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NO CD SOUND OUTPUT

id160300000500

Outline

Possible cause

•  CD disc malfunction

•  Connector or terminal malfunction of the following parts:

―  CD player

―  Connectivity master unit (CMU)

•  Short to ground or open circuit in CD player power supply circuit

•  CD player malfunction

•  Connectivity master unit (CMU) malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY ALL SYSTEM DTCs

•  Perform the DTC inspection.
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

Go to the next step.

2

VERIFY CD DISC CONDITION

•  Perform diagnostic assist function “Functional Inspection/Adjustment” CD test.
(See DIAGNOSTIC ASSIST FUNCTION [CONNECTIVITY MASTER UNIT (E)].)

•  Is the function set to “OK”?

Yes

Go to the next step.

No

Explain to the customer that the current CD disc which they are trying to play cannot be played in the CD player of the vehicle.

3

INSPECT CD PLAYER AND CONNECTIVITY MASTER UNIT (CMU) CONNECTORS FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(Refer to the [CONNECTOR INSPECTION] in the workshop manual)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

4

INSPECT CD PLAYER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT

•  Inspect the power supply circuit for a short to ground and open circuit.
(Refer to the [CIRCUIT INSPECTION] in the workshop manual)

•  Is the circuit normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

Repair completion verification

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting. (Explain contents of repair to customer)

No

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction is not resolved, replace the connectivity master unit (CMU).
(Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)

Possible cause	• CD disc malfunction • Connector or terminal malfunction of the following parts: ― CD player ― Connectivity master unit (CMU) • Short to ground or open circuit in CD player power supply circuit • CD player malfunction • Connectivity master unit (CMU) malfunction

Step	Inspection	Results	Action
1	VERIFY ALL SYSTEM DTCs • Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	VERIFY CD DISC CONDITION • Perform diagnostic assist function “Functional Inspection/Adjustment” CD test. (See DIAGNOSTIC ASSIST FUNCTION [CONNECTIVITY MASTER UNIT (E)].) • Is the function set to “OK”?	Yes	Go to the next step.
2		No	Explain to the customer that the current CD disc which they are trying to play cannot be played in the CD player of the vehicle.
3	INSPECT CD PLAYER AND CONNECTIVITY MASTER UNIT (CMU) CONNECTORS FOR MALFUNCTION • Inspect the applicable connector and terminal. (Refer to the [CONNECTOR INSPECTION] in the workshop manual) • Are the connector and terminal normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT CD PLAYER POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT • Inspect the power supply circuit for a short to ground and open circuit. (Refer to the [CIRCUIT INSPECTION] in the workshop manual) • Is the circuit normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction is not resolved, replace the connectivity master unit (CMU). (Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)