Audio Diagnostic Test Procedures

When ever a radio malfunction occurs;
1. First check FUSES in Fuse Block:
a. Fuse 1, Illumination
b. Fuse 2, Illumination
c. Fuse 4, Ignition feed
d. Fuse 18, Radio Memory Feed, Hot at all times
2. Verify, the radio wire harness are properly connected before starting normal diagnosis and repair procedures. Refer to Audio Diagnostic Charts, System Schematic.