Central Timer Module: Operation: Messaging

The CTM uses the following messages received from other electronic modules over the PCI data bus:

• Airbag Deploy (ACM)
• Beep request (CMTC)
• Charging System Failure (PCM)
• Chime request (EMIC)
• Engine RPM (PCM)
• OK to Arm VTSS (PCM)
• Security indicator request (SKIM)
• System Voltage (PCM)
• Valid/Invalid Key (SKIM)
• Vehicle Distance (PCM)
• Vehicle Speed (PCM)