Test J

PINPOINT TEST J: POOR QUALITY/DISTORTED SOUND OR NO SOUND FROM ONE OR MORE SPEAKERS (NOT ALL SPEAKERS) - VNR

Test J1-J2:

Test J3-J4:

Test J5-J8:

Test J8-J9:

Test J10:

Normal Operation
The audio unit directs the audio signals to the 8 channel amplifier and then to the speakers through separate positive and negative circuits for each of the five audio channels: LF, RF, LR, RR, and the subwoofer. The audio unit provides internal circuit protection for shorts to ground, shorts to B+ battery or shorts between any output circuits as well as providing a power on signal to the amplifier. Circuit 173 (DG/VT) sends an enable signal to the 8 channel amplifier.

Possible Causes
- CJB fuse 1 (30A)
- speaker(s)
- high resistance or short to ground in speaker and amplifier circuits
- amplifier
- audio unit