DTC B1507-18: Turn Signal Light Circuit Current Below Threshold [04/2018 - 08/2019]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is stored when the combination meter assembly detects an open in a front turn signal light circuit or rear turn signal light circuit.

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.
If there is an open in a side turn signal light circuit, DTC B1507-18 will not be stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
B1507-18	Turn Signal Light Circuit Current Below Threshold	Diagnosis Condition: Auxiliary battery voltage is 10 V or more Malfunction Status: Open in front turn signal light circuit Open in rear turn signal light circuit	Harness or connector Headlight assembly Headlight ECU sub-assembly* Rear combination light assembly Rear light assembly* Rear combination light socket and wire Rear light cord* Combination meter assembly	DTC stored	-

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

B1507-18

Turn Signal Light Circuit Current Below Threshold

Diagnosis Condition:

Auxiliary battery voltage is 10 V or more

Malfunction Status:

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

Harness or connector
Headlight assembly
Headlight ECU sub-assembly*
Rear combination light assembly
Rear light assembly*
Rear combination light socket and wire
Rear light cord*
Combination meter assembly

DTC stored

*: w/ Cornering Light