Mitsubishi Lancer (4A9 engine). Manual - part 153

ACCESSORY SOCKET AND CIGARETTE LIGHTER

CHASSIS ELECTRICAL

54A-274

(3) Voltage between C-51 accessory socket (front 

floor console) connector terminal No.2 and the 
body earth

OK: System voltage

(4) Voltage between C-18 accessory socket (rear 

floor console) connector terminal No.2 and the 
body earth <vehicles with accessory socket (rear 
floor console)>

OK: System voltage

Q: Is the check result normal?

YES  : 

Go to Step 7.

NO <accessory socket (front floor console) side> : 

Go to Step 5.

NO <accessory socket (rear floor console) side> : 

Go to Step 6.

STEP 5. Check the wiring harness between C-51 
accessory socket (front floor console) connector 
terminal No.2 and C-315 ETACS-ECU connector 
terminal No.3.

• Check the power supply lines (battery power sup-

ply) for open circuit and short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 6. Check the wiring harness between C-18 
accessory socket (rear floor console) connector 
terminal No.2 and C-315 ETACS-ECU connector 
terminal No.11.

• Check the power supply lines (battery power sup-

ply) for open circuit and short circuit.

NOTE: Check C-19 intermediate connector, and 
repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. Resistance measurement at C-51 
accessory socket (front floor console) connector 
and C-18 accessory socket (rear floor console) 
connector <vehicles with accessory socket (rear 
floor console)>.
(1) Disconnect the connector, and measure the 

resistance available at the wiring harness side of 

the connector.

(2) Check the continuity between C-51 accessory 

socket (front floor console) connector terminal 
No.1 and the body earth.

OK: Continuity exists (2 ohms or less)

(3) Check the continuity between C-18 accessory 

socket (rear floor console) connector terminal 
No.1 and the body earth. <vehicles with 
accessory socket (rear floor console)>

OK: Continuity exists (2 ohms or less)

Q: Is the check result normal?

YES  : 

Go to Step 10.

NO <accessory socket (front floor console) side> : 

Go to Step 8.

NO <accessory socket (rear floor console) side> : 

Go to Step 9.

STEP 8. Check the wiring harness between C-51 
accessory socket (front floor console) connector 
terminal No.1 and body earth.

• Check the body earth wires for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

STEP 9. Check the wiring harness between C-18 
accessory socket (rear floor console) connector 
terminal No.1 and body earth.

• Check the body earth wires for open circuit.

NOTE: Check C-19 intermediate connector, and 
repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

STEP 10. Retest the system
Check if the accessory socket power is turned ON.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Use Troubleshooting/Inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the accessory socket.

ACCESSORY SOCKET AND CIGARETTE LIGHTER

CHASSIS ELECTRICAL

54A-275

Inspection Procedure 2: The cigarette lighter does not work.<Vehicles with cigarette lighter>

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communica-
tion circuit are normal.

IGNITION 
SWITCH (ACC)

FUSIBLE 
LINK

37

42

NOTE

PETROL

:

DIESEL

:

Cigarette Lighter Circuit

ETACS-ECU

Wire colour code 
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue 
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

ACC 
RELAY 2

CIGARETTE 
LIGHTER

ACA00921

Connector: C-21 <LHD>

AC

ACA00923

Connector: C-21 <RHD>

AC

ACCESSORY SOCKET AND CIGARETTE LIGHTER

CHASSIS ELECTRICAL

54A-276

OPERATION
When the ignition switch is in the ON or ACC posi-
tion, the cigarette lighter can be used.

COMMENTS ON TROUBLE SYMPTOM
If the cigarette lighter cannot be used even when the 
ignition switch is in the ON or ACC position, ETACS-
ECU, cigarette lighter itself, or cigarette lighter power 
supply circuit may have a problem.

PROBABLE CAUSES

• Malfunctions of cigarette lighter

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code
Check if the diagnosis code is set to the ETACS-
ECU.

Q: Is the check result normal?

YES : 

Troubleshoot the ETACS-ECU. Refer to 

ETACS-ECU 

− Troubleshooting .

NO : 

Go to Step 2.

STEP 2. M.U.T.-III other system data list
Check the input signal of ACC relay. (ETACS-ECU)

• Turn the ignition switch to the ACC position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to ETACS 

− Input Signal Procedure 1 

"The ignition switch (ACC) signal is not sent 
to the ETACS-ECU" .

STEP 3. Cigarette lighter check
Refer to .

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the cigarette lighter. Go to Step 4.

STEP 4. Connector check: C-315 ETACS-ECU 
connector, C-21 cigarette lighter connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

STEP 5. Voltage measurement at C-21 cigarette 
lighter connector.
(1) Disconnect the connector, and measure at the 

wiring harness-side connector.

(2) Turn the ignition switch to the ACC position.
(3) Voltage between C-21 cigarette lighter connector 

terminal No.2 and the body earth

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.

STEP 6. Check the wiring harness between C-21 
cigarette lighter connector terminal No.2 and C-
315 ETACS-ECU connector terminal No.3.

• Check the power supply lines (battery power sup-

ply) for open circuit and short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. Resistance measurement at C-21 
cigarette lighter connector.
(1) Disconnect the connector, and measure the 

ACA00886

AN

Connector: C-315 <LHD>
ETACS-ECU

ACA00887

AL

Connector: C-315 <RHD>
ETACS-ECU

Item No.

Item name

Normal 
condition

Item 288

ACC switch

ON

ACCESSORY SOCKET AND CIGARETTE LIGHTER

CHASSIS ELECTRICAL

54A-277

resistance available at the wiring harness side of 
the connector.

(2) Check the continuity between terminal No.1 and 

body earth.

OK: Continuity exists (2 ohms or less)

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Go to Step 8.

STEP 8. Check the wiring harness between C-21 
cigarette lighter connector terminal No.1 and 
body earth.

• Check the body earth wires for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

STEP 9. Retest the system
Check that the cigarette lighter operates normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Use Troubleshooting/Inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the cigarette lighter.

REMOVAL AND INSTALLATION

M1542301400195

CIGAR LIGHTER <FLOOR CONSOLE PANEL ASSEMBLY>

CIGAR LIGHTER <INSTRUMENT PANEL CENTRE LOWER ASSEMBLY>

Pre-removal operation
• Removal of floor console panel assembly (Refer to 

GROUP 52A 

− Floor Console Assembly )

Post-installation operation
• Installation of floor console panel assembly (Refer to 

GROUP 52A 

− Floor Console Assembly )

AC705689

AC707557AB

1

Removal Steps 

1.

Cigar lighter

Pre-removal operation
• Removal of Instrument panel centre lower (Refer to 

GROUP 52A 

− Instrument centre panel )

Post-installation operation
• Installation of Instrument panel centre lower (Refer to 

GROUP 52A 

− Instrument centre panel )

AC802457

4

2

3

1