Mitsubishi Montero Sport (2004+). Manual — part 106

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-19

.

CIRCUIT OPERATION
This circuit checks the operation of the vehicle speed
sensor.
When the vehicle moves forward and reverses, the
sensor turns ON and OFF repeatedly.

.

DTC SET CONDITIONS
The vehicle speed signals from the vehicle speed
sensor are not input to the auto-cruise control-ECU
when the vehicle speed is 40 km/h (25 mph) or more.

.

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

• Malfunction of the vehicle speed sensor.

• Damaged harness or connector.

• Malfunction of the auto-cruise control-ECU.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Check the speedometer.
Q: Does the speedometer work normally?

YES : Go to Step 2 .
NO : Check the speedometer circuit and repair or replace

as required. (Refer to GROUP 54, Combination Meter
Assembly

P.54-119

). Then go to Step 6 .

AC004747 AE

CONNECTOR: C-35

C-35 (B)

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-20

STEP 2. Measure the circuit voltage at auto-cruise
control-ECU connector C-35 by backprobing.
(1) Do not disconnect auto-cruise control-ECU connector C-35.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between auto-cruise control-ECU

connector C-35 terminal 10 and ground by backprobing.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage approximately between 8 and 12 volts?

YES : Go to Step 5 .
NO : Go to Step 3 .

STEP 3. Check auto-cruise control-ECU connector C-35 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is the connector damaged?

YES : Repair or replace the damaged components. (Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

). Then go to Step 6 .

NO : Go to Step 4 .

AC202155

2

3

10

11

5

6

13

14

12

4

8

16 15

7

9

1

C-35 (B)

AB

CONNECTOR: C-35

C-35 HARNESS SIDE
CONNECTOR

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

ACX01898AG

C-35 HARNESS CONNECTOR:
HARNESS SIDE

AC202155

2

3

10

11

5

6

13

14

12

4

8

16 15

7

9

1

C-35 (B)

AB

CONNECTOR: C-35

C-35 HARNESS SIDE
CONNECTOR

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-21

STEP 4. Check the harness wire between intermediate
connector C-29 (terminal No. 8) and auto-cruise
control-ECU connector C-35 (terminal No.10).
Q: Is the harness wire between intermediate connector

C-29 (terminal No. 8) and auto-cruise control-ECU
connector C-35 (terminal No.10) in good condition?
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 Malfunction

P.00-7

).

NO : Repair the damaged harness wire. Then g to Step 6 .

STEP 5. Check the diagnostic trouble codes.
Q: Is DTC 12 set?

YES : Replace the auto-cruise control-ECU. (Refer to

P.17-99

). Then go to Step 6 .

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 Malfunction

P.00-7

).

STEP 6. Check the diagnostic trouble codes.
Q: Is DTC 12 set?

YES : Return to Step 1 .
NO : This procedure is complete.

AC004751 AN

CONNECTOR: C-29

4

1

5

7 6

8

9

1

2

C-29: FEMALE SIDE

CONNECTOR

AC202155

2

3

10

11

5

6

13

14

12

4

8

16 15

7

9

1

C-35 (B)

AB

CONNECTOR: C-35

C-35 HARNESS SIDE
CONNECTOR

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-22

DTC14 : Stoplight Switch System

.

AC103739

Stoplight Switch System Circuit

AB

AC004746

CONNECTOR: A-02

HYDRAULIC
UNIT

AD

A-02 (B)

AC004747 AE

CONNECTOR: C-35

C-35 (B)

AC103440AE

CONNECTOR: C-41

C-41

AC004751 AJ

CONNECTOR: C-66

C-66 (B)