Mitsubishi Montero (2002-2004). Manual - part 595

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-77

STEP 5. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between engine coolant

temperature sensor connector B-37 (termial No. 1)
and PCM connector D-135 (termial No. 98) because
of open circuit. Then go to Step 11.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 11.

STEP 6. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Replace the PCM. Then go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 11.

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-78

STEP 7. Check the continuity at engine coolant
temperature sensor harness side connector B-37.

(1) Disconnect the connector B-37 and measure at the harness

side.

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

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 10.
NO : Go to Step 8.

STEP 8. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 11.

AK200943

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-37

B-37(B)

AK000235

B-37 HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-79

STEP 9. Check for open circuit between engine coolant
sensor connector B-37 (terminal No. 2) and PCM connector
D-135 (terminal No. 96).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 11.
NO : Repair it. Then go to Step 11.

AK200943

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-37

B-37(B)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-80

STEP 10. Check the engine coolant temperature sensor.
(1) Disconnect the engine coolant temperature sensor

connector B-37.

(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 kiloohms [at −20°C (−4°F)]

5.1

− 6.5 kiloohms [at 0°C (32°F)]

2.1

− 2.7 kiloohms [at 20°C (68°F)]

0.9

− 1.3 kiloohms [at 40°C (104°F)]

0.48

− 0.68 kiloohm [at 60°C (140°F)]

0.26

− 0.36 kiloohm [at 80°C (176°F)]

(4) Apply 3M

ä 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: 29

± 10 N⋅m (22 ± 7 ft-lb)

Q: Is the resistance at the standard value?

YES : Replace the PCM. Then go to Step 11.
NO : Replace the engine coolant temperature sensor. Then

go to Step 11.

STEP 11. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

GROUP 13A, Procedure 6

− Other Monitor

P.13Ab-2

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0118 set?

YES : Retry the troubleshooting.
NO : The inspection is complete.

AK200943

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-37

B-37(B)

AKX01622

AKX01623 AB

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