CMBS Symptom Troubleshooting Index

Symptom
Diagnostic procedure
Also check for
CMBS OFF switch does not turn on/turn off (CMBS indicator does not change)
1.
2.
3.
  • An open in the wire
  • A short in the wire
The MID does not indicate when the CMBS OFF switch is operated
1.
2.
3.
  • An open in the wire
  • A short in the wire
The buzzer does not sound
1.
2.
The buzzer does not sound when the CMBS OFF switch is operated
1.
2.
The MID does not indicate with the CMBS operating
1.
2.
The CMBS system operates frequently
1.
2.
3.
4.
Check the millimeter wave radar.
Check the front emblem for warpage.
Driving condition, weather, environmental influence
The CMBS system operated without danger of collision
1.
2.
3.
4.
Check the millimeter wave radar.
Check the front emblem for warpage.
Driving condition, weather, environmental influence
The CMBS system didn't operate
1.
2.
3.
4.
Check the millimeter wave radar.
Check the front emblem for warpage.
  • Driving conditions, weather, environmental influences
  • Undetectable environment
CMBS indicator does not come on
CMBS indicator does not go off
HDS does not communicate with the adaptive cruise control (ACC) unit or the vehicle