15-1

SH-AWD DTC Troubleshooting: 15-1

DTC 15-1: Longitudinal Acceleration Sensor Malfunction

NOTE: Before you troubleshoot, review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Clear the DTC with the HDS.

3. Test-drive the vehicle for 2 minutes in a vehicle speed is kept constant at 19 mph (30 km/h).

4. Check for DTCs in the VSA system with the HDS.

Are any longitudinal acceleration sensor DTCs indicated?
YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 5.


5. Check for DTCs with the HDS.

Is DTC 15-1 indicated?
YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time.


6. Test-drive the vehicle with an assistant. When accelerating, check the LONGITUDINAL ACCELERATION SENSOR in the SH-AWD mode menu DATA LIST with the HDS.

Does the sensor value change when acceleration?
YES - Go to step 7.

NO - Update the SH-AWD control unit if it does not have the latest software, SH-AWD Control Unit Update or substitute a known-good SH-AWD control unit, Service and Repair and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit. Service and Repair


7. Park the vehicle on a level surface.

8. Check the LONGITUDINAL ACCELERATION SENSOR in the SH-AWD mode menu DATA LIST with the HDS.

Is there 0.1G or less?
YES - Go to step 9.

NO - Do the yaw rate-lateral/longitudinal acceleration neutral position memorization, SH-AWD Yaw Rate-Lateral/Longitudinal Acceleration Neutral Position Memorization and recheck.


9. Check the LONGITUDINAL ACCELERATION SENSOR in the VSA DATA LIST with the HDS.

Is there 0.1G or less?
YES - Update the SH-AWD control unit if it does not have the latest software, SH-AWD Control Unit Update or substitute a known-good SH-AWD control unit, Service and Repair and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit. Service and Repair

NO - Replace the yaw rate-lateral/longitudinal acceleration sensor. VSA System Yaw Rate-Lateral/Longitudinal Acceleration Sensor Replacement