Mitsubishi Galant (2004+). Manual - part 182

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-19

STEP 2. Measure the power supply voltage at auto-cruise 
control switch connector C-302 by backprobing.

(1) Remove the air bag module (driver’s side). (Refer to 

GROUP 52B, Air Bag Modules and Clock Spring 

P.52B-368

).

(2) Connect the negative (

−) battery cable.

(3) Do not disconnect auto-cruise control switch connector 

C-302.

(4) Turn the ignition switch to the "ON" position.
(5) The "CRUISE" (MAIN) switch to the "OFF" position.

(6) Measure the power supply voltage between auto-cruise 

control switch connector C-302 terminal 2 and ground by 
backprobing.

(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.7 and 5.0 volts?

YES : Go to Step 9 .
NO :  Go to Step 3 .

AC305235AB

C-302 (Y)

CONNECTOR: C-302

C-302 HARNESS

CONNECTOR:

COMPONENT SIDE

CLOCK

SPRING

1 2 3

AC205053 AC

C-302 HARNESS 
CONNECTOR:
HARNESS SIDE

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-20

STEP 3. Measure the power supply voltage at PCM 
connector B-19.

(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) The "CRUISE" (MAIN) switch to the "OFF" position.

AC305710

B-19 HARNESS

CONNECTOR:

COMPONENT SIDE

AC

B-19 (B)

CONNECTOR: B-19

AIR CLEANER

PCM

AC209793AI

PCM

MB991923

BODY SIDE
HARNESS

SPECIAL TOOL 18-PIN CONNECTOR
(PCM CONNECTOR B-19)

B-19 (B)

4 3 2 1

7 6 5

8 9

11 10

14 13 12

18 17 16 15

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-21

(5) Measure the power supply voltage between special tool 

18-pin connector terminal 12 (PCM connector B-19 terminal 

12) and ground.

(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Disconnect special tool MB991923 between the PCM and 

the body-side harness connector.

(8) Reconnect all the connectors to the PCM.
Q: Is the measured voltage between 4.7 and 5.0 volts?

YES : Go to Step 6 .
NO :  Go to Step 4 .

STEP 4. Check PCM connector B-19 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 5 .
NO :  Repair or replace the faulty connector (Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

), and install the air bag module (driver’s side) 

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

P.52B-368

). Then go to Step 18 .

AC209616AB

SPECIAL TOOL 18-PIN
CONNECTOR:
COMPONENT SIDE

AC305710

B-19 HARNESS

CONNECTOR:

COMPONENT SIDE

AC

B-19 (B)

CONNECTOR: B-19

AIR CLEANER

PCM

AUTO-CRUISE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-22

STEP 5. Check the harness for short circuit to ground 
between the PCM connector B-19 terminal 12 and the 
auto-cruise control switch connector C-302 terminal 2.

(1) Disconnect PCM connector B-19 and measure at the 

harness connector side.

(2) Turn the ignition switch to the "LOCK" (OFF) position.

(3) Measure the continuity between PCM connector B-19 

terminal 12 and ground.

(4) Reconnect PCM connector B-19.
Q: Is the measured continuity open circuit?

YES : Install the air bag module (driver’s side) (Refer to 

GROUP 52B, Air Bag Modules and Clock Spring 

P.52B-368

). Then go to Step 17 .

NO :  Go to Step 6 .

AC305710

B-19 HARNESS

CONNECTOR:

COMPONENT SIDE

AC

B-19 (B)

CONNECTOR: B-19

AIR CLEANER

PCM

AC209263AD

B-19 HARNESS
CONNECTOR:
COMPONENT SIDE