B2781

STEERING COLUMN: STEERING LOCK SYSTEM: B2781: Open / Short in Steering Lock ECU

DTC B2781 - Open / Short in Steering Lock ECU

DESCRIPTION

If the steering lock ECU determines that there is a malfunction inside the ECU, it outputs this DTC. The steering lock ECU diagnosis information cannot be read directly from the steering lock ECU by the tester. The diagnosis information from the steering lock ECU is transmitted to the tester via the certification ECU (smart key ECU assembly) using the Controller Area Network (CAN).






INSPECTION PROCEDURE
HINT: When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following step to wake up the ECU:
Before starting the inspection, with the engine switch off, open the driver's door. Then (with the engine switch still off) open and close any door several times in 1.5-second intervals.
NOTE: If the steering lock actuator assembly (steering lock ECU) is replaced, with the engine switch off and the shift lever in the N position, open and close the driver's to record the current lock position into the steering lock ECU. If this is not performed, the engine may not start.

PROCEDURE

1. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
HINT: The steering lock ECU and steering lock actuator assembly are supplied as a unit.
(a) Replace the steering lock actuator assembly Removal.
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