Mitsubishi Evolution X. Manual - part 1036

HANDS-FREE CELLULAR PHONE SYSTEM

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CHASSIS ELECTRICAL

54A-505

STEP 5. Check steering wheel voice control switch 
connector C-206 and steering wheel audio remote control 
switch connector C-213 for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are steering wheel voice control switch connector 

C-206 and steering wheel audio remote control switch 
connector C-213 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 steering wheel 
voice control switch connector C-206 (terminal 3) and 
steering wheel audio remote control switch connector 
C-213 (terminal 3).

• Check the communication lines for open circuit and short 

circuit.

Q: Is the wiring harness between steering wheel voice 

control switch connector C-206 (terminal 3) and 
steering wheel audio remote control switch connector 
C-213 (terminal 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.

STEP 7. Check the wiring harness between steering wheel 
voice control switch connector C-206 (terminal 2) and 
clock spring connector C-202 (terminal 4).

• Check the communication lines for open circuit and short 

circuit.

Q: Is the wiring harness between steering wheel voice 

control switch connector C-206 (terminal 2) and clock 
spring connector C-202 (terminal 4) in good condition?
YES : Go to Step 8.
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.

HANDS-FREE CELLULAR PHONE SYSTEM

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STEP 8. Retest the system
Check that the hands-free cellular phone system works nor-
mally when the steering wheel voice control switch is operated.
Q: Check that the hands-free cellular phone system works 

normally when the steering wheel voice control switch 
is operated.
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 <vehicles without 

MMCS> or multivision display <vehicles with MMCS>.

Inspection Procedure 5: The cellular phone is not recognized or the connection cannot be 
established.

.

FUNCTION

With the hands free cellular phone system, the cellu-
lar phone and hands free module communicate with 
each other by using Bluetooth

™.

.

TROUBLE JUDGMENT CONDITIONS

When the cellular phone cannot be recognized or the 
communication cannot be established, the cellular 
phone or hands-free module may be defective.

.

TROUBLESHOOTING HINTS

• The cellular phone may be defective.

• The hands free module may be defective.

DIAGNOSIS

STEP 1. Check the cellular phone.
Check that the cellular phone can be used normally 
as a unit.

Q: Is it possible to use the cellular phone normally?

YES : 

Go to Step 2.

NO : 

Repair or replace the cellular phone.

STEP 2. Check the position of cellular phone.
Check that the function becomes normal when the 
cellular phone is moved closer to the hands free 
module.

Q: Does the function become normal when the 

cellular phone is moved closer to the hands free 
module?
YES : 

No action is necessary and testing is 

complete.

NO : 

Go to Step 3.

STEP 3. Check the registration method of cellular 
phone.
Check that the cellular phone was registered to the 
hands free module by following the normal proce-
dure.

Q: Was the cellular phone registered by following the 

normal procedure?
YES : 

Check the trouble symptom, and finish 

when it is normal. When the abnormality is 
present, go to Step 4.

NO : 

Register a cellular phone according to a 
regular procedure.

STEP 4. Temporarily replace the cellular phone, 
and check the trouble symptom.
Temporarily register a separate Bluetooth

™-sup-

ported cellular phone, and check that the hands free 
cellular phone system operates normally.

Q: Is the normal conversation possible with the hands 

free system?
YES : 

Ask the customer to have the cellular phone 

repaired or replaced. Then, delete the 

temporarily registered cellular phone. Once 
the customer prepares the normally-working 
cellular phone, register the cellular phone to 
the hands free module.

NO : 

Replace the hands free module.

HANDS-FREE CELLULAR PHONE SYSTEM

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Inspection Procedure 6: Steering wheel voice control switch illumination does not come on.

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communi-
cation circuit are normal.

.

CLOCK
SPRING

INTERFACE
CIRCUIT

COMBINATION
METER

Steering Wheel Voice Control Switch Illumination Circuit

STEERING
WHEEL 
VOICE
CONTROL
SWITCH

AC708950

Connector: C-04

AR

AC708953AE

Connectors: C-202, C-205, C-206

C-206 (Y)

C-202

C-205

HANDS-FREE CELLULAR PHONE SYSTEM

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CHASSIS ELECTRICAL

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TECHNICAL DESCRIPTION (COMMENT)

The power supply circuit to the steering wheel 
voice-control switch, the steering wheel voice control 
switch, the combination meter, or the clock spring 
may be defective.

.

TROUBLESHOOTING HINTS

• The steering wheel voice control switch may be 

defective.

• The combination meter 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 combination meter. 
Check whether the combination meter works normally.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Diagnose the combination meter (Refer to 

P.54A-28

).

STEP 2. Check steering wheel voice control switch 
connector C-206 for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Is steering wheel voice-control switch connector C-206 

in good condition?
YES : Go to Step 3.
NO :  Repair or replace the damaged component (Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

). The steering remote control switch should 

work normally.

STEP 3. Check the wiring harness between steering wheel 
voice control switch connector C-206 (terminal 1) and the 
ground.

• Check the ground wires for open circuit.

Q: Is the wiring harness between steering wheel 

voice-control switch connector C-206 (terminal 1) and 
the ground in good condition?
YES : Go to Step 4.
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.