Toyota PT546-00140 Troubleshooting Manual Download Page 18 | Manualshive

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19

AUX

Sound quality poor (volume faint).

Is the volume of the AUX component set to a
sufficient level?

Temporarily connect another stereo mini-plug
cable.
Is the function OK?

Stereo mini-plug cable faulty.

Is there continuity in the AUX wire harness?

Head unit faulty.

AUX wire harness faulty.

Yes

No

No

No

Adjust the volume of the AUX
component.

Yes

Yes

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Summary of Contents for PT546-00140

Page 1: ...14Scion Display Audio PT546 00140 TROUBLESHOOTING GUIDE Rev A 5 17 2013 ...

Page 2: ...und quality poor 7 Cannot set station select button 7 Preset memories disappear 8 Analog reception can receive but HD radio can not receive 9 HD reception is poor and sound is mute frequently 10 CD PLAYER CD cannot be inserted 11 Power coming in but CD player not operating 12 Sound jumps 13 Sound quality poor Volume faint 14 CD will not eject 15 NOISE Noise produced by vibration or shock while dri...

Page 3: ...if the fuse is OK Is ACC applied to head unit Is B applied to head unit Check if GND wire harness side to head unit is OK Head unit faulty Replace fuse ACC wire harness faulty B wire harness faulty GND faulty Yes No No Yes No No Yes Yes ...

Page 4: ...he function OK Head unit faulty Speaker wire harness faulty Speaker faulty Yes No No Yes No Yes Check volume control Check fade balance settings Check for proper connection to head unit Head unit faulty Yes No No Yes Yes No Head unit faulty Please connect proper to head unit Do non functioning speakers produce hiss Head unit faulty ...

Page 5: ...ck fade balance settings No Please set up a fade and balance settings correctly Yes Check treble bass settings No Please set up a treble and bass settings correctly Dose the setting of the vehicle type match Please set up a vehicle type correctly No Yes Check input the device Check for bad speakers No No No Input device is faulty Yes ...

Page 6: ...eception poor volume faint few preset tuning bands Problem with radio wave signals or location Are both AM and FM defective Head unit faulty Speaker wire harness faulty Speaker faulty Poor signals poor location Head unit faulty Go to No 2 Yes Yes No No No Yes Yes No No Yes Check antenna installation to vehicle Check antenna connection to head unit Yes Yes No Please install a antenna to vehicle Ple...

Page 7: ...operly installed Temporarily install another antenna Is the sound quality OK 6 A Is the sound quality certain Is the sound quality with other modes good Head unit faulty Go to step 6 A Go to No 4 Install properly Antenna faulty Head unit faulty Poor signals poor location No Yes Yes Yes No Yes No Yes No No ...

Page 8: ...of HD active Problem with radio wave signals or location Is analog reception good Head unit faulty Replace fuse ACC and B wire harness faulty Check if GND wire harness side to head unit is OK GND faulty Head unit faulty Set HD ON at audio settings Poor signals poor location Head unit faulty Go to No 6 Yes No No No Yes Yes No Yes Yes No Yes No No Yes Check if the station can broadcast HD Yes The re...

Page 9: ...nna wire harness Is there analog reception is good 9 A Is there continuity in speaker wire harness Temporarily install another speaker Is the function OK Head unit faulty Poor signals poor location Antenna wire harness faulty Head unit faulty Go to No 6 Speaker wire harness faulty Speaker faulty Yes No No Yes Yes No Yes No No Yes ...

Page 10: ...lready inserted Is B applied to head unit Is ACC applied to head unit Check if GND wire harness side to head unit is OK Head unit faulty Eject CD B wire harness faulty ACC wire harness faulty GND wire harness faulty Yes No Yes Yes Yes No No No ...

Page 11: ...perating normally Is temperature inside interior panel hot Head unit faulty Insert CD the correct side up CD faulty Go to step 9 A Protective circuit in operation It is necessary for the internal temperature of the head unit until to fall No Yes No Yes No No Yes Yes Is the correct CD type shape inserted Insert the correct CD type shape Yes No ...

Page 12: ...y vibration Functions OK if different CD inserted Head unit faulty Yes Yes No No Yes Yes No No Functions OK if another Disc inserted Check another modes AM FM etc Is radio operating normally Disc faulty Is speaker properly installed Temporarily install another speaker Is the function OK Speaker faulty Install properly Head unit faulty CD faulty ...

Page 13: ...sembly Replace fuse B wire harness faulty Check if GND wire harness side to radio receiver assembly is OK GND wire harness faulty ACC wire harness faulty Head unit faulty Yes No Yes Is speaker properly installed With vehicle stopped lightly tap headunit Is noise produced No Install properly Noise produced by static electricity accumulating in the vehicle body No Plug properly Yes Head unit faulty ...

Page 14: ...tors Noise OK if another head unit Head unit faulty Yes No Whistling noise occurs when A C is operation Scratching noise occurs during sudden acceleration driving on rough roads or when ignition switch is turned on Murmuring sound stops when engine stops Scratching noise occurs while engine is running and continues a while even after engine stops Yes Yes Yes Yes No No No Other type of noise Yes No...

Page 15: ...oil Does the noise occur even pulling out the defogger terminal Does the noise occur even pulling out the antenna terminal Does the noise occur even pulling out the antenna cord from the headunit No Correct grounding Processing the ground properly Mixing into the defogger cable Improvement of wiring routing of defogger code The parts which added have a problem Use different parts Mixing into the a...

Page 16: ...y replacing the antenna cord Exchange the antenna cord No A noise jumps at the antenna cable line via a defogger terminal part from the outbreak source and mixes it Please identify a noise source from the wiring around the defogger terminal ...

Page 17: ...re harness installed properly Install the AUX wire harness properly Is there continuity in the AUX wire harness Temporarily install another AUX stereo jack adapter assy Is the function OK Car AUX stereo jack faulty Head unit faulty Yes No Yes Yes No Insert the mini plug into the car AUX jack properly No AUX wire harness faulty No Yes ...

Page 18: ...nt set to a sufficient level Temporarily connect another stereo mini plug cable Is the function OK Stereo mini plug cable faulty Is there continuity in the AUX wire harness Head unit faulty AUX wire harness faulty Yes No No No Adjust the volume of the AUX component Yes Yes ...

Page 19: ... higher Is the vehicle harness connected to the head unit properly Connect the vehicle harnesses to the head unit properly Temporarily install another head unit Is the function OK Head unit faulty Fault in the speed pulse signal line Check the speed pulse oscillation on the signal wire Yes No No No Yes Yes ...

Page 20: ...all other modes operate normally Go to No 2 Is the CD sound quality normal Go to No 13 Temporarily install another head unit The sound quality still poor Check the files stored on the USB device Head unit faulty No Yes No Yes poor Yes No ...

Page 21: ...Is there continuity in the Vehicle s USB harness Head unit faulty No Yes No USB device faulty Vehicle USB harness faulty Yes Is the USB cable connected to the head unit properly USB connection for extension box is different from USB connection for BASE only No Connect USB cable to the head unit properly Yes ...

Page 22: ... 4th generation ver 1 0 4 iPod nano 5th generation ver 1 0 2 iPod nano 6th generation ver 1 0 iPod touch 1st generation ver 3 1 3 iPod touch 2nd generation ver 4 1 iPod touch 3th generation ver 5 0 iPod touch 4th generation ver 5 0 iPhone ver 3 1 3 iPhone 3G ver 4 1 iPhone 3GS ver 4 1 iPhone 4 ver 6 1 Please note that no guarantee applies to iPod operations and future updated versions of iPod soft...

Page 23: ...is head unit will not charge 3G iPod which doesn t support USB charging Temporary connect another USB memory which has a power indicator The indicator is lighted Does the iPod can charge by any other chraging device Is there continuity both in the vehicle USB Cable and the USB iPod cable Head unit faulty Cable faulty Yes ...

Page 24: ...played Is the microphone and wire harness installed properly Is there continuity in the microphone Is there continuity in the wire harness Install the microphone properly Microphone faulty Wire harness faulty Head unit faulty Yes No Yes No Yes No ...

Page 25: ... Is the extension box wire harness connected the head unit properly Are the vehicle harness connected to the extension box properly No Yes Head unit does not recognize the extension box Set DIAGNOSIS MODE and turn off ACC and restart Yes Yes No Connect the wire harness properly Yes No When an extension box is not installed this function does not work Connect the vehicle harness properly No Is ther...

Page 26: ......

Page 27: ...een Blue White Stripe Push Switch Check Check the detection result and the number of pushed SW Result Pushed SW Rotary Switch Check The SW is being turned BACK Function Check Setting A Microphone Voice Recognition Check Please check to see that each color name corresponds to each color on the bar BACK Color Bar Check Mode BACK Hands Free Voice Quality Setting 7 8 9 4 5 6 1 2 3 0 Set 0 0 0000 INT B...

Page 28: ......

Page 29: ......

Page 30: ...CONNECTOR INFORMATION A Powers and Speakers 2 3Ⅱ 10P 6P B AVC LAN 0 64 12P C EXTENSIONS 0 64 28P D USB TOYOTA USB 2 0 4P E Rear camera 0 64 16P ...

Page 31: ...F EXTENSIONS 0 64 24P Ｇ Antenna HFC 2P 0 64 1P REAR VIEW A D B C G E F ...

Page 32: ...PT546 00140 ...

Page 33: ...adio Phillips Screwdriver Phillips Screwdriver Bolts x2 Bolts x2 Receiver Assembly Radio Installation Manual iQ Connect this end to the radio Connect this end to the vehicle Radio Bracket R Bolts M5x8 x4 Radio Bracket L Bolts M5x8 x4 ...

Page 34: ...adio Bracket RH Radio 28 Pin HFC antenna 6 Pin 10 Pin USB Bolts 2 Bolts 2 Ratchet Extension Socket 10mm Connect the harness connectors to the radio Ratchet Extension Socket 10mm Remove the and save the 4 bolts and remove the radio brackets R and L from the interior panel ...

Page 35: ...tape Connect this end to radio Connect this end to the vehicle Ratchet extension 10mm socket Connect the antenna cable and connectors to the radio Bolts 4 Phillips Screwdriver Radio Bracket R Bolts M5 8 3 Radio Bracket L Bolts M5 8 3 ...

Page 36: ...onnect this end to the radio Connect this end to the vehicle Screws 2 Screws 2 Phillips Screwdriver Connect the harness connectors to the radio Phillips Screwdriver Radio Bracket L Bolts M5 8 3 Radio Bracket R Bolts M5 8 3 ...

Page 37: ... Bracket L Bolts M5 8 3 Bolts M5 8 3 Radio Phillips Screwdriver Ratchet Extension Socket 10mm Bolts 2 Bolts 2 Connect the antenna cable and the harness connectors to the radio Remove the tape 28 Pin HFC antenna 6 Pin 10 Pin USB ...

Page 38: ...Wiring Diagram xB xD iQ MAIN ANT Bu Acc ILM AMP B SPD ILM RADIO ASSY 14SCION BASE USB Jack Cable Assy CDP1422 Cable Assy CDP1420 BuleTooth Steering SW Mini Jack Cable Assy CDP1421 FL FR Speaker ANT B RL RR Speaker REAR CAMERA ...

Page 39: ...ASE Electrical Wiring Diagram FR S tC MAIN ANT ILM RADIO ASSY 14SCION BASE USB Jack BuleTooth Steering SW Mini Jack FL FR Speaker ANT B RL RR Speaker REAR CAMERA FL FR WF Speaker FR S tC only EXT AMP B B ACC ILL ...

Page 40: ...T Bu Acc ILM AMP B SPD ILM GPS ANT RADIO ASSY 14SCION PREMIUM EXT Module USB Jack Cable Assy CDP1422 Cable Assy CDP1420 BuleTooth Steering SW Mini Jack Cable Assy CDP1421 FL FR Speaker ANT B RL RR Speaker USB Jack REAR CAMERA BT ANT Cable Assy USB 90980 12915 ...

Page 41: ...R S tC MAIN ANT ILM GPS ANT RADIO ASSY 14SCION PREMIUM USB Jack BuleTooth Steering SW Mini Jack FL FR Speaker ANT B RL RR Speaker REAR CAMERA FL FR WF Speaker FR S tC only EXT Module USB Jack BT ANT USB 90980 12915 Cable Assy EXT AMP B B ACC ILL ...

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