DTC B2402 Transistor Relay Overload Malfunction: Description

The electric current flowing in the transistor inside the rear junction block is examined by the rear junction block ECU.

When excessive current is detected, DTC B2402 is output.

Turning off the engine switch clears the DTC.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
B2402	Transistor relay overload malfunction	Rear combination light assembly LH Rear combination light assembly RH Rear light assembly LH Rear light assembly RH Center stop light assembly License plate light assembly Rear junction block ECU Wire harness