Mitsubishi Galant 9G. Manual — part 461
AUTO-CRUISE CONTROL
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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
AC
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)
AB
C-215
C-211
CONNECTORS: C-211, C-215
C-211 HARNESS CONNECTOR:
COMPONENT SIDE
AUTO-CRUISE CONTROL
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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.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line. (Refer to
(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
Then go to Step 4.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-64
STEP 2. Using scan tool MB991958, read the MFI
diagnostic trouble code.
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.
(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
<2.4L engine> or (Refer to GROUP 13B, MFI Diagnosis
−
Diagnostic Function
− How to Read and Erase Diagnostic
) <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
<2.4L engine> or Refer to GROUP 13B,
MFI Diagnosis
− Diagnostic Trouble Code Procedures
− DTC U1108: Combination Meter-ECU CAN
<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
NO : Replace the PCM. [Refer to GROUP 13A, Power
Control Module (PCM)
] <2.4L engine> or
[Refer to GROUP 13B, Power Control Module (PCM)
] <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
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AUTO-CRUISE CONTROL
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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
).
MUT-III
SCAN TOOL
DISPLAY
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
APS
SNS(MAIN)
12
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
06
Stoplight switch
Brake pedal: Depressed
ON
Brake pedal: Released
OFF
CANCEL
CODE
13
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
04
Auto-cruise
control
switch
CANCEL
"CANCEL" switch: ON
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
09
Auto-cruise control
system operation
Auto-cruise control system: active
ON
Auto-cruise control system: Inactive
OFF
IDLE SW SIG 08
Accelerator pedal
position switch
Accelerator pedal: Depressed
OFF
Accelerator pedal: Released
ON
MAIN SW
01
Auto-cruise
control
switch
CRUISE
(MAIN)
"CRUISE" (MAIN) switch: "ON"
ON
"CRUISE" (MAIN) switch: "OFF"
OFF
RESUME
SWITCH
03
Auto-cruise
control
switch
ACC/RES "ACC/RES" switch: ON
ON
"ACC/RES" switch: OFF
OFF
SET SWITCH 02
Auto-cruise
control
switch
COAST/S
ET
"COAST/SET" switch: ON
ON
"COAST/SET" switch: OFF
OFF
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