Diagnostic Procedure

STEP	INSPECTION		ACTION
1	Is CD inserted properly, label-side up?	Yes	Go to the next step.
1	Is CD inserted properly, label-side up?	No	Explain to the customer that CD should be inserted into the slot, label-side up.
2	Replace with a CD known to be good. Does the CD player/changer load the CD?	Yes	Go to the next step.
2		No	Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION .)
3	Visually inspect the CD. Is there any dirt, scratch or deformation on the CD? Is the CD a non-conventional disc?	Yes	Explain to the customer that the defective CD or non-conventional disc cannot be use.
3		No	Go to the next step.
4	Switch the ignition OFF (LOCK). Inspect the connection of the audio unit connector (24-pin). Inspect both audio unit connector and wiring harness-side connector for poor connection. (such as damaged/bent/pulled-out pins, corrosion) All the pins and connector normal?	Yes	Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION .)
4		No	If the audio unit connector/pin is wrong: Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION .) If the wiring harness-side connector/pin is wrong: Repair or replace the pins and/or the connector.