2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 371

OR BODY GROUND)

OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - POWER MANAGEMENT CONTROL ECU)

(a) Disconnect the F58 connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CERTIFICATION ECU - POWER MANAGEMENT

CONTROL ECU)

OK -- Continue to next step.

3. REPLACE POWER MANAGEMENT CONTROL ECU

(a) Replace the power management control ECU See: Power and Ground Distribution/Power Distribution Module/Service and

Repair/Removal.

NEXT -- Continue to next step.

4. CHECK DTC OUTPUT

(a) Clear the DTC See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Reading and

Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs.

OK:

DTC B278C is not output.

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See: Accessories and Optional

Equipment/Antitheft and Alarm Systems/Alarm Module/Service and Repair/Removal

OK -- END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)

Up to 08/2009

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: B279A: Theft Deterrent System Communication Line

High Fixation

B279A - Theft Deterrent System Communication Line High Fixation