( TL19E00H15300000000HBAT00 )

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.

Adaptive cruise control (ACC) system troubleshooting.
Test the CMBS OFF switch.
Do the gauge control module self-diagnostic function.

- 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.

Adaptive cruise control (ACC) system troubleshooting.
Test the CMBS OFF switch.
Do the gauge control module self-diagnostic function.

- An open in the wire
- A short in the wire

The buzzer does not sound | 1. 2. | Adaptive cruise control (ACC) system troubleshooting. Do the gauge control module self-diagnostic function. |
The buzzer does not sound when the CMBS OFF switch is operated | 1. 2. | Adaptive cruise control (ACC) system troubleshooting. Do the gauge control module self-diagnostic function. |
The MID does not indicate with the CMBS operating | 1. 2. | Adaptive cruise control (ACC) system troubleshooting. Do the gauge control module self-diagnostic function. |
The CMBS system operates frequently | 1. 2. 3. 4. | Adaptive cruise control (ACC) system troubleshooting. Check the millimeter wave radar. Check the front emblem for warpage. Check the wheel alignment. | Driving condition, weather, environmental influence
The CMBS system operated without danger of collision | 1. 2. 3. 4. | Adaptive cruise control (ACC) system troubleshooting. Check the millimeter wave radar. Check the front emblem for warpage. Check the wheel alignment. | Driving condition, weather, environmental influence

The CMBS system didn't operate

1.
2.
3.
4.

Adaptive cruise control (ACC) system troubleshooting.
Check the millimeter wave radar.
Check the front emblem for warpage.
Check the wheel alignment.

- Driving conditions, weather, environmental influences
- Undetectable environment

CMBS indicator does not come on | Do the gauge control module self-diagnostic function |
CMBS indicator does not go off | Symptom troubleshooting |
HDS does not communicate with the adaptive cruise control (ACC) unit or the vehicle | Troubleshoot the DLC circuit. |