Pinpoint Test 2

PINPOINT TEST 2: THE AUDIO SYSTEM ILLUMINATION IS INOPERATIVE

Step 1 - 2:

Normal Operation
When the instrument cluster detects a headlamps ON message, it sends a variable voltage to the audio unit through circuit (R/B). The audio unit is grounded through circuit (B).

Possible Causes
- circuit (R/B) open
- circuit (B) open
- audio unit