Chart B, Color CRT Blank With Ignition On (CRT Equipped TORONADO & TROFEO)

Fig 1: Wiring Schematic (CRT Toronado & Trofeo)

Courtesy of GENERAL MOTORS CORP.

NOTE: Test numbers refer to numbers on diagnostic chart.

1. This step checks power supplies to CRT and CRT controller.
2. This step determines if CRT system is awake and operating.
3. This step checks voltage on data line from CRT to CRT controller.
4. This step checks if CRT or CRT controller is causing the low voltage reading on data line.

Fig 2: Chart B - Troubleshooting Diagram (CRT Toronado & Trofeo)

Courtesy of GENERAL MOTORS CORP.