Mitsubishi Galant (2004+). Manual - part 841

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-181

STEP 6. Measure the sensor supply voltage at engine
coolant temperature sensor harness side connector B-104.
(1) Disconnect the connector B-104 and measure at the

harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 1 and ground.

• Voltage should be between 4.5 and 4.9 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.5 and 4.9 volts?

YES : Go to Step 8.
NO : Go to Step 7.

STEP 7. Check harness connector B-22 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

AK303815

CONNECTOR: B-104

B-104 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK000234 AR

2 1

B-104 HARNESS
CONNECTOR:
COMPONENT SIDE

AK303016

104

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-182

STEP 8. Check the continuity at engine coolant
temperature sensor harness side connector B-104.
(1) Disconnect the connector B-104 and measure at the

harness side.

(2) Check for the continuity between terminal No. 2 and

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 11.
NO : Go to Step 9.

STEP 9. Check harness connector B-21 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

AK303815

CONNECTOR: B-104

B-104 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK000235

B-104 HARNESS
CONNECTOR:
COMPONENT SIDE

AK303018

54 53 52 51

62 61 60 59 58

69 68 67 66 65 64

75 74 73 72 71

82 81 80 79 78 77

CONNECTOR: B-21

PCM

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

B-21 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-183

STEP 10. Check for harness damage between engine
coolant temperature sensor connector B-104 (terminal No.
2) and PCM connector B-21 (terminal No. 69).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

AK303815

CONNECTOR: B-104

B-104 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303018

54 53 52 51

62 61 60 59 58

69 68 67 66 65 64

75 74 73 72 71

82 81 80 79 78 77

CONNECTOR: B-21

PCM

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

B-21 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-184

STEP 11. Check the engine coolant temperature sensor.
(1) Disconnect the engine coolant temperature sensor

connector B-104.

(2) Remove the engine coolant temperature sensor.

(3) With the temperature sensing portion of engine coolant

temperature sensor immersed in hot water, check
resistance.

Standard value:

− 17 kΩ [at −20°C (−4°F)]

5.1

− 6.5 kΩ [at 0°C (32°F)]

2.1

− 2.7 kΩ [at 20°C (68°F)]

0.9

− 1.3 kΩ [at 40°C (104°F)]

0.48

− 0.68 kΩ [at 60°C (140°F)]

0.26

− 0.36 kΩ [at 80°C (176°F)]

(4) Apply 3M

 AAD part number 8731 or equivalent on the

screw section of the engine coolant temperature sensor.

(5) Install the engine coolant temperature sensor, and tighten

to the specified torque.

Tightening torque: 30

± 9 N⋅m (22 ± 7 ft-lb)

Q: Is the measured resistance at the standard value?

YES : Go to Step 12.
NO : Replace the engine coolant temperature sensor. Then

go to Step 14.

AK303815

CONNECTOR: B-104

B-104 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

AKX01622

AKX01623 AB

Content .. 839 840 841 842 ..