Mitsubishi Galant 9G. Manual - part 461

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-62

CIRCUIT OPERATION

The PCM detects "CRUISE" (MAIN) switch "ON" sig-
nal to illuminate the "CRUISE" indicator light on the
combination meter.

COMMENT

Connector(s), wiring harness in the CAN bus line
between the PCM and the combination meter, power
supply to the PCM, the combination meter, the PCM
may be defective.

AC305209AB

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

COMPONENT SIDE

AC305710

B-19 HARNESS

CONNECTOR:

COMPONENT SIDE

B-19 (B)

CONNECTOR: B-19

AIR CLEANER

PCM

AC305232AO

CONNECTORS: C-01, C-02, C-03, C-29, C-101

C-29

C-01

C-101

C-03

C-02

C-01 AND C-03

HARNESS CONNECTOR:

COMPONENT SIDE

C-02 HARNESS

CONNECTOR:

COMPONENT SIDE

C-29 MALE SIDE

CONNECTOR

C-101 HARNESS

CONNECTOR:

COMPONENT SIDE

AC305720

C-215 HARNESS CONNECTOR:

COMPONENT SIDE

JUNCTION BLOCK

(FRONT VIEW)

C-215

C-211

CONNECTORS: C-211, C-215

C-211 HARNESS CONNECTOR:

COMPONENT SIDE

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-63

TROUBLESHOOTING HINTS

• Malfunction of the combination meter.

• Damaged harness or connector.

• Malfunction of the PCM.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.

(Refer to

P.17-11

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line. (Refer to

P.17-11

(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is the check result satisfactory?

YES : Go to Step 2
NO : Repair the CAN bus lines. (Refer to GROUP 54C,

Diagnosis

− Can Bus Diagnostic Chart

P.54C-14

Then go to Step 4.

AC305412

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-64

STEP 2. Using scan tool MB991958, read the MFI
diagnostic trouble code.

CAUTION

(Refer to

P.17-11

(2) Turn the ignition switch to the "ON" position.
(3) Check for MFI system diagnostic trouble code (Refer to

GROUP 13A, MFI Diagnosis

− Diagnostic Function − How

to Read and Erase Diagnostic Trouble Code

P.13A-6

)

<2.4L engine> or (Refer to GROUP 13B, MFI Diagnosis

−

Diagnostic Function

− How to Read and Erase Diagnostic

Trouble Code

P.13B-6

) <3.8L engine>.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC U1108 set?

YES : Refer to GROUP 13A, MFI Diagnosis

− Diagnostic

Trouble Code Procedures

− DTC U1108: Combination

Meter-ECU CAN Communication Time Out

P.13A-958

<2.4L engine> or Refer to GROUP 13B,

MFI Diagnosis

− Diagnostic Trouble Code Procedures

− DTC U1108: Combination Meter-ECU CAN

Communication Time Out

P.13B-1003

<3.8L engine>.

Then go to Step 4.

NO : Go to Step 3.

STEP 3. Retest the system.
Q: Does the "CRUISE" indicator light illuminate when the

"CRUISE" (MAIN) switch is turned "ON"?
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.00-14

NO : Replace the PCM. [Refer to GROUP 13A, Power

Control Module (PCM)

P.13A-1140

] <2.4L engine> or

[Refer to GROUP 13B, Power Control Module (PCM)

P.13B-1192

] <3.8L engine>. Then go to Step 4.

STEP 4. Retest the system.
Q: Does the "CRUISE" indicator light illuminate when the

"CRUISE" (MAIN) switch is turned "ON"?
YES : The procedure is complete.
NO : Return to Step 1.

AC305412

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-65

DATA LIST REFERENCE TABLE

M1172002400471

CAUTION

• When shifting the selector lever to "D" range, apply the brakes should be applied so that the vehi-

cle does not move forward.

• Driving tests always need two persons: one driver and one observer.

NOTE: *:After the inspection is completed, disconnect the throttle position sensor connector, and then delete
the diagnostic trouble code using use of scan tool MB991958. (Refer to

P.17-11

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

APS
SNS(MAIN)

Accelerator pedal
position sensor (main)

Ignition
switch:
"ON"

Accelerator pedal: Released

700

− 1,300 mV

Accelerator pedal: Gradually
depressed

Increases in
response to the
pedal depression
stroke

Accelerator pedal: Fully
depressed

4,000 mV or more

BRAKE SW

Stoplight switch

Brake pedal: Depressed

Brake pedal: Released

OFF

CANCEL
CODE

Cancel code

Ignition switch: "ON"

The cancel code,
which set when the
auto-cruise control
system was
cancelled at the
last time, is set
again.

CANCEL
SWITCH

Auto-cruise
control
switch

CANCEL

"CANCEL" switch: ON

"CANCEL" switch: OFF

OFF

CLUTCH SW 07

Transmission range
switch

Transmission range switch: "P" or "N" ON
Transmission range switch: Other than
above

OFF

CRUISE

Auto-cruise control
system operation

Auto-cruise control system: active

Auto-cruise control system: Inactive

OFF

IDLE SW SIG 08

Accelerator pedal
position switch

Accelerator pedal: Depressed

OFF

Accelerator pedal: Released

MAIN SW

Auto-cruise
control
switch

CRUISE
(MAIN)

"CRUISE" (MAIN) switch: "ON"

"CRUISE" (MAIN) switch: "OFF"

OFF

RESUME
SWITCH

Auto-cruise
control
switch

ACC/RES "ACC/RES" switch: ON

"ACC/RES" switch: OFF

OFF

SET SWITCH 02

Auto-cruise
control
switch

COAST/S
ET

"COAST/SET" switch: ON

"COAST/SET" switch: OFF

OFF

Content .. 459 460 461 462 ..