DTC 25: Yaw Rate Sensor Malfunction; DTC 26: Lateral Acceleration Sensor Malfunction; DTC 28: Longitudinal Acceleration Sensor Malfunction

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

These code(s) will set after a test drive if the sensor is installed incorrectly.
Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check for DTCs with the HDS.
Is DTC 86 indicated with DTC 25, 26, or 28 at the same time?

YES -Do the DTC 86 troubleshooting (see DTC 86: F-CAN COMMUNICATION MALFUNCTION ).

NO -Go to step 3.
Turn the ignition switch to LOCK (0).
Substitute a known-good yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle. Drive the vehicle at 19 mph (30 km/h) or more, and go a distance of 985 ft (300 m) or more.
Check for DTCs with the HDS.
Is DTC 25, 26, or 28 indicated?

YES -Go to step 9.

NO -Replace the original yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
Test-drive the vehicle. Drive the vehicle at 19 mph (30 km/h) or more, and go a distance of 985 ft (300 m) or more.
Check for DTCs with the HDS.
Is DTC 25, 26, or 28 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

NO -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .