DTC 15-1: 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: Before you troubleshoot, review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle with an assistant. When accelerating, check the LONGITUDINAL ACCELERATION SENSOR in the DATA LIST with the HDS.
Does the sensor value change when acceleration?

YES -Go to step 4.

NO -Replace the yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Park the vehicle on a level surface.
Check the LONGITUDINAL ACCELERATION SENSOR in the DATA LIST with the HDS.
Is there 0.1 G or less?

YES -Go to step 6.

NO -Do the yaw rate-lateral/longitudinal acceleration neutral position memorization (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION NEUTRAL POSITION MEMORIZATION ). If the DTC returns, replace the SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ).
Test-drive the vehicle for 2 minutes in a vehicle speed is kept constant at 19 mph (30 km/h).
Check for DTCs with the HDS.
Is DTC 15-1 indicated?

YES -Replace the yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).

NO -Intermittent failure, the system is OK at this time. If the DTC returns, replace the SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ).