Mitsubishi Galant (2004+). Manual - part 344

 

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Mitsubishi Galant (2004+). Manual - part 344

 

 

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-567

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check ETACS-ECU connector C-219 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is ETACS-ECU connector C-219 in good condition?

YES : Go to Step 2.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the functions or equipment described in 

"CIRCUIT OPERATION" work normally, the interior 
light loaded signal should be normal.

STEP 2. Check the battery line of power supply circuit to 
the ETACS-ECU. Measure the voltage at ETACS-ECU 
connector C-219.

(1) Disconnect ETACS-ECU connector C-219 and measure the 

voltage available at the junction block side of the connector.

(2) Measure the voltage between terminal 20 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : 
Go to Step 4.
NO :  Go to Step 3.

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209836

2019 18 1716 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

AE

CONNECTOR C-219
(JUNCTION BLOCK SIDE)

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-568

STEP 3. Check the wiring harness between ETACS-ECU 
connector C-219 (terminal 20) and battery.

NOTE: Also check junction block connector C-214 and joint 
connector C-01 for loose, corroded, or damaged terminals, or 
terminals pushed back in the connector. If junction block con-
nector C-214 or joint connector C-01 is damaged, repair or 
replace the damaged component(s) as described in GROUP 
00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

C-219 (terminal 20) and battery in good condition?
YES : 
No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. If the 
functions or equipment described in "CIRCUIT 
OPERATION" work normally, the interior light loaded 
signal should be normal.

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305231

CONNECTOR: C-01

BO

AC305415

C-214

CONNECTOR: C-214

AU

JUNCTION BLOCK
(FRONT VIEW)

HARNESS SIDE

10

1

6

14

5

12

13

4

11

7

2

3

8

9

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-569

STEP 4. Check the ignition switch (IG1) line of the power 
supply circuit to the ETACS-ECU. Measure the voltage at 
ETACS-ECU connector C-219.

(1) Disconnect ETACS-ECU connector C-219 and measure the 

voltage available at the junction block side of the connector.

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

(3) Measure the voltage between terminal 8 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : 
Go to Step 6.
NO :  Go to Step 5.

STEP 5. Check the wiring harness between ETACS-ECU 
connector C-219 (terminal 8) and the ignition switch (IG1).

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209799

2019 18 1716 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

AB

CONNECTOR C-219
(JUNCTION BLOCK SIDE)

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-570

NOTE: Also check junction block connector C-215 for loose, 
corroded, or damaged terminals, or terminals pushed back in 
the connector. If junction block connector C-215 is damaged, 
repair or replace the damaged component(s) as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

C-219 (terminal 8) and the ignition switch (IG1) in good 
condition?
YES : 
No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. If the 
functions or equipment described in "CIRCUIT 
OPERATION" work normally, the interior light loaded 
signal should be normal.

STEP 6. Check the ignition switch (ACC) line of the power 
supply circuit to the ETACS-ECU. Measure the voltage at 
ETACS-ECU connector C-219.

(1) Disconnect ETACS-ECU connector C-219 and measure the 

voltage available at the junction block side of the connector.

(2) Turn the ignition switch to the "ACC" position.

(3) Measure the voltage between terminal 18 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : 
Replace the ETACS-ECU. If the functions or 

equipment described in "CIRCUIT OPERATION" work 
normally, the interior light loaded signal should be 
normal.

NO :  Go to Step 7.

AC305415

HARNESS SIDE

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-215

AV

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209365FE

CONNECTOR: C-219
(JUNCTION BLOCK SIDE)

 

 

 

 

 

 

 

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