Section 267 (Audio System): Troubleshooting

WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the internal mechanism (computer part) of the audio system, be careful that no part of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the replacement part (spare part).

HINT:

This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during system operation and was prepared on the assumption of system component troubles (except for the wires and connectors, etc.).

Always inspect the trouble taking the following items into consideration.

Open or short circuit of the wire harness
Connector or terminal connection fault

TROUBLESHOOTING CHART

	Problem	No.
Radio	Radio not operating when power switch turned to 'ON'.	1
	Display indicates when power switch turned to 'ON', but no sound (including 'noise') is produced.	2
	Noise present, but AM - FM not operating.	3
	Any speaker does not work.	4
	Any AM or FM does not work.	5
	Few preset turning bands.	5
	Reception poor.	6
	Sound quality poor.	7
	Preset memory disappears.	8
Tape Player	Cassette tape cannot be inserted.	9
	Cassette tape inserted, but no power.	10
	Power coming in, but tape player not operating.	11
	Any speaker does not work.	12
	Sound quality poor.	13
	Tape jammed, malfunction with tape speed or auto-reverse.	14
	Cassette tape will not eject.	15
CD Player	CD cannot be inserted.	16
	CD inserted, but no power.	17
	Power coming in, but CD player not operating.	18
	Sound jumps.	19
	Sound quality poor (Volume faint).	20
	Any speaker does not work.	21
	CD will not be ejected.	22
Power Amplifier	No power coming in.	23
	Power coming in, but power amplifier not operating.	24
	Any speaker does not work.	25
Noise	Noise occurs	26
	Noise produced by vibration or shock while driving.	27
	Noise produced when engine starts.	28

The term "AM" includes LW, MW and SW, and the term "FW" includes UKW.

RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO "ON"

Fig 1: Flow Chart (Radio Radio Not Operating When Power Switch Turned To "On")
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Radio DISPLAY INDICATES WHEN POWER SWITCH TURNED TO"ON", BUT NO SOUND (INCLUDING "NOISE") IS PRODUCED

Fig 2: Flow Chart (Radio Display Indicates When Power Switch Turned TO"On")
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Radio NOISE PRESENT, BUT AM-FM NOT OPERATING

Fig 3: Flow Chart (Radio Noise Present, But Am-Fm Not Operating)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Radio ANY SPEAKER DOSE NOT WORK

Fig 4: Flow Chart (Radio Any Speaker Dose Not Work)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Radio ANY AM OR FM DOES NOR WORK FEW PRESET TUNING BANDS

Fig 5: Flow Chart (Radio Any Am Or FM Does Nor Work Few Preset Tuning Bands)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Radio PRESENT MEMORY DISAPPEARS

Fig 8: Flow Chart (Radio Present Memory Disappears)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player CASSETTE TAPE CANNOT BE INSERTED

Fig 9: Flow Chart (Tape Player Cassette Tape Cannot Be Inserted)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape CASSETTE TAPE INSERTED, BUT NO POWER

Fig 10: Flow Chart (Tape Cassette Tape Inserted, But No Power)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player POWER COMING IN, BUT TAPE PLAYER NOT OPERATING

Fig 11: Flow Chart (Tape Player Power Coming In, But Tape Player Not Operating)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player ANY SPEAKER DOES NOT WORK

Fig 12: Flow Chart (Tape Player Any Speaker Does Not Work)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player SOUND QUALITY POOR (VOLUME FAINT)

Fig 13: Flow Chart (Tape Player Sound Quality Poor (Volume Faint))
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO-REVERSE

Fig 14: Flow Chart (Tape Player Tape Jammed Malfunction With Tape Speed Or Auto-Reverse)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Tape Player CASSETTE TAPE WILL NOT BE EJECTED

Fig 15: Flow Chart (Tape Player Cassette Tape Will Not Be Ejected)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player CD CANNOT BE INSERTED

Fig 16: Flow Chart (CD Player CD Cannot Be Inserted)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player CD INSERTED, BUT NO POWER

Fig 17: Flow Chart (CD Player CD Inserted, But No Power)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player POWER COMING IN, BUT CD PLAYER NOT OPERATING

Fig 18: Flow Chart (CD Player Power Coming In, But CD Player Not Operating)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player SOUND QUALITY POOR (VOLUME FAINT)

Fig 20: Flow Chart (CD Player Sound Quality Poor (Volume Faint))
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player ANY SPEAKER DOES NOT WORK

Fig 21: Flow Chart (CD Player Any Speaker Does Not Work)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CD Player CD WILL NOT BE EJECTED

Fig 22: Flow Chart (CD Player CD Will Not Be Ejected)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Power Amplifier NO POWER COMING IN

Fig 23: Flow Chart (Power Amplifier No Power Coming In)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
POWER COMING IN, BUT WOOFER (POWER) AMPLIFIER NOT OPERATING

Fig 24: Flow Chart (Power Coming In, But Woofer (Power) Amplifier Not Operating)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Power Amplifier ANY SPEAKER DOES NOT WORK

Fig 25: Flow Chart (Power Amplifier Any Speaker Does Not Work)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING

Fig 27: Flow Chart (Noise Noise Produced By Vibration Or Shock While Driving)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOISE PRODUCED WHEN ENGINE STARTS

Fig 28: Flow Chart (Noise Noise Produced When Engine Starts)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002