ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY
HINT:
Using the Techstream to perform the Active Tests allows relays, VSVs and actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
(a) Connect the Techstream to the DLC3 with the power switch off.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Active Test
(e) When the vehicle's tires are lifted off the ground and the Techstream is used to operate the electric parking brake, check the condition of the rear tires.
(f) According to the display on the tester, perform the Active Test.
Chassis > ABS/VSC/TRAC/EPB > Active Test| Tester Display |
|---|
| PKB Lock Control |
| Tester Display |
|---|
| PKB Release Control |
If the result is not as specified, inspect the electric parking brake actuator.
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(g) Turn the power switch on (IG), push the electric parking brake switch to the lock side for 1 second and check that the parking brake indicator light (red) illuminates.
(h) Also, check that the brake warning light / yellow (minor malfunction) does not illuminate at this time.
Components
RemovalLexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Panoramic View Monitor System: Steering Angle Initialization Incomplete (C1694)
DESCRIPTION This DTC is stored when the parking assist ECU judges that the maximum steering angle has not been memorized (steering angle setting is incomplete). DTC No. Detection Item DTC Detection Condition Trouble Area C1694 Steering Angle Initialization Incomplete Maximum steerin ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Can Communication System: Check Bus 3 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 6 (CA3H) of the network gateway ECU and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the network gateway ECU and terminal 4 (CG) of the DLC3. Symptom Trouble A ...