No PCI Messages From DVD/CD Changer

Test 1:

Test 2 - 5:

SYMPTOM
NO PCI MESSAGES FROM DVD/CD CHANGER

WHEN MONITORED
With the ignition on and the radio on.

SET CONDITION
If the DRB interrogates the DVD/CD Changer and does not receive the proper response from the DVD/CD Changer.

POSSIBLE CAUSES
- DVD/CD changer (DIN) cable
- DVD/CD changer PCI bus circuit open
- Ignition switch output circuit open
- Radio ground CKT open
- DVD/CD changer