Hazard Warning Switch Circuit: Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT HARNESS AND CONNECTOR (TURN SIGNAL FLASHER ASSEMBLY - BODY GROUND)

Disconnect the connector of the turn signal flasher assembly.

Fig 1: Identifying Turn Signal Flasher (Body Ground) Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

Tester Connection	Condition	Specified Condition
HAZ (D19-8) - Body ground	Hazard warning switch OFF	10 kΩ or higher
HAZ (D19-8) - Body ground	Hazard warning switch ON	Below 1 Ω

NG → See step 2

OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

INSPECT HAZARD WARNING SIGNAL SWITCH ASSEMBLY
1. Inspect hazard warning signal switch assembly. Refer to INSPECTION .
  OK
  
  Hazard warning switch is normal.
NG → REPLACE HAZARD WARNING SIGNAL SWITCH ASSEMBLY

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (HAZARD WARNING SWITCH CIRCUIT)