Headunit-High: CID Is Blank and "NO SIGNAL" Is Displayed. Intermittently the Central Information Display (CID) is blank and "NO SIGNAL" is displayed on the CID. z Fault Code B7F8C3 "no response from CID (HW error: loss of CID communication)" is stored in the HU-H Note: If Fault Code E1C440 "Headunit Reset" is also stored in the HU-H, this Service Information is not effective! Follow relevant test plan using ISTA diagnosis. Software error in the HU-H
