Mitsubishi Galant 9G. Manual — part 453
AUTO-CRUISE CONTROL
TSB Revision
ENGINE AND EMISSION CONTROL
17-30
STEP 15. Check auto-cruise control switch connector
C-302 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 16.
NO : Repair or replace the faulty connector. (Refer to
GROUP 00E, Harness Connector Inspection
). Install the air bag module (driver’s side).
(Refer to GROUP 52B, Air Bag Modules and Clock
Spring
STEP 16. Check the auto-cruise control switch.
(1) Remove auto-cruise control switch. (Refer to
(2) Measure the resistance between terminal 2 and terminal 3
when each of the "CRUISE" (MAIN), "COAST/SET",
"ACC/RES" and "CANCEL" switch is pressed.
Q: Is the resistance within specifications?
YES : Install the air bag module (driver’s side). (Refer to
GROUP 52B, Air Bag Modules and Clock Spring
NO : Replace the auto-cruise control switch. (Refer to
). Install the air bag module (driver’s side).
(Refer to GROUP 52B, Air Bag Modules and Clock
Spring
AC305235AB
C-302 (Y)
CONNECTOR: C-302
C-302 HARNESS
CONNECTOR:
COMPONENT SIDE
CLOCK
SPRING
SWITCH POSITION
SPECIFIED CONDITION
"CRUISE" (MAIN) switch
"OFF"
Open circuit
"CRUISE" (MAIN) switch
"ON"
Less than 2 ohms
"CANCEL" switch ON
Approximately 100
Ω
"ACC/RES" switch ON
Approximately 887
Ω
"COAST/SET" switch ON Approximately 300
Ω
1 2 3
AC203822AB
OFF
OFF
OFF
OFF
ON
ON
ON
ON
CAN
MAIN
RES
SET
2
3
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-31
STEP 17. Using scan tool MB991958, read the 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) Set scan tool MB991958 to read the diagnostic trouble
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC 15 set?
YES : 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 18.
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
STEP 18. Using scan tool MB991958, read the 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) Set scan tool MB991958 to read the diagnostic trouble
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC 15 set?
YES : Return to Step 1.
NO : The procedure is complete.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-32
DTC 21: Cancel Latch Signal System
.
DTC SET CONDITIONS
The PCM communicates cancellation retention infor-
mation between the two microprocessors. This DTC
is set when cancellation retention information con-
tains inconsistency.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CODE TO BE
SET ARE:)
Malfunction of the PCM.
DIAGNOSIS
Replace the PCM. [Refer to GROUP 13A, Power Control Mod-
ule (PCM)
] <2.4L engine> or [Refer to GROUP
13B, Power Control Module (PCM)
] <3.8L
engine>. Then check that diagnostic trouble code 21 is not set.
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-33
DTC 22: Stoplight Switch System
AC305711
BATTERY
RELAY
BOX
WHITE
WHITE
GREEN-
BLACK
BLACK
BLACK
JOINT
CONNECTOR (1)
GREEN
STOPLIGHT
GREEN
LIGHT GREEN-
BLACK
POWERTRAIN CONTROL MODULE (PCM)
STOPLIGHT
SWITCH
GREEN
AB
Stoplight Switch System Circuit
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