DTC 64: CMBS OPERATION ERROR (EXCESSIVE OPERATION)
1. Remove the front grille (see FRONT BULKHEAD COVER REPLACEMENT ).
2. Inspect the frame for warpage, and check the installation of the millimeter wave
radar and the main bracket.
Is the installation and the frame OK?
YES -Go to step 3.
NOTE: If the CMBS operates frequently, DTC 64 is stored.
2010 Acura MDX
2010-12 BRAKES Collision Mitigation Braking System (CMBS) - MDX
NO -Reinstall the components correctly, or replace if damaged, then go to step 3.
3. Turn the ignition switch to ON (II), then wait for 10 seconds.
4. Aim the millimeter wave radar (see MILLIMETER WAVE RADAR AIMING ).
5. Clear the DTCs with the HDS (see General Troubleshooting Information ).
6. Press the MAIN switch ON.
7. Watch the ACC and CMBS indicators.
Do both indicators come on?
YES -Go to step 8.
NO -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
8. Clear the DTCs with the HDS (see General Troubleshooting Information ).
9. Watch the CMBS indicator.
Does the CMBS indicator come on?
YES -Go to step 10.
NO -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
10. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 64 indicated?
YES -Check for loose or poor connections. If OK, update the ACC unit (see ACC UNIT
UPDATE ), then recheck. If the ACC unit was already updated, replace the ACC unit,
(see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION )
NO -Troubleshoot the indicated DTC(s).
1. Remove the front grille (see FRONT BULKHEAD COVER REPLACEMENT ).
2. Inspect the frame for warpage, and check the installation of the millimeter wave
radar and the main bracket.
Is the installation and the frame OK?
YES -Go to step 3.
NOTE: If the CMBS operates frequently, DTC 64 is stored.
2010 Acura MDX
2010-12 BRAKES Collision Mitigation Braking System (CMBS) - MDX
NO -Reinstall the components correctly, or replace if damaged, then go to step 3.
3. Turn the ignition switch to ON (II), then wait for 10 seconds.
4. Aim the millimeter wave radar (see MILLIMETER WAVE RADAR AIMING ).
5. Clear the DTCs with the HDS (see General Troubleshooting Information ).
6. Press the MAIN switch ON.
7. Watch the ACC and CMBS indicators.
Do both indicators come on?
YES -Go to step 8.
NO -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
8. Clear the DTCs with the HDS (see General Troubleshooting Information ).
9. Watch the CMBS indicator.
Does the CMBS indicator come on?
YES -Go to step 10.
NO -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
10. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 64 indicated?
YES -Check for loose or poor connections. If OK, update the ACC unit (see ACC UNIT
UPDATE ), then recheck. If the ACC unit was already updated, replace the ACC unit,
(see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION )
NO -Troubleshoot the indicated DTC(s).
