Mitsubishi Galant 9G. Manual — part 451

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-22

STEP 6. Check intermediate connector C-29, auto-cruise
control switch connector C-302 and clock spring
connectors C-303 and C-306 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 7.
NO : Repair or replace the faulty connector. (Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

). Install the air bag module (driver’s side).

(Refer to GROUP 52B, Air Bag Modules and Clock
Spring

P.52B-369

). Then go to Step 18.

AC305232

C-29

CONNECTOR: C-29

AC

C-29 MALE SIDE CONNECTOR

AC305236

C-306 HARNESS

CONNECTOR:

COMPONENT SIDE

C-303 HARNESS

CONNECTOR:

COMPONENT SIDE

C-302 HARNESS

CONNECTOR:

COMPONENT SIDE

AB

C-302 (Y)

C-303 (GR)

C-306

CONNECTORS: C-302, C-303, C-306

CLOCK

SPRING

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-23

STEP 7. Check the harness wire between PCM connector
B-19 terminal 12 and auto-cruise control switch connector
C-302 terminal 2 for damage.
Q: Are the harness wires in good condition?

YES : Go to Step 8.
NO : Repair the damaged harness wire and install the air

bag module (driver’s side). (Refer to GROUP 52B, Air
Bag Modules and Clock Spring

P.52B-369

). Then go

to Step 18.

STEP 8. Check the clock spring.
Refer to GROUP 52B, Air Bag Modules and Clock Spring

P.52B-375

.

Q: Is the clock spring in good condition?

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

). Install

the air bag module (driver’s side). (Refer to GROUP
52B, Air Bag Modules and Clock Spring

P.52B-369

).

Then go to Step 18.

NO : Replace the clock spring and install the air bag

module (driver’s side). (Refer to GROUP 52B, Air Bag
Modules and Clock Spring

P.52B-369

). Then go to

Step 18.

AC305710

B-19 HARNESS

CONNECTOR:

COMPONENT SIDE

AC

B-19 (B)

CONNECTOR: B-19

AIR CLEANER

PCM

AC305235AB

C-302 (Y)

CONNECTOR: C-302

C-302 HARNESS

CONNECTOR:

COMPONENT SIDE

CLOCK

SPRING

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-24

STEP 9. Measure the ground voltage at auto-cruise control
switch connector C-302 by backprobing.
(1) Do not disconnect auto-cruise control switch connector

C-302.

(2) Turn the ignition switch to the "ON" position.
(3) Turn the "CRUISE" (MAIN) switch to the "ON" position.

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

switch connector C-302 terminal 3 and ground by
backprobing.

(5) Turn the "CRUISE" (MAIN) switch to the "OFF" position.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage 0.5 volt or less?

YES : Go to Step 15.
NO : Go to Step 10.

AC305235AB

C-302 (Y)

CONNECTOR: C-302

C-302 HARNESS

CONNECTOR:

COMPONENT SIDE

CLOCK

SPRING

1 2

AC209264

3

AB

C-302 HARNESS

CONNECTOR:

HARNESS SIDE

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-25

STEP 10. Measure the ground voltage at PCM connector
B-20.
(1) Disconnect all the connectors from the PCM.

(2) Connect special tool MB991923 between the PCM and the

body-side harness connector.

(3) Turn the ignition switch to the "ON" position.
(4) Turn the "CRUISE" (MAIN) switch to the "ON" position.

AC305710

B-20 HARNESS

CONNECTOR:

COMPONENT SIDE

AD

B-20

CONNECTOR: B-20

AIR CLEANER

PCM

AC209793AL

SPECIAL TOOL 23-PIN CONNECTOR
WITHOUT RED TAPE
(PCM CONNECTOR B-20)

B-20

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

PCM

MB991923

BODY SIDE
HARNESS