35, " Sound Is Not Heard from S
ubwoofer (Premium System) " .
• The majority of the audio malfunctions are the result of outside causes (damaged CD, electromagnetic inter-
ference, etc.). Check the symptom s below to diagnose the malfunction.
• The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and oper-
ation of each piece of electrical equipment, and then determine the cause.
NOTE:
Noise resulting from variations in field strength, such as fading noise and multi-path noise, or external noise
from trains and other sources. It is not a malfunction.
• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun- tains or buildings blocking the signal.
• Multi-path noise: This noise results from the waves s ent directly from the broadcast station arriving at the
antenna at a different time from the waves that reflect off of mountains or buildings.
Noise Inspection INFOID:0000000004306967
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and determine the cause.
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
TYPE OF NOISE AND POSSIBLE CAUSE Symptom Check item
Audio system does not work properly. • Audio unit power supply circuit. Refer to
AV-23, " Power Supply
Circuit Inspection " .
• Audio unit. Refer to "Trouble Diagnosis" .
No sound can be heard from all speakers. Audio unit. Refer to "Trouble Diagnosis" .
No sound can be heard from one or several speakers. • Open or short in audio signal circuit between audio unit and front
speaker. Refer to AV-30, " Sound Is Not Heard from Front Door
Speaker (Base System) " or
AV-32, " Sound Is Not Heard from
Front Door Speaker or Tweeter (Mid Level and Premium Sys-
tem) " .
• Front speaker. Refer to AV-30, " Sound Is Not Heard from Front
Door Speaker (Base System) " or
AV-32, " Sound Is Not Heard
from Front Door Speaker or Tweeter (Mid Level and Premium
System) " .
• Open or short in audio signal circuit between audio unit and rear
speaker. Refer to AV-31, " Sound Is Not Heard from Rear Door
Speaker (Base System) " or
AV-33, " Sound Is Not Heard from
Rear Door Speaker (Mid Level and Premium System) " .
• Rear speaker. Refer to AV-31, " Sound Is Not Heard from Rear
Door Speaker (Base System) " or
AV-33, " Sound Is Not Heard
from Rear Door Speaker (Mid Level and Premium System) " .
• Tweeter (mid level and premium system) AV-32, " Sound Is Not
Heard from Front Door Speaker or Tweeter (Mid Level and Pre-
mium System) " or
AV-33, " Sound Is Not Heard from Rear Door
Speaker (Mid Level and Premium System) " .
• Subwoofer (premium system). Refer to AV-35, " Sound Is Not
Heard from Subwoofer (Premium System) " .
• Audio unit. Refer to AV-23, " Power Supply Circuit Inspection " .
No sound can be heard from radio or noise is heard. • Antenna feeder. Refer to
AV-42 .
• Antenna. Refer to AV-42 .
• Audio unit. Refer to AV-23, " Power Supply Circuit Inspection " .
MTC
N
O P
NG >> Check power supply circuit and 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].
Refer to PG-3, " Schematic " .
• If fuses are OK, reinstall fuses and GO TO 3.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary. OK >> GO TO 4.
NG >> Repair harness or connector. OK >> GO TO 5.
NG >> Repair harness or connector. OK >> Replace blower motor relay.
NG >> Repair harness or connector. OK >> GO TO 7.
NG >> Replace front blower motor. Refer to MTC-62, " Removal
and Installation " .
How to Handle Battery " .)
• Fuses (Refer to SRS-11, " Schematic " .)
• System component-to-harness connections
WORK FLOW User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation CONSULT-III — X Monitoring