DTC B1507-18: Turn Signal Light Circuit Current Below Threshold [12/2017 - 10/2020]: Description

When the operation signal of the turn signal switch (headlight dimmer switch assembly) is input, the combination meter assembly operates the turn signal lights on the RH and LH sides in response to switch operation. If there is an open in the front or rear turn signal light circuit, the combination meter assembly outputs B1507-18.

HINT:

If there is an open in a front turn signal light circuit or rear turn signal light circuit, the turn signal lights on the side with the open circuit will blink faster than usual.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
B1507-18	Turn Signal Light Circuit Current Below Threshold	Diagnosis Condition: Battery voltage is 10 V or more Malfunction Status: Open in front turn signal light circuit Open in rear turn signal light circuit	Headlight unit assembly Headlight ECU sub-assembly Side turn signal light assembly Outer mirror actuator assembly Front multiplex network door ECU Rear combination light assembly Rear light assembly Combination meter assembly Harness or connector	DTC stored	-

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

B1507-18

Turn Signal Light Circuit Current Below Threshold

Diagnosis Condition:

Battery voltage is 10 V or more

Malfunction Status:

Open in front turn signal light circuit
Open in rear turn signal light circuit

Headlight unit assembly
Headlight ECU sub-assembly
Side turn signal light assembly
Outer mirror actuator assembly
Front multiplex network door ECU
Rear combination light assembly
Rear light assembly
Combination meter assembly
Harness or connector

DTC stored