Mitsubishi Evolution X. Manual — part 994

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-337

STEP 3. Check door speaker connector E-13 <front-LH>,
E-11 <front-RH>, E-23 <rear-LH> or E-22 <rear-RH>, or
tweeter connector E-02 <LH> or E-04 <RH>, or sub woofer
connector F-26 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Is door speaker connector E-13 <front-LH>, E-11

<front-RH>, E-23 <rear-LH> or E-22 <rear-RH>, or
tweeter connector E-02 <LH> or E-04 <RH>, or sub
woofer connector F-26 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

).

STEP 4. Check the speaker, tweeter or subwoofer.
(1) Remove the speaker, tweeter or subwoofer (Refer to

P.54A-575

).

(2) Check that the speaker or tweeter outputs the noise when

the voltage of 5 V is applied to the speaker or tweeter
connector terminal. <speaker or tweeter>

(3) Check that the subwoofer outputs the noise when the

voltage of 5 V is applied to the subwoofer connector
terminal. <subwoofer>

Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the speaker, tweeter or subwoofer.

STEP 5. Check audio amplifier connector D-29 <front door
speaker or sub woofer> or D-30 <rear door speaker or
tweeter> for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is audio amplifier connector D-29 <front door speaker or

sub woofer> or D-30 <rear door speaker or tweeter> in
good condition?
YES : Go to Step 6.
NO : Repair or replace the damaged component (Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

).

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

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STEP 6. Check the wiring harness between the speaker,
tweeter or sub woofer connector terminal and the audio
amplifier connector terminal.

• Check the communication lines for open circuit and short

circuit.

• <Front door speaker (LH)> Check the wiring harness

between front door speaker (LH) connector E-13 (terminal
1, 2) and audio amplifier connector D-29 (terminal 28, 38).
NOTE: Also check intermediate connectors C-23 and
C-128 for loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector. If intermediate connec-
tor C-23 or C-128 is damaged, repair or replace the
connector as described in GROUP 00E, Harness Connec-
tor Inspection

P.00E-2

.

• <Front door speaker (RH)> Check the wiring harness

between front door speaker (RH) connector E-11 (terminal
1, 2) and audio amplifier connector D-29 (terminal 27, 37).
NOTE: Also check intermediate connectors C-23 and C-116
for loose, corroded, or damaged terminals, or terminals
pushed back in the connector. If intermediate connector
C-23 or C-116 is damaged, repair or replace the connector
as described in GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

.

• <Rear door speaker (LH)> Check the wiring harness

between rear door speaker (LH) connector E-23 (terminal 1,
2) and audio amplifier connector D-30 (terminal 1, 7).
NOTE: Also check intermediate connector D-24 for loose,
corroded, or damaged terminals, or terminals pushed back
in the connector. If intermediate connector D-24 is dam-
aged, repair or replace the connector as described in
GROUP 00E, Harness Connector Inspection

P.00E-2

.

• <Rear door speaker (RH)> Check the wiring harness

between rear door speaker (RH) connector E-22 (terminal
1, 2) and audio amplifier connector D-30 (terminal 2, 8).
NOTE: Also check intermediate connector D-01 for loose,
corroded, or damaged terminals, or terminals pushed back
in the connector. If intermediate connector D-01 is dam-
aged, repair or replace the connector as described in
GROUP 00E, Harness Connector Inspection

P.00E-2

.

• <Tweeter (LH)> Check the wiring harness between tweeter

(LH) connector E-02 (terminal 1, 2) and audio amplifier con-
nector D-30 (terminal 14, 6).
NOTE: Also check intermediate connectors C-24 and
C-129 for loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector. If intermediate connec-
tor C-24 or C-117 is damaged, repair or replace the
connector as described in GROUP 00E, Harness Connec-
tor Inspection

P.00E-2

.

• <Tweeter (RH)> Check the wiring harness between tweeter

(RH) connector E-04 (terminal 1, 2) and audio amplifier con-
nector D-26 (terminal 13, 5).
NOTE: Also check intermediate connectors C-24 and C-117

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

54A-339

for loose, corroded, or damaged terminals, or terminals
pushed back in the connector. If intermediate connector
C-24 or C-117 is damaged, repair or replace the connector
as described in GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

.

• <Subwoofer> Check the wiring harness between subwoofer

connector F-26 (terminal 1, 2, 3, 4) and audio amplifier con-
nector D-29 (terminal No.30, 22, 29, 21).
NOTE: Also check intermediate connector D-16 for loose,
corroded, or damaged terminals, or terminals pushed back
in the connector. If intermediate connector D-16 is dam-
aged, repair or replace the connector as described in
GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between the speaker, tweeter or

sub woofer connector terminal and the audio amplifier
connector terminal in good condition?
YES <front door speaker> : Go to Step 7.
YES <except front door speaker> : Go to Step 9.
NO (harness wire is abnormal) : Repair or replace the

damaged component (Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

).

STEP 7. 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 8.
NO : Repair or replace the damaged component (Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

).

STEP 8. Check the harness wire between radio and CD
player connector C-107 (terminal 26, 28, 36, 38) and audio
amplifier connector D-30 (terminal 10, 4, 11, 12).

• Check the communication lines for open circuit and short

circuit.

NOTE: Also check intermediate connector C-24 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-24 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between radio and CD player

connector C-107 (terminal 26, 28, 36, 38) and audio
amplifier connector D-30 (terminal 10, 4, 11, 12) in good
condition?
YES : Check the trouble symptom, go to Step 9.
NO : Repair or replace the damaged component (Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

).

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

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STEP 9. Replace the audio amplifier temporarily, and
check the trouble symptom.
Replace the audio amplifier temporarily, and check that the
sound is output from the speaker.
Q: Is the check result normal?

YES : Replace the audio amplifier.
NO : Replace the radio and CD player.

Inspection Procedure 4: The audio does not operate normally by operating the radio and CD player of
the center panel unit.

CAUTION

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

Center Panel Unit Power Supply Circuit

FUSIBLE
LINK

36

CENTER PANEL
UNIT

AUDIO SWITCH PANEL

LCD PANEL

RELAY BOX
ENGINE
COMPARTMENT

RADIO AND CD
PLAYER