Chart B5 - Vacuum Fluorescent Power Supply Problem

Fig 1: Chart B5, Vacuum Fluorescent Power Supply Problem Schematic

You are at this chart because odometer, with key on, read all 8's or was blank, but the high beams cycled when dimmer switch was activated. These symptoms indicate a problem with vacuum fluorescent power supply, located in IPC, display components, or related wiring.

NOTE: Test numbers refer to test numbers on diagnostic chart.

Determines if fault is due to a bad CCDIC component.
Determines if fault is due to a bad radio component.
Checks for ground integrity to Instrument Panel Cluster (IPC).
Determines if fault is due to a bad IPC or a short to ground in one of vacuum fluorescent power wires to CCDIC or radio.

Fig 2: Flow Chart B5, Vacuum Fluorescent Power Supply Problem

Fig 3: Flow Chart B5, Vacuum Fluorescent Power Supply Problem