Test L: No Sound From All Speakers
PINPOINT TEST L: NO SOUND FROM ALL SPEAKERSL1-L3:
L3-L4:
Normal Operation
The rear control unit (RCU) (also referred to as the audio unit) sends an amplified, varying AC voltage to the speakers. The AC voltage is converted to sound through the magnetic coil and speaker cone. Each speaker has a signal and return circuit and the number of speakers varies, depending on the system configuration.
Possible Causes
- RCU
- Circuit 655 (RD/OG) short to voltage
- Circuit 1093 (TN/RD) short to voltage
- Circuit 262 (BN/PK) short to voltage
- Digital transmission range (TR) sensor