Mitsubishi Montero Sport (2004+). Manual - part 114

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-51

STEP 7. Check the harness wire between PCM connector 
C-91 (terminal No.79) and auto-cruise control-ECU 
connector C-35 (terminal No.2) for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Is the harness wire between PCM connector C-91 

(terminal No.79) and auto-cruise control-ECU connector 
C-35 (terminal No.2) damaged?
YES : Repair the damaged harness wire. Then go to Step 

10 .

NO :  Go to Step 8 .

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

AC202188

PCM

78

72

90

73

81

74

80

93 92

84 83
95 94

82

85

75

86

96

88

76

89

77

97

87

98

6

79
91

CONNECTOR: C-91

C-91 (GR)

AB

89
98

88
97

76 77

87

86

83
94

84
95

85

96

80
92

81
93

79

78
90 91

82

74

71 72 73

75

C-91: HARNESS CONNECTOR

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-52

STEP 8. 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 2 and ground by backprobing.

• Voltage should measure between 4.0 and 5.5 volts. 

(When accelerator pedal is depressed).

• Voltage should measure between 2.5 volts or less. 

(When accelerator pedal is released).

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are the voltage within specifications?

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 :  Go to Step 9 .

STEP 9. Check the diagnostic trouble codes.
Q: Is DTC 17 set?

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

P.17-99

). Then go to Step 10 .

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 10. Check the diagnostic trouble codes.
Q: Is DTC 17 set?

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

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

AC201986

C-35 HARNESS CONNECTOR:
HARNESS SIDE 

AC

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-53

SYMPTOM CHART

M1172002300418

SYMPTOM

INSPECTION 
PROCEDURE 
NO.

REFERENCE 
PAGE

Communication with scan tool 
MB991958 is not possible

Communication with all systems is 
not possible

-

GROUP 13A, 
Symptom 
Procedures - 
Inspection 
Procedure 1 

P.13A-716

Communication with auto-cruise 
control-ECU only is not possible

1

P.17-54

Auto-cruise control is not 
cancelled.

When brake pedal is depressed

2

P.17-62

When selector lever is moved to "N" 
range 

3

P.17-71

When "CANCEL" switch is turned 
ON

4

P.17-77

Auto-cruise control cannot be set.

5

P.17-77

Hunting (repeated acceleration and deceleration) occurs at the set 
vehicle speed.

6

P.17-81

Auto-cruise control indicator light inside combination meter does not 
illuminate. (However, auto-cruise control is normal.)

7

P.17-84

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-54

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with Scan Tool MB991958 is not Possible 
(Communication with the Auto-cruise Control-ECU Only is not Possible.)

Auto-cruise Control-ECU Power Supply. Ground and Data Link Circuit