Mitsubishi Outlander (2013+). Manual - part 323

 

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Mitsubishi Outlander (2013+). Manual - part 323

 

 

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-173

NOTE: 

*

1: The shown voltage is the average value where an analogue voltmeter is used (because a digital 

voltmeter may not be able to indicate the average voltage stably).

NOTE: 

*

2: If the battery is fully charged, the output reading may be incorrect.

CHECK CHART FOR RESISTANCE AND 
CONTINUITY BETWEEN TERMINALS

1. Turn the ignition switch to "LOCK" (OFF) position.

2. Disconnect the engine-ECU connector.

3. Measure the resistance and check for continuity 

between the terminals of the engine-ECU 
harness-side connector while referring to the 
check chart.

NOTE: 

.

1. When measuring resistance and checking 

continuity, a harness for checking contact pin 
pressure should be used instead of inserting a 
test probe.

2. Checking need not be carried out in the order 

given in the chart.

CAUTION

If the terminals that should be checked are mis-
taken, or if connector terminals are not correctly 
shorted to earth, damage may be caused to the 
vehicle wiring, sensors, engine-ECU and/or ohm-

meter. Be careful to prevent this!

4. If the ohmmeter shows any deviation from the 

standard value, check the corresponding sensor, 
actuator and related electrical wiring, and the 
repair or replace.

82

BAT1

Power supply

Ignition switch: "ON"

System voltage

84

C/RL

Throttle valve control 
servo relay

Ignition switch: "LOCK" (OFF)

0 

− 0.1 V

Ignition switch: "ON"

1 V or less

87

AFS

Air flow sensor

Engine: Gradually increase the speed

Voltage increase in 
response to 
revving

89

ATS

Intake air temperature 
sensor

Ignition switch: "ON" When the intake air 

temperature is 
−20°C

3.8 

− 4.4 V

When the intake air 
temperature is 0

°C

3.2 

− 3.8 V

When the intake air 
temperature is 20

°C

2.3 

− 2.9 V

When the intake air 
temperature is 80

°C

0.4 

− 1.0 V

92

IGN

Ignition switch 

− IG

Ignition switch: "ON"

System voltage

96

FP/R

Fuel pump relay

Ignition switch: "ON"

System voltage

Engine: Idle operation

1 V or less

97

AFS5

Applied voltage to the 
air flow sensor

Ignition switch: "ON"

4.9 

− 5.1 V

102

AC/R

A/C compressor relay

• Engine: Idle operation

• A/C switch: "OFF" → "ON"

(when the compressor is active)

System voltage 

→ 

1 V or less.

104

BACK

Backup power supply

Ignition switch: "LOCK" (OFF)

System voltage

105

ST

Ignition switch 

− ST

Engine: Cranking

System voltage

106

STRL

Starter relay

Engine: Cranking

System voltage

Engine: Idle operation

1 V or less

Termin
al No.

Termi
nal 
code

Inspection Item

Check condition (Engine condition)

Normal condition

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-174

5. After repair or replacement, recheck with the 

ohmmeter to confirm that the repair or 
replacement has corrected the problem.

AK502911

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

16 15 14 13 12 11 10 9 8 7 6 5 4 3

2

1

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

BA

Engine-ECU Harness Side Connector

Terminal No.

Terminal code

Inspection Item

Standard value, normal 
condition (Check 
condition)

1 

− 82

DCV1 

− BAT1

Inlet oil feeder control valve

6.9 

− 7.9 Ω (at 20°C)

15 

− 16

ETV+ 

− ETV-

Throttle valve control servo

0.3 

− 80 Ω (at 20°C) 

26 

− 27

WTS 

− WTSE

Engine coolant temperature 
sensor

14 

− 17 kΩ (at −20°C) 

5.1 

− 6.5 kΩ (at 0°C)

2.1 

− 2.7 kΩ (at 20°C) 

0.9 

− 1.3 kΩ (at 40°C) 

0.48 

− 0.68 kΩ (at 60°C) 

0.26 

− 0.36 kΩ (at 80°C) 

34 

− 82

OHFL 

− BAT1

Oxygen sensor (front) heater

4.5 

− 8.0 Ω (at 20°C) 

35 

− 82

OHRL 

− BAT1

Oxygen sensor (rear) heater

4.5 

− 8.0 Ω (at 20°C) 

37 

− 82

PURG 

− BAT1

Purge control solenoid valve

22 

− 26 Ω (at 20°C) 

71 

− body earth

RSG 

− body earth

ECU earth

Continuity (2 

Ω or less)

81 

− body earth

GNDB 

− body earth

83 

− body earth

RSH 

− body earth

93 

− body earth

GNDE 

− body earth

88 

− 89

AFSE 

− ATS

Intake air temperature sensor

13 

− 18 kΩ (at −20°C)

5.3 

− 6.7 kΩ (at 0°C) 

2.3 

− 3.0 kΩ (at 20°C) 

0.30 

− 0.45 kΩ (at 80°C) 

INSPECTION PROCEDURE USING AN 
OSCILLOSCOPE

M1131154503423

The output signals of the sensors and the conditions 
of the actuation signals of the actuators can be 
inspected visually by observing the waveforms on 
the oscilloscope.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-175

INLET CAMSHAFT POSITION SENSOR 
AND CRANK ANGLE SENSOR

Measurement Method

1

2 3

1

2 3

AK502608

Inlet camshaft

position sensor
connector

Crank angle sensor
connector

Oscilloscope

CH1

CH2

AK

1. Disconnect the intake camshaft position sensor 

connector and insert the special tool test harness 
(MB991709) in-between the separated 
connectors. (Always mate all the terminals.)

2. Disconnect the crank angle sensor connector and 

insert the special tool test harness (MB991709) 
in-between the separated connectors.

3. Connect the probe of each channel of the 

oscilloscope to terminal No. 3 of the intake 
camshaft position sensor connector and terminal 
No. 3 of the crank angle sensor connector, 
respectively. 

Alternate Method (Measure at the 
engine-ECU)

1. Disconnect the engine-ECU connector and 

connect the special tool Power plant ECU check 
harness (MB992110) in between.

2. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal CPI (When checking the 
intake camshaft position sensor signal wave 
pattern).

3. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal SGT (When checking the 
crank angle sensor signal wave pattern).

Standard Wave Pattern

Observation condition

Function

Special patterns

Pattern height

Low

Pattern selector

Display

Engine

Idle

AK502609

AC

Standard wave pattern

Crank angle sensor
output wave pattern

Intake camshaft
position sensor
output ware pattern

2 engine revolutions (1 camshaft revolution)

(V)

5

0

5

0

No. 1TDC

No. 3TDC

No. 4TDC

No. 2TDC

(ms)

Description of Wave Patterns

• The inlet camshaft position sensor serves as to 

detect the compression top dead centre of each 

cylinder. By observing this signal simultaneously 
with the crank angle sensor signal, it is possible 
to identify each cylinder.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-176

• The crank angle sensor is used to detect the 

crank angle of each cylinder. While the engine 
revolves for two cycles, 72 pieces of the crank 
angle sensor signal (including any missing) will 
be outputted. 

• The engine ECU carries out the engine control, 

using the fall signal (from 5 to 0 V) of the crank 
angle sensor. The rise signal (from 0 to 5 V) posi-
tion does not affect the control.

Wave Pattern Observation Points

• Verify that the sensor signal frequency increases 

as the engine speed rises.

Examples of Abnormal Wave Pattern

•

AK203243

Example 1
Wave pattern characteristics

Rectangular wave will be outputted while the 

engine is not started.

Cause of problem

Failed sensor interface

•

AK203244

Example 2
Wave pattern characteristics

Wave pattern is displaced in the forward or back-

ward direction.

Cause of problem

Loose timing belt
Abnormal sensing section

INJECTOR

Measurement Method

AKC00025

CH1

AB

Injector 
connector

Oscilloscope

1. Disconnect the injector connector and insert the 

special tool Test harness (MB991658) in-between 
the separated connectors. (Always mate all the 
terminals.)

2. Connect the oscilloscope probe to terminal No. 2 

of the injector connector.

Alternate Method (Measure at the 
engine-ECU)

1. Disconnect the engine-ECU connector and 

connect the special tool Power plant ECU check 
harness (MB992110) in between.

2. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal INJ1 (When checking the 
No. 1 cylinder).

3. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal INJ2 (When checking the 
No. 2 cylinder).

4. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal INJ3 (When checking the 
No. 3 cylinder).

5. Connect the oscilloscope special patterns pickup 

to engine-ECU terminal INJ4 (When checking the 
No. 4 cylinder).

Standard Wave Pattern

Observation conditions

Function

Special patterns

Pattern height

Variable

Variable knob

Adjust while viewing the 
wave pattern

Pattern selector

Display

Engine

Idle

 

 

 

 

 

 

 

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