Adaptive Cruise Control (ACC) DTC Troubleshooting: 50
Cal FR Brake Fluid Pressure Sensor Malfunction
NOTE: In this troubleshooting, you will operate the ADAPTIVE CRUISE CONTROL (ACC) BRAKE (brake actuator 3) continuously four or five
times using the FUNCTION TEST with the HDS. During this operation, the VSA modulator-control unit may stop working. This means the VSA
modulator-control unit has shut down to protect the system from overheating during continuous operation.
If the VSA modulator-control unit stops working, wait for a few minutes until the VSA modulator-control unit cools down, then restart the
1. Start the engine, and press the MAIN switch ON.
2. Clear the DTCs with the HDS.
3. Select ADAPTIVE CRUISE CONTROL (ACC) from the DRIVING SUPPORT menu, then enter the FUNCTION TEST.
4. Activate BRAKE ACTUATOR 3 from the FUNCTION TEST menu.
5. Watch the ACC indicator.
Does the ACC indicator come on?
Go to step 9.
Go to step 6.
6. Activate BRAKE ACTUATOR 3 again.
7. While the brake actuator is operating, press the brake pedal.
8. Watch the ACC indicator.
Does the ACC indicator stay come on?
Go to step 9.
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
9. Check for DTCs with the HDS.
Is DTC 50 indicated?
Go to step 10.
Troubleshoot the indicated DTC(s). If there are no DTCs, the system is OK at this time.?
10. Without the brake pedal pressed, check the right front brake fluid pressure voltage (RF BRAKE P) with the HDS.