2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 266

Open in Front Passenger Side Electrical Antenna Circuit

B27A2 - Open in Front Passenger Side Electrical Antenna Circuit

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and sends it to the door electrical key oscillator built into the front door

outside handle assembly (for front passenger side) at 0.25-second intervals. To detect a key near the front passenger door, the front door outside

handle assembly (for front passenger side) creates a detection area with a radius of approximately 1.0 m (3.28 ft.) from the front passenger door at

0.25-second intervals.

DTC B27A2 is detected by the certification ECU (smart key ECU assembly) if an open circuit is detected between the certification ECU (smart key

ECU assembly) and front door outside handle assembly (for front passenger side) terminals (between CLG2 and ANT1, or CG2B and ANT2).

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

The smart access system with push-button start (for entry function) uses a multiplex communication system (LIN communication

system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting

See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Initial Inspection and Diagnostic

Overview/Smart Access System With Push-Button Start (for Entry Function)/How To Proceed With Troubleshooting.

Troubleshoot the smart access system with push-button start (for entry function) after confirming that the communication system

is functioning properly.

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION

(a) Turn the engine switch off.

(b) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and the front door outside handle

assembly (for front passenger side).

OK:

Connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY

OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE)

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the front door outside handle assembly (for front passenger side) connector.