Adaptive Cruise Control (ACC) Unit DTC 48: Cal FR Brake Fluid Pressure Sensor Circuit Open/Short

1. Turn the ignition switch ON (II).

1. Clear the DTCs with the HDS.

1. Watch the adaptive cruise control (ACC)/LKAS indicator.

Does the adaptive cruise control (ACC)/LKAS indicator stay off?

YES | - | Intermittent failure. The system is OK at this time. Check for loose or poor connections.■
NO | - | Go to Step 4 .

1. Check for DTCs with the HDS.

Is DTC 48 indicated?

YES | - | Go to Step 5 .
NO | - | Troubleshoot the indicated DTC(s). If there are no DTCs, the system is OK at this time.■

1. Check the right front brake fluid pressure voltage (RF BRAKE P) with the HDS.

Is there about 0.5 V?

YES | - | Go to Step 6 .
NO | - | Go to Step 13 .

1. Do the brake booster test.

1. Press the brake pedal with about 314 N (32 kgf, 71 lbf) pressure.

1. Check the right front brake fluid pressure voltage (RF BRAKE P) with the HDS.

Is there about 2.5 V?

YES | - | The right front brake fluid pressure signal is OK, check for loose or poor connections. If OK, replace the adaptive cruise control (ACC) unit. ■
NO | - | Go to Step 9 .

1. Turn the ignition switch OFF.

1. Disconnect the 20P connector from the adaptive cruise control (ACC) unit.

1. Check for continuity between the adaptive cruise control (ACC) unit 20P connector No. 5 terminal and body ground.

Is there continuity?

YES | - | Repair a short to ground in the wire between the adaptive cruise control (ACC) unit and the right front pressure sensor.■
NO | - | Go to Step 12 .

1. Disconnect the 3P connector from the left front pressure sensor.