Mitsubishi L200. Manual - part 196

TROUBLESHOOTING

DIESEL FUEL

13A-580

59

No. 2 exhaust gas 
temperature sensor 
(catalyst 
temperature)
<Euro5>

Engine: Idling after 
warming up the 
engine

Catalyst temperature: 
200 

°C

4.0 

− 4.6 V

Catalyst temperature: 
400 

°C

2.4 

− 3.0 V

Catalyst temperature: 
600 

°C

1.2 

− 1.8 V

Catalyst temperature: 
800 

°C

0.5 

− 1.1 V

60

No. 3 exhaust gas 
temperature sensor 
(DPF temperature) 
<Euro5>

Engine: Idling after 
warming up the 
engine

DPF temperature: 200 
°C

4.0 

− 4.6 V

DPF temperature: 400 
°C

2.4 

− 3.0 V

DPF temperature: 600 
°C

1.2 

− 1.8 V

DPF temperature: 800 
°C

0.5 

− 1.1 V

62

No. 1 intake air 
temperature sensor

Ignition switch: ON

Intake air temperature: 
−20 °C

4.0 

− 4.6 V

Intake air temperature: 
0 

°C

3.1 

− 3.7 V

Intake air temperature: 
20 

°C

2.1 

− 2.7 V

Intake air temperature: 
40 

°C

1.2 

− 1.8 V

Intake air temperature: 
60 

°C

0.6 

− 1.2 V

Intake air temperature: 
80 

°C

0.2 

− 0.8 V

63

Engine coolant 
temperature sensor

Ignition switch: ON

Engine coolant 
temperature: 

−20 °C

4.4 

− 4.9 V

Engine coolant 
temperature: 0 

°C

4.4 

− 4.6 V

Engine coolant 
temperature: 20 

°C

3.3 

− 3.9 V

Engine coolant 
temperature: 40 

°C

2.4 

− 3.0 V

Engine coolant 
temperature: 60 

°C

1.5 

− 2.1 V

Engine coolant 
temperature: 80 

°C

0.9 

− 1.5 V

64

Rail pressure 
sensor

Engine: Idling (after warning up)

1.15 

− 1.75 V

66

Camshaft position 
sensor

Engine: Cranking

0.1 

− 3.0 V*

Engine: Idling

0.5 

− 1.5 V*

Terminal 
No.

Check item

Inspection condition (engine status)

Normal condition:

TROUBLESHOOTING

DIESEL FUEL

13A-581

67

Crank angle sensor Engine: Cranking

1.5 

− 4.5 V*

Engine: Idling

2.5 

− 3.5 V*

68

Crank angle sensor 
power supply

Ignition switch: ON

4.9 

− 5.1 V

69

Camshaft position 
sensor power 
supply

Ignition switch: ON

4.9 

− 5.1 V

70

Rail pressure 
sensor power 
supply

Ignition switch: ON

4.9 

− 5.1 V

71

Exhaust gas 
recirculation 
position sensor 
power supply

Ignition switch: ON

4.9 

− 5.1 V

72

Manifold absolute 
pressure sensor 
power supply

Ignition switch: ON

4.9 

− 5.1 V

93

Throttle position 
sensor power 
supply

Ignition switch: ON

4.9 

− 5.1 V

94

Exhaust differential 
pressure sensor 
power supply 
<Euro5>

Ignition switch: ON

4.9 

− 5.1 V

101

Battery

Ignition switch: ON

System voltage

102
103

Backup power 
supply

Ignition switch: "LOCK" (OFF)

System voltage

104

Ignition switch-IG

Ignition switch: ON

System voltage

110

Fuel filter pressure 
switch <Vehicles for 
Russia and 
Morocco>

Engine: Idling (after warning up)

System voltage

• Engine: Acceleration

• Squeeze the fuel hose with one's fingers at 

the inlet side of the fuel filter.

1 V or less

111

Ignition switch-ST

Engine: Cranking

System voltage

114

Throttle valve 
control servo 
(positive)

Engine: Stopped from idling speed

Voltage changed for few 
seconds

115

Exhaust gas 
recirculation motor 
(positive)

Engine: Idling (after warning up)

1 

− 3 V*

Engine: 3,500 r/min (after warning up)

1.0 V or less

118

Engine control relay Ignition switch: "LOCK" (OFF)

System voltage

Ignition switch: ON

1 V or less

Terminal 
No.

Check item

Inspection condition (engine status)

Normal condition:

TROUBLESHOOTING

DIESEL FUEL

13A-582

120

Glow control unit 
<Euro5>

Engine: Idling

Engine coolant 
temperature: lower than 
40

°C

System voltage

Engine coolant 
temperature: lower than 
80

°C

1 V or less

121

Alternator G 
terminal <Euro5>

• Engine: Idle operation after warm-up

• Head lamp switch: OFF → ON

• Rear window defogger switch: OFF → ON

Voltage increase

125

Blower switch
<Euro5>

Engine Idle speed 
(after warning up)

Blower fan: OFF

1 V or less

Blower fan: ON

System voltage

126

Glow diagnostic 
signal <Euro5>

Engine: Idling

Engine coolant 
temperature: lower than 
40

°C

System voltage

Engine coolant 
temperature: lower than 
80

°C

1 V or less

127

Power steering fluid 
pressure switch

Engine: Idling

When steering wheel is 
stationary

System voltage

When steering wheel is 
turned

1.0 V or less

129

Throttle valve 
control servo 
(negative)

Engine: Stopped from idling speed

Voltage changed for few 
seconds

131

Suction control 
valve (positive)

Engine: Idling

5 

− 6 V*

Engine: Acceleration

Decreases

134

Accelerator pedal 
position sensor 
(sub) power supply

Ignition switch: ON

4.9 

− 5.1 V

135

Accelerator pedal 
position sensor 
(sub)

Ignition switch: ON

Release the accelerator 
pedal

0.2 

− 0.8 V

Depress the accelerator 
pedal fully

2.0 V or more

138

Battery current 
sensor <Euro5>

The battery is being discharged.

• Engine: Cranking

The value changes by the 
value less than 3.5 V.

The battery is being charged.

• Leave the ignition switch being in the ON 

position for several minutes, and then after 
the engine start.

The value changes by the 
value more than 3.5 V

*2

140

Air flow sensor

Engine: Gradually increase the speed

Voltage increase

141

Vehicle speed 
sensor

• Ignition switch: ON

• Move the vehicle forward slowly

0 

⇔ 5 V (Changes 

repeatedly)

148

Battery current 
sensor power 
supply <Euro5>

Ignition switch: ON

4.9 

− 5.1 V

Terminal 
No.

Check item

Inspection condition (engine status)

Normal condition:

TROUBLESHOOTING

DIESEL FUEL

13A-583

NOTE: *:The average voltage is shown when an 
analog voltmeter is used (because the average volt-
age might not be shown stably when digital voltmeter 
is used).

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. The chart procedures do not have the particu-

lar order.

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.

5. After repair or replacement, recheck with the 

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

149

Accelerator pedal 
position sensor 
(main) power supply

Ignition switch: ON

4.9 

− 5.1 V

150

Accelerator pedal 
position sensor 
(main)

Ignition switch: ON

Release the accelerator 
pedal

0.7 

− 1.3 V

Depress the accelerator 
pedal fully

4.0 V or more

Terminal 
No.

Check item

Inspection condition (engine status)

Normal condition: