Mitsubishi Montero Sport (2004+). Manual — part 104

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-11

DIAGNOSTIC TROUBLE CODE CHART

M1172002200228

Check according to the inspection chart that is
appropriate for the diagnostic trouble code.

DIAGNOSTIC TROUBLE
CODE NO.

INSPECTION ITEM

REFERENCE PAGE

11

Auto-cruise vacuum pump drive system

P.17-12

12

Vehicle speed sensor system

P.17-18

14

Stoplight switch system

P.17-22

15

Auto-cruise control switch system

P.17-34

16

Auto-cruise control-ECU system

P.17-42

17

Throttle position sensor, Idle position signal
system

P.17-43

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-12

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC 11: Auto-cruise Vacuum Pump Drive System

Auto-cruise Vacuum Pump Drive System Circuit

AC004746

CONNECTOR: A-02

HYDRAULIC
UNIT

AD

A-02 (B)

AC004747 AE

CONNECTOR: C-35

C-35 (B)

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

17-13

.

CIRCUIT OPERATION
This circuit activates the vacuum pump used to
accelerate/decelerate, set, and cancel the vehicle
speed.
The auto-cruise control-ECU controls the control
valve, release valve, and motor by turning the tran-
sistor in the ECU on and off.

.

DTC SET CONDITIONS
Any drive signal for the release valve, control valve
or motor is not input to the auto-cruise control-ECU.

.

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

• Malfunction of the auto-cruise vacuum pump.

• Damaged harness or connector.

• Malfunction of the auto-cruise control-ECU.

AC103440AE

CONNECTOR: C-41

C-41

AUTO-CRUISE CONTROL

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ENGINE AND EMISSION CONTROL

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DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Measure the output 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 and the

auto-cruise control main switch to the "ON" position.

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

connector C-35 terminal 7 and ground by backprobing.

• Voltage should be battery positive voltage.

[When decelerating with the "SET" switch while driving
at constant speed (Release valve open).]

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

connector C-35 terminal 8 and ground by backprobing.

• Voltage should be battery positive voltage.

[When decelerating with the "SET" switch while driving
at constant speed. (Control valve open).]

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

connector C-35 terminal 16 and ground by backprobing.

• Voltage should be battery positive voltage.

(When the motor is stopped during a constant road
speed).

(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are all of the above values satisfied?

YES : Go to Step 6 .
NO : Go to Step 2 .

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

ACX01897

C-35 HARNESS CONNECTOR:
HARNESS SIDE

AI