Mitsubishi Lancer (4A9 engine). Manual - part 192

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-430

TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit to the steering wheel audio 
remote control switch, the steering wheel audio 
remote control switch, the radio and CD player, or 
the clock spring may be defective.

TROUBLESHOOTING HINTS

• Malfunction of steering wheel audio remote con-

trol switch

• Malfunctions of radio and CD player

• Malfunction of the clock spring

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list 
Check whether the service data below are normal. 
(Refer to .)
(1) Turn the ignition switch to "ON" position.
(2) Operate each switch of the steering remote 

control. Check whether the normal conditions 
listed below are displayed.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Replace the audio unit.

NO : 

Go to Step 2.

STEP 2. Check the steering wheel audio remote 
control switch.
Check the continuity of the steering wheel audio 
remote control switch (Refer to ).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the remote controlled radio switch.

STEP 3. Connector check: C-204 and C-205 clock 
spring connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the clock spring.
Check whether the clock spring is in good condition. 
Refer to GROUP 52B 

− Driver’s Air bag module and 

clock spring .

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the clock spring.

STEP 5. Connector check: C-103 radio and CD 
player connector

Q: Is the check result normal?

AC701094

Connector: C-103 <LHD>

AJ

AC701122 AV

C-103

C-105

Connectors: C-103, C-105 <RHD>

AC612708 AQ

Connectors: C-202, C-204, C-205 <LHD>

C-202 (R)

C-204

C-205

AC612716 AD

Connectors: C-202, C-204, C-205 <RHD>

C-202 (R)

C-204

C-205

Item 
No.

Item name

Normal 
condition

Item 1

RADIO remote SW (SEEK-)

ON

Item 2

RADIO remote SW (SEEK+)

ON

Item 3

RADIO remote SW (MODE)

ON

Item 4

RADIO remote SW (VOL-)

ON

Item 5

RADIO remote SW (VOL+)

ON

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-431

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

STEP 6. Check the wiring harness between C-103 
radio and CD player connector terminal No.22, 32 
and C-205 clock spring connector terminal No.2, 
3.

• Check the communication lines for open circuit or 

short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. Connector check: C-202 steering wheel 
audio remote control switch connector

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

STEP 8. Check the wiring harness between C-202 
steering wheel audio remote control switch 
connector terminal No.2, 4 and C-204 clock 
spring connector terminal No.5, 4.

• Check the communication lines for open circuit or 

short circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

STEP 9. Retest the system
Check whether you can operate the radio and CD 
player by using the steering wheel audio remote con-
trol switch.

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 radio and CD player.

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-432

Inspection Procedure 1: Steering wheel audio remote control switch does not function. <Vehicles 
with MMCS>

Steering Wheel Audio Remote Control Switch Circuit

CLOCK 
SPRING

STEERING 
WHEEL 
AUDIO 
REMOTE 
CONTROL 
SWITCH

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

MULTIVISION DISPLAY

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-433

TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit to the steering wheel audio 
remote control switch, the steering wheel audio 
remote control switch, the multivision display, or the 
clock spring may be defective.

TROUBLESHOOTING HINTS

• Malfunction of steering wheel audio remote con-

trol switch

• Malfunctions of multivision display

• Malfunction of the clock spring

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the steering wheel audio remote 
control switch.
Check the continuity of the steering wheel audio 
remote control switch (Refer to ).

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the remote controlled radio switch.

STEP 2. Connector check: C-202 steering wheel 
audio remote control switch connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

STEP 3. Connector check: C-205 and C-204 clock 
spring connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the clock spring.
Check whether the clock spring is in good condition 
(Refer to GROUP 52B 

− Driver’s Air bag module and 

clock spring ).

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the clock spring.

STEP 5. Connector check: C-142 multivision 
display connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

STEP 6. Check the wiring harness between C-142 
multivision display connector terminal No.53, 69 
and C-205 clock spring connector terminal No.2, 
3.
NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-139, and repair if neces-
sary.

• Check the communication lines for open circuit or 

short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

AC701094

Connector: C-142 <LHD>

BM

C-142 (GR)

AC701122 CP

Connector: C-142 <RHD>

C-142 (GR)

AC612708 AQ

Connectors: C-202, C-204, C-205 <LHD>

C-202 (R)

C-204

C-205

AC612716 AD

Connectors: C-202, C-204, C-205 <RHD>

C-202 (R)

C-204

C-205