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Home >> Buick >> 1992 >> Roadmaster Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes - Pcm/BCM) >> BCM Trouble Code Charts >> Code C710, CRTC Switching Circuit Problem >> Notes
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Code C710, CRTC Switching Circuit Problem: Notes

WARNING: This page is about a different car, the 1992 Oldsmobile Toronado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Test numbers refer to numbers on diagnostic chart.
  1. CRT/DID monitor needs communication from CRT/DID controller to initially glow. If CRT monitor lights initially, it is receiving signals from controller.
  2. If CRT/DID is blank at times and Code C710 is set, monitor is not receiving correct data line signal.
  3. Checks voltage on CRT controller-to-CRT/DID data line. Normal voltage fluctuates slightly between 1.5 and 4.5 volts.
  4. Checks whether CRT/DID or CRT controller is causing low voltage reading on data line.
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