DTC 28-21: Longitudinal Acceleration Sensor (Inside of Modulator-Control Unit) Output Signal Malfunction

• No other DTCs detected
• ABS/VSA function not in operation

With the Driving Pattern:

• 1.

  Start the engine.

• 2.

  Test-drive the vehicle at 7 mph (11 km/h) or more for at least 20 seconds.

  (Be careful of the surrounding traffic conditions.)

• 1 drive cycle
• ABS indicator on*
• VSA indicator on
• Brake system indicator (amber) on*

• Stop ABS function*
• Stop VSA function*
• Stop TCS function*
• Stop hill start assist function
• Stop brake assist function*
• Stop hydraulic brake booster function*

• VSA modulator-control unit internal failure (Yaw rate-acceleration sensor internal circuit)