Possible DTC

No radio reception (SIRIUS satellite radio)

Using the M-MDS

B1A89:13

Without using M-MDS (On-board diagnostic test mode)

—

Possible cause

• Low battery voltage

• Electronic jamming from outside, or inferior condition of broadcasting station radio wave

• Jamming from aftermarket electronic equipment (two-way radio, navigation system, mobile phone, etc.)

• Antenna plug poor connection

• Antenna feeder malfunction

• SIRIUS satellite radio unit malfunction

• Open or short circuit in wiring harness between SIRIUS satellite radio unit and audio unit

• Communication error between SIRIUS satellite radio unit and audio unit

• Audio unit malfunction

STEP

INSPECTION

ACTION

1

• Verify that the AM radio and FM radio reception conditions.

• Are AM radio and FM radio reception normally?

Yes

Go to the next step.

No

Perform symptom “No.1 no radio reception (AM/FM)/no or low volume” troubleshooting procedure.

(See NO RADIO RECEPTION (AM/FM)/NO OR LOW VOLUME [RADIO].)

2

• Is aftermarket electronic equipment (two-way radio, navigation system, mobile phone, etc.) installed?

  NOTE:

  • TV antenna located closely to audio antenna can be cause of noise. Relocate TV antenna.

Yes

Go to the next step.

No

Go to Step 4.

3

• Remove aftermarket electronic equipment.

• Turn audio unit ON and check reception condition.

• Is reception improved?

Yes

The system is normal.

(Explain to customers that aftermarket electronic equipment is cause of noise)

No

Go to the next step.

4

• Inspect antenna feeder No.1 connection condition.

• Is connection okay?

Yes

Go to the next step.

No

Insert antenna feeder securely.

5

• Switch the ignition OFF (LOCK).

• Measure continuity between SIRIUS satellite radio antenna feeder axis and ground.

• Is there any continuity?

Yes

Replace the antenna feeder No.1.

(See ANTENNA FEEDER NO.1 REMOVAL/INSTALLATION.)

No

Go to the next step.

6

• Inspect the antenna feeder No.1.

  (See SIRIUS SATELLITE RADIO ANTENNA INSPECTION.)

• Is the antenna feeder No.1 normal?

Yes

Go to the next step.

No

Replace the antenna feeder No.1.

(See SIRIUS SATELLITE RADIO ANTENNA REMOVAL/INSTALLATION .)

7

• Inspect the SIRIUS satellite radio antenna.

  (See SIRIUS SATELLITE RADIO ANTENNA INSPECTION.)

• Is the SIRIUS satellite radio antenna normal?

Yes

Go to the next step.

No

Replace the SIRIUS satellite radio antenna.

(See SIRIUS SATELLITE RADIO ANTENNA REMOVAL/INSTALLATION.)

8

• Inspect the following wiring harness for open or short circuit.

• Between SIRIUS satellite radio unit harness side connector terminal C and audio unit terminal 2E

• Between SIRIUS satellite radio unit harness side connector terminal E and audio unit terminal 2G

• Between SIRIUS satellite radio unit harness side connector terminal O and ACC relay

• Between SIRIUS satellite radio unit harness side connector terminal P and relay and fuse block

• Between SIRIUS satellite radio unit harness side connector terminal G and audio unit terminal 2F

• Between SIRIUS satellite radio unit harness side connecto G and audio unit 2H

• Between SIRIUS satellite radio unit harness side connector terminal A and GND

• Is there any open or short circuit detected?

Yes

Repair or replace malfunctioning part.

No

Go to the next step.

9

• Install all removed parts.

• Compare reception with other Audio unit on same model (model/unit) under same problem conditions.

• Is reception equivalent between customer’s unit and compared unit?

  NOTE:

  • Due to following differences, you may feel difference in reception efficiency.

(Vehicle side factor)

• Antenna installation location, height, feeder wiring routing, optional electrical equipment

(Audio unit factor)

• Volume concern type: It decreases change of volume when signals become weak. (Noise is easily noticed)

• Volume concern type: It decreases change of volume when signals become weak. (Noise is easily noticed)

Yes

The system is normal.

(It is caused by electronic jamming from outside, or inferior broadcasting station signal condition.)

No

Replace audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)