NO.7 ALC FUNCTION IS INOPERATIVE


7	ALC function is inoperative / Possible DTC: -
Troubleshooting hints • Audio unit malfunction • Open or short circuit in vehicle speed signal wiring harness (e. g., instrument cluster) Note • Inspect the ALC function while driving the vehicle and playing a CD.


STEP	INSPECTION		ACTION
1	• Turn the ALC function on. • Inspect the ALC function operation while driving the vehicle. (ALC level 3) • Does the ALC system operate properly?.	Yes	The system is normal. Explain the ALC function to the customer.
1		No	Go to the next step.
2	• Verify the connection of the audio unit connector (24-pin, vehicle speed signal). • Inspect both the audio unit and wiring harness-side connector terminal 1I for a poor connection (such as damaged/pulled-out pins, corrosion). • Are all the pins normal?	Yes	Repair or replace the pins and/or connector.
2		No	Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)