Mitsubishi Lancer (4A9 engine). Manual — part 162
RADIO AND CD PLAYER
CHASSIS ELECTRICAL
54A-310
Inspection Procedure 2: No sound is heard. <Vehicles without audio amplifier>
CAUTION
Before replacing the radio and CD player, ensure that the power supply circuit, the earth circuit and
the communication circuit are normal.
Speaker System Circuit
TWEETER (RH)
REAR DOOR
SPEAKER (LH)
REAR DOOR
SPEAKER (RH)
FRONT DOOR
SPEAKER (RH)
FRONT DOOR
SPEAKER (LH)
TWEETER (LH)
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
<VEHICLES WITH 6 SPEAKER>
<VEHICLES WITH 6 SPEAKER>
RADIO AND CD PLAYER
RADIO AND CD PLAYER
CHASSIS ELECTRICAL
54A-311
COMMENTS ON TROUBLE SYMPTOM
If the audio sound is not output, the radio and CD
player may have a problem. In addition, if any of the
speakers is short-circuited, the protection circuit
inside the radio and CD player disables all the
speakers to sound. Therefore, if all the speakers do
not output sound, the speaker circuit may be shorted
or the speaker may be defective. Also, the option
coding information may be inconsistent.
PROBABLE CAUSES
• Malfunctions of radio and CD player
• Malfunction of speaker or tweeter
• Option coding information inconsistency
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. ETACS-ECU coding data check
(1) Operate the M.U.T.-III to read the ETACS-ECU
option coding information (Refer to GROUP 00
−
Coding List ).
(2) Check that the result matches with the number of
speakers ("6 speakers" or "4 speakers") specified
by "Number of speaker."
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Operate the M.U.T.-III to set the option
coding "Number of speaker" to "6 speakers"
or "4 speakers", and check the trouble
symptom.
AC701094
Connector: C-103 <LHD>
AJ
AC701122 DC
Connectors: C-103 <RHD>
AC612730
Connectors: E-02, E-12
AD
E-02 (B)
E-12
AC612731
Connectors: E-04, E-10
AD
E-04 (B)
E-10
AC612733
Connector: E-21
AB
AC612732
Connector: E-22
AB
RADIO AND CD PLAYER
CHASSIS ELECTRICAL
54A-312
STEP 2. Check the following connectors.
Check the following connectors:
• E-12 front door speaker (LH) connector
• E-10 front door speaker (RH) connector
• E-22 rear door speaker (LH) connector
• E-21 rear door speaker (RH) connector
• E-02 tweeter (LH) connector <vehicles with 6-
speaker>
• E-04 tweeter (RH) connector <vehicles with 6-
speaker>
Q: Are all the connectors in good condition?
YES :
Go to Step 3.
NO :
Repair the defective connector.
STEP 3. Check the speaker or tweeter.
(1) Remove the speaker or tweeter. Refer to .
(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.
Q: Do the speaker or tweeter output the noise?
YES :
Go to Step 4.
NO :
Replace the speaker or tweeter.
STEP 4. Connector check: C-103 radio and CD
player connector
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the defective connector.
STEP 5. Check the wiring harness between the
speaker or tweeter connector terminal and the
radio and CD player connector terminal.
Check the communication lines for short circuit.
• <Front door speaker (LH), tweeter (LH)> Check
the wiring harness between E-12 front door
speaker (LH) connector terminal No.1, 2 or E-02
tweeter (LH) connector terminal No.2, 1 and C-
103 radio and CD player connector terminal
No.28, 38.
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-126, and repair if nec-
essary.
• <Front door speaker (RH), tweeter (RH)> Check
the wiring harness between E-10 front door
speaker (RH) connector terminal No.1, 2 or E-04
tweeter (RH) connector terminal No.2, 1 and C-
103 radio and CD player connector terminal
No.26, 36.
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-112, and repair if nec-
essary.
• <Rear door speaker (LH)> Check the wiring har-
ness between E-22 rear door speaker (LH) con-
nector terminal No.1, 2 and C-103 radio and CD
player connector terminal No.27, 37.
NOTE: Prior to the wiring harness inspection, check
intermediate connectors C-28 and D-21, and
repair if necessary.
• <Rear door speaker (RH)> Check the wiring har-
ness between E-21 rear door speaker (RH) con-
nector terminal No.1, 2 and C-103 radio and CD
player connector terminal No.25, 35.
NOTE: Prior to the wiring harness inspection, check
intermediate connectors C-16 and D-01, and
repair if necessary.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
STEP 6. Retest the system
Check if the sound is output from all the speakers.
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.
RADIO AND CD PLAYER
CHASSIS ELECTRICAL
54A-313
Inspection Procedure 2: No sound is heard. <Vehicles with audio amplifier>
CAUTION
Before replacing the radio and CD player, ensure that the power supply circuit, the earth circuit and
the communication circuit are normal.
Audio System Circuit
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
AUDIO AMPLIFIER
RADIO AND CD PLAYER
ENGINE
COMPARTMENT
RELAY BOX
NOTE
:
:
PETROL
DIESEL
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст