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
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