Toyota PT546-00140, Troubleshooting Manual

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18 AUX Cannot select AUX mode.
Is the mini-plug from the portable audio
component properly connected to the car AUX
jack?
Is the AUX wire 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