Set scan tool MB991958 to the data reading mode for item

5, Intake Air Temperature Sensor.

(5) Heating the sensor using a hair drier.

• The indicated temperature increases.

NOTE: Do not allow it to increase over 80

°

C (176

°

F).

(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Attach the mass airflow sensor.
Q: Is the sensor operating properly?

YES : 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

.

NO : Go to Step 2.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-170

STEP 2. Check the intake air temperature sensor.
(1) Disconnect the intake air temperature sensor connector

A-07.

(2) Remove the mass airflow sensor.
(3) Measure the resistance between intake air temperature

sensor side connector terminal No. 1 and No. 4.

(4) Measure resistance while heating the sensor using a hair

drier.

Standard value:

13

− 17 kΩ [at −20°C (−4°F)]

5.3

− 6.7 kΩ [at 0°C (32°F)]

2.3

− 3.0 kΩ [at 20°C (68°F)]

1.0

− 1.5 kΩ [at 40°C (104°F)]

0.56

− 0.76 kΩ [at 60°C (140°F)]

0.30

− 0.45 kΩ [at 80°C (176°F)]

Q: Is the measured resistance at the standard value?

YES : Replace the mass airflow sensor. Then go to Step 3.
NO : Go to Step 3.

STEP 3. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function

− OBD-II Drive Cycle − Pattern 8

P.13B-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0111 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

.

AK700228

1

2

3 4

AB

Intake air temperature
sensor connector

AK700229AB

Mass airflow
sensor

Intake air
temperature
sensor

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-171

DTC P0112: Intake Air Temperature Circuit Low Input

.

CIRCUIT OPERATION

• Approximately 5 volts are applied to the intake air

temperature sensor output terminal (terminal No.
1) from the ECM (terminal No. 89) via the resistor
in the ECM. The ground terminal (terminal No. 4)
is grounded with ECM (terminal No. 88).

• The intake air temperature sensor is a negative

temperature coefficient type of resistor. When the
intake air temperature rises, the resistance
decreases.

• The intake air temperature sensor output voltage

increases when the resistance increases and
decreases when the resistance decreases.

.

TECHNICAL DESCRIPTION

• The intake air temperature sensor converts the

intake air temperature to a voltage.

• The ECM checks whether this voltage is within a

specified range.

.

DESCRIPTIONS OF MONITOR METHODS

Intake air temperature sensor output voltage is out of

specified range.

.

AK700135

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

3 4

2

1

AB

88

89

4

1

5 V

INTAKE AIR TEMPERATURE SENSOR CIRCUIT

INTAKE AIR TEMPERATURE
SENSOR (INTEGRATED IN
MASS AIRFLOW SENSOR)

VIOLET

BLA

CK-WHITE

A-07

(MU805110)

B-11

ENGINE
CONTROL
MODULE

AK700406

AB

Mass airflow
sensor

A-07 (GR)

Connector: A-07

AK700402AB

ECM

B-11 (GR)

Connector: B-11

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-172

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 Condition

• 2 seconds or more have passed since the engine

starting sequence was completed.

Judgement Criterion

• Intake air temperature sensor output voltage has

continued to be 0.2 volt or lower [corresponding
to an air intake temperature of 115

°C (239°F) or

higher] for 2 seconds.

.

Start

Output voltage < 0.2V

End

No

No

No

Yes

Yes

Yes

Malfunction

Good

Continuous

failure for 2secs

Output voltage > 4.6V

Monitoring

conditions

No

Yes

AK700464