Mitsubishi Lancer (4A9 engine). Manual - part 166

 

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Mitsubishi Lancer (4A9 engine). Manual - part 166

 

 

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-326

STEP 6. Check the wire harness between the 
speaker or tweeter connector terminal and the 
audio amplifier connector terminal.
Check the communication lines for open circuit or 
short circuit.

• <Front door speaker (LH)> Check the wire har-

ness between E-12 front door speaker (LH) con-
nector terminal No.1, 2 and D-26 audio amplifier 
connector terminal No.28, 38.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors C-17 and C-126, and 
repair if necessary.

• <Front door speaker (RH)> Check the wire har-

ness between E-10 front door speaker (RH) con-
nector terminal No.1, 2 and D-26 audio amplifier 
connector terminal No.27, 37.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors C-17 and C-112, and 
repair if necessary.

• <Rear door speaker (LH)> Check the wire har-

ness between E-22 rear door speaker (LH) con-
nector terminal No.1, 2 and D-27 audio amplifier 
connector terminal No.1, 7.

NOTE: Prior to the wiring harness inspection, check 

intermediate connector D-21, and repair if neces-
sary.

• <Rear door speaker (RH)> Check the wire har-

ness between E-21 rear door speaker (RH) con-
nector terminal No.1, 2 and D-27 audio amplifier 
connector terminal No.2, 8.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors D-01, and repair if nec-
essary.

• <Tweeter (LH)> Check the wire harness between 

E-02 tweeter (LH) connector terminal No.1, 2 and 
D-27 audio amplifier connector terminal No.14, 6.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors C-17 and C-126, and 
repair if necessary.

• <Tweeter (RH)> Check the wire harness between 

E-04 tweeter (RH) connector terminal No.1, 2 
and D-27 audio amplifier connector terminal 
No.13, 5.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors C-17 and C-112, and 
repair if necessary.

• <Subwoofer> Check the wire harness between F-

25 subwoofer connector terminal No.1, 2, 3, 4 
and D-26 audio amplifier connector terminal 
No.30, 22, 29, 21.

NOTE: Prior to the wiring harness inspection, check 

intermediate connectors D-17, and repair if nec-

essary.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. Connector check: C-103 radio and CD 
player connector

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

STEP 8. Check the harness wire between C-103 
radio and CD player connector terminal No.26, 
28, 36, 38 and D-27 audio amplifier connector 
No.10, 4, 11, 12.

• Check the communication lines for open circuit.

NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-17, and repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

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.

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-327

Inspection Procedure 4: The radio and CD player does not operate normally by operating the audio 
control unit of the centre panel unit. <Vehicles without Auto Stop & Go (AS&G) System>

CAUTION

Before replacing the radio and CD player, ensure that the power supply circuit, the earth circuit and 
the communication circuit are normal.

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-328

Centre Panel Unit Power Source Circuit

CENTRE PANEL 
UNIT

AUDIO SWITCH PANEL

LCD PANEL (AUDIO, CLOCK)

RADIO AND CD PLAYER

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

FUSIBLE 
LINK

38

FUSIBLE 
LINK

36

ENGINE 
COMPARTMENT

RELAY BOX

NOTE

:PETROL
:DIESEL

RADIO AND CD PLAYER

CHASSIS ELECTRICAL

54A-329

COMMENTS ON TROUBLE SYMPTOM
When the audio does not operate normally by oper-
ating the audio control unit of the centre panel unit, 
the radio and CD player, centre panel unit, or the 
power supply circuit system of centre panel unit may 
be faulty.

PROBABLE CAUSES

• Malfunction of radio and CD player

• Malfunction of centre panel unit

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-10 centre panel unit 
connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

STEP 2. Resistance measurement at C-10 centre 
panel unit connector
(1) Disconnect the connector, and measure at the 

wiring harness-side connector.

(2) Check the continuity between C-10 centre panel 

unit connector terminal No.9 and body earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Check the wiring harness between C-10 
centre panel unit connector terminal No.9 and 
body earth.

• Check the earth wire for open circuit.

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 : 

Repair the wiring harness.

STEP 4. Voltage measurement at C-10 centre 
panel unit connector.
(1) Disconnect the connector, and measure at the 

wiring harness-side connector.

(2) Measure the voltage between C-10 centre panel 

unit connector terminal No.7 and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 5.

STEP 5. Check the wiring harness between C-10 
centre panel unit connector terminal No.7 and 
fusible link (36) <Petrol> or (38) <Diesel>

• Check the power supply line for open circuit and 

short circuit.

NOTE: Prior to the wiring harness inspection, check 
intermediate connector C-31, C-128, ETACS-ECU 
connector C-307 and C-311, and repair if necessary.

AC701094

Connectors: C-10, C-105 <LHD>

AN

C-10

C-105

AC701122 AZ

Connectors: C-10, C-105 <RHD>

C-10

C-105

ACA00886

AS

Connectors: C-307, C-311 <LHD>
ETACS-ECU

C-307

C-311

ACA00887

AS

Connectors: C-307, C-311 <RHD>
ETACS-ECU

C-311

C-307

 

 

 

 

 

 

 

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