Troubleshooting

Troubleshooting Guide

Troubleshooting (Step by Step)

Symptom of Malfunction	Probable Cause	Remedy
System does not turn on when the power switch is pressed	Radio Power Supply Circuit	P-1
	LCD module	P-1
Panel switch does not work	Steering column switch circuit	R-3
	AVN H/U front board assembly	P-1
	Radio Power Supply Circuit	P-1
No sound from speakers	Radio Power Supply Circuit	P-1
	Check the wiring between the speakers and the AVN H/U.	R-6
Noise occurs	Go to "Noise occurs".	R-5
Radio broadcast is not received (poor reception)	Go to "Radio broadcast cannot be received" (poor reception)	R-4
Radio lamp does not work when the illumination control switch is ON	Illumination Circuit	R-6
	Radio Power Supply Circuit	P-1
Display does not turn off when the illumination control switch is turned on	Illumination Circuit	R-6
Power does not turn off	AVN H/U	P-1
Bluetooth voice recognition error	AVN H/U	P-1
	microphone input	R-7
USB interface error	AVN Head Unit	P-1
	USB device error	R-8
	Check the multimedia jack	R-8
iPod interface error	AVN H/U	P-1
	Check the multimedia jack	R-8
AUX connection error	AVN H/U	P-1
	Check the multimedia jack	R-8

R-1: Replace the AVN head unit

1. 1
   Check for the same problem after replacing the AVN H/U.

   GOOD	? If the AVN operates normally, replace the AVN H/U.

   
   

   NG	? Check the vehicle wiring. (See Removal procedure, R-2)

2. 2
   Remove the AVN H/U.
3. 3
   Check the specified terminal condition.

   

   GOOD

   
   

   Tester connection	Condition	Specified condition
   CON-B11/B12 — GROUND (B+)	Always	9 - 16 V
   CON-B18 — GROUND (ACC)	Always	9 - 16 V
   CON-B23-GROUND	Always	Below 1?
   CON-B24-GROUND	Always	Below 1?

   
   

   NG	? Check again after repairing or replacing the wiring harness or connector.

4. 4
   Check the specifications of the steering wheel remote control switch connector (See Steering Wheel Remote Control Audio System Inspection).

   GOOD	? Replace AVN H/U

   
   

   NG	? Replace steering wheel remote control switch

5. 5
   Check radio reception after replacing AVN H/U.

   GOOD	? If the AVN operates normally, replace the AVN H/U.

   
   

   NG	? Go to step 2

6. 6
   Check the antenna connector

   GOOD	? Check radio reception again after connecting the antenna connector.

   
   

   NG	? Go to step 3

7. 7
   Check the antenna amplifier input voltage (See Antenna - Rear Window Antenna Circuit).

   GOOD	? Check the antenna amplifier input voltage (See Antenna - Antenna Cable).

   
   

   NG	? Go to step 4

8. 8
   Check the antenna feeder cable connection (See Antenna - Antenna Cable).

   GOOD	? Check again after repair or replacement of the antenna feeder cable.

   
   

   NG	? Go to step 5

9. 9
   Inspect and repair the roof antenna.

R-2: Check the AVN H/U power connection. R-3: Check the steering wheel remote control. R-4: Radio broadcast is not received (poor reception). R-5: Make sure the speakers are installed securely.

GOOD	? Securely install the speakers

NG	? Securely install the speakers

1. Noise source description

   Noise Conditions	Noise type
   Depressing the accelerator pedal increases the noise, and stopping the engine immediately stops the noise.	Alternator noise
   When the air conditioner or heater is operating	Fan motor noise
   When accelerating sharply on an unpaved road When the ignition switch is ON (IG)	Fuel pump noise
   When the horn switch is pressed and released When the horn switch is pressed and held	Horn noise
   Engine running causes a faint noise, and the noise stops immediately when the engine is stopped.	Ignition noise
   Noise occurs in synchronization with turn signal flashing	Flashing noise
   Noise occurs while the windshield washer is operating	Washer motor noise
   Engine running causes noise, but stopping the engine does not eliminate the noise	Engine coolant temperature sensor noise
   When the windshield wiper is operating	Wiper blade noise
   When the brake pedal is depressed	Stop lamp switch noise
   Other	Static electricity in the vehicle

R-6: Repeat the check after replacing the AVN H/U.

GOOD	? Remove the AVN H/U.

NG	? Go to step 1

1. 1
   Check illumination input signal (+)

   Tester connection	Condition	Specified condition
   CON-A8-GROUND	Always	9-16 V

   
   

   GOOD	? Check the vehicle wiring

   
   

   NG	? Go to step 2

2. 2
   Check the illumination input signal (-) using an oscilloscope.

   Tester connection	Condition	Specified condition
   CON-A17-GROUND	Always	Check the PWM waveform

   
   

   GOOD	? Check the vehicle wiring and the cluster PWM output.

   
   

   NG	? Go to step 3

3. 3
   Check the vehicle lighting control module.

   

R-7: Check the condition of the microphone input.

Tester connection	Condition	Specified condition
CON-B10 - Microphone (+)	Always	Below 1?
CON-B22 - Microphone (-)	Always	Below 1?
CON-B22-GROUND	Always	Open

GOOD	? Check the vehicle wiring and the microphone

NG	? Go to step 1

1. 1
   Check again after replacing the microphone

   

2. 2
   Test after replacing the multimedia connector

   GOOD	? Replace the multimedia connector

   
   

   NG	? Go to step 2

3. 3
   Check the vehicle USB cable.

   GOOD	? Replace the vehicle USB cable

   
   

   NG	? Go to step 3

4. 4
   Check the multimedia connector

   Tester connection	Condition	Specified condition
   AVN H/U CON-B8 - Multimedia connector CON-C2	Always	Below 1?
   AVN H/U CON-B21 - Multimedia connector CON-C1	Always	Below 1?
   AVN H/U CON-B20 - Multimedia connector CON-C3	Always	Below 1?
   AVN H/U CON-B9 - Multimedia connector CON-C7	Always	Below 1?

R-8: Check after replacing the AVN H/U.

Troubleshooting (Flow Chart Type)

There are six areas where a problem may occur: power supply system, LCD/LED system, sound system, radio system, USB/iPod/AUX system, and Bluetooth system. Troubleshooting helps narrow down the specific cause of the problem.