Mitsubishi Outlander GS45X. Manual - part 197

ETACS

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CHASSIS ELECTRICAL

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STEP 4. Check ETACS-ECU connectors C-307 and C-309 
for loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is ETACS-ECU connectors C-307 and C-309 in good 

condition?
YES : Go to Step 5.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 5. Check the battery power supply circuit to the 
ETACS-ECU. Measure the voltage at ETACS-ECU 
connectors C-307 and C-309.
(1) Disconnect ETACS-ECU connectors C-307 and C-309 

measure the voltage available at the wiring harness side of 
the connector.

(2) Measure the voltage between ETACS-ECU connector 

C-307 terminal 2 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

(3) Measure the voltage between ETACS-ECU connector 

C-309 terminal 1 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 7.
NO :  Go to Step 6.

STEP 6. Check the wiring harness between ETACS-ECU 
connector C-309 (terminal 1) or C-307 (terminal 2) and the 
fusible link (34) or (36).

• Check the power supply line (battery supply) for open circuit 

and short circuit.

Q: Is the wiring harness between ETACS-ECU connector 

C-309 (terminal 1) or C-307 (terminal 2) and the fusible 
link (34) or (36) 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. The system 
should communicate with the ETACS-ECU normally.

AC608254 BF

Harness side: C-307

AC608254 BI

Harness side: C-309

ETACS

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STEP 7. Retest the system
Check that the ETACS-ECU functions work normally.
Q: Is the check result satisfactory?

YES : The procedure is complete. (If no malfunctions are 

found in all steps, an intermittent malfunction is 
suspected. Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

NO :  Replace the ETACS-ECU.

TROUBLE SYMPTOM CHART FOR INPUT SIGNAL

M1545004900368

Trouble symptom

Inspection 
Procedure No.

Reference 
page

ETACS-ECU does not receive any signal from the ignition switch (ACC). 1

P.54A-787

ETACS-ECU does not receive any signal from the ignition switch (IG1). 2

P.54A-789

ETACS-ECU does not receive any signal from the key reminder switch. 3

P.54A-792

ETACS-ECU cannot receive the signal of front door lock actuator (LH) 
or front door lock actuator (RH).

4

P.54A-795

ETACS-ECU does not receive any signal from the front door switch 
(LH).

5

P.54A-802

ETACS-ECU does not receive any signal from the front door switch 
(RH).

6

P.54A-804

ETACS-ECU does not receive any signal from the rear door switch (LH). 7

P.54A-806

ETACS-ECU does not receive any signal from the rear door switch 
(RH).

8

P.54A-809

ETACS-ECU does not receive any signal from the liftgate switch.

9

P.54A-811

ETACS-ECU does not receive any signal from the hood switch.

10

P.54A-814

ETACS-ECU does not receive any signal from the hazard warning light 
switch.

11

P.54A-817

ETACS-ECU does not receive any signal from the column switch signal. 12

P.54A-819

ETACS

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INPUT SIGNAL PROCEDURES

Inspection Procedure 1: ETACS-ECU does not receive any signal from the ignition switch (ACC).

.

TECHNICAL DESCRIPTION (COMMENT)

If there is an error to the ignition switch (ACC) input 
signal, or the ACC relay inside the ETACS-ECU does 
not operate, the ignition switch (ACC) signal is no 
longer output to the communication line.

.

TROUBLESHOOTING HINTS

• The ETACS-ECU may be defective

• The ignition switch may be defective

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check ETACS-ECU connector C-317 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-317 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

. Check that the input signal of ignition switch 

(ACC) is normal.

Ignition Switch (ACC) Input Circuit

ETACS-ECU

IGNITION
SWITCH (ACC)

ACA02655AF

Connector: C-317

ETACS

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STEP 2. Check the ignition switch (ACC) line of the power 
supply circuit to the ETACS-ECU. Measure the voltage at 
ETACS-ECU connector C-317.
(1) Measure by backprobing without disconnecting the 

connector.

(2) Turn the ignition switch to the "ACC" position.
(3) Measure the voltage between the terminal No.7 and the 

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 5.
NO :  Go to Step 3.

STEP 3. Check the ignition switch.
Remove the ignition switch. Then check continuity between the 
switch terminal.

Q: Is the ignition switch in good condition?

YES : Go to Step 4.
NO :  Replace the ignition switch. Check that the input 

signal of ignition switch (ACC) is normal.

AC608254 DR

Harness side: C-317

Ignition key 
position

Terminal 
number

Normal condition

LOCK

1 

− 2, 1 − 4, 1 − 5, 

1 

− 6

No continuity

ACC

1 

− 6

Continuity exists (2 
ohms or less)

ON

1 

− 2 − 4 − 6

Continuity exists (2 
ohms or less)

START

1 

− 2 − 5

Continuity exists (2 
ohms or less)