Mitsubishi Evolution X. Manual — part 1041

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-525

STEP 3. Check clock spring connector C-202 and C-205 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are clock spring connector C-202 and C-205 in good

condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The steering remote control switch should

work normally.

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

P.52B-392

).

Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the clock spring.

STEP 5. Check radio and CD player connector C-107 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is radio and CD player connector C-107 in good

condition?
YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The steering remote control switch should

work normally.

STEP 6. Check the wiring harness between radio and CD
player connector C-107 (terminal 22, 32) and clock spring
connector C-205 (terminal 2, 3).
NOTE: Also check intermediate connector C-32 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-110 is damaged, repair
or replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

• Check the communication lines for open or short circuit.

Q: Is the wiring harness between radio and CD player

connector C-107 (terminal 22, 32) and clock spring
connector C-205 (terminal 2, 3) in good condition?
YES : Go to Step 7.
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.

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

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CHASSIS ELECTRICAL

54A-526

STEP 7. Check steering remote control switch connector
C-213 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is steering remote control switch connector C-213 in

good condition?
YES : Go to Step 8.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The steering remote control switch should

work normally.

STEP 8. Check the wiring harness between steering wheel
audio remote control switch connector C-213 (terminal 2,
4) and clock spring connector C-202 (terminal 5, 4).

• Check the communication lines for open or short circuit.

Q: Is the wiring harness between steering remote control

switch connector C-213 (terminal 2, 4) and clock spring
connector C-202 (terminal 5, 4) in good condition?
YES : Go to Step 9.
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.

STEP 9. Retest the system
Check whether you can operate the radio and CD player by
using the steering remote control.
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

P.00-15

).

NO : Replace the radio and CD player.

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-527

Inspection Procedure 2: Steering Wheel Audio Remote Control Switch does not Function. <Vehicles

with MMCS>

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communi-

cation circuit are normal.

CLOCK
SPRING

STEERING WHEEL AUDIO
REMOTE CONTROL
SWITCH

Steering Wheel Audio Remote Control Switch Circuit

MULTIVISION
DISPLAY

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-528

.

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

• The steering wheel audio remote control switch

may be defective.

• The multivision display may be defective.

• The clock spring may be defective.

• Damaged harness wires and connectors

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

STEP 1. Check the steering wheel audio remote control
switch.
Remove the steering wheel audio remote control switch. Then
check continuity between the switch terminals. (Refer to

P.54A-535

.)

Q: Is the steering wheel audio remote control switch in

good condition?
YES : Go to Step 2.
NO : Replace the steering wheel audio remote control

switch.

AC708951BV

Connectors: C-10, C-32, C-108

C-10 (GR)

C-32

C-108

AC708953AF

Connectors: C-202, C-205, C-213

C-205

C-202

C-213 (R)

Switch Position

Tester
Connection

Measurement Value

No push

2

− 4

Approximately 71 k

Ω

Mode

Approximately 270

Ω

CH up

Approximately 740

Ω

CH down

Approximately 1.3 k

Ω

VOL up

Approximately 2.1 k

Ω

VOL down

Approximately 3.1 k

Ω