Adaptive Cruise Control (ACC) unit DTC 44: Cal FL Brake Fluid Pressure Sensor Circuit Open/Short Clear the DTCs with the HDS. 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 3 .
Check for DTCs with the HDS. Is DTC 44 indicated?
YES | - | Go to Step 4 .
NO | - | Troubleshoot the indicated DTC.■
Check the left front brake fluid pressure voltage (VPRFL) with the HDS. Is there about 0.5 V?
YES | - | Go to Step 5 .
NO | - | Go to Step 8 .
Do the brake booster test. Press the brake pedal with about 314 N (32 kgf, 71 lbf) pressure. Check the left front brake fluid pressure voltage (VPRFL) with the HDS. Is there about 2.5 V?
YES | - | The left 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 8 .
Turn the ignition switch OFF. Disconnect the 20P connector from the adaptive cruise control (ACC) unit. 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 left front pressure sensor.■
NO | - | Go to Step 11 .
Disconnect the 3P connector from the left front pressure sensor. |