Collision Mitigation Braking System (CMBS) Symptom Troubleshooting Index
Symptom
Diagnostic procedure
Also check for
CMBS OFF switch does not turn On/turn Off (CMBS indicator does not change)
An open or increased resistance in the wire
A short in the wire
The MID does not indicate when the CMBS OFF switch is operated
An open or increased resistance in the wire
A short in the wire
The buzzer does not sound
Do the gauge control module self-diagnostic function procedure.
  
The buzzer does not sound when the CMBS OFF switch is operated
Do the gauge control module self-diagnostic function procedure.
  
Though CMBS operates, the information is not displayed on the MID
Do the gauge control module self-diagnostic function procedure.
  
The CMBS operates frequently
Driving conditions, weather, environmental influence
The CMBS operated without danger of collision
Driving conditions, weather, environmental influence
The CMBS did not operate
Driving conditions, weather, environmental influences
Undetectable environment
CMBS indicator does not come on
Do the gauge control module self-diagnostic function procedure.
  
CMBS indicator (on the MID) does not go off
Symptom troubleshooting.