Toyota Avalon (XX50): Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT DEF RELAY

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 4	Auxiliary battery voltage applied between terminals 1 and 2	10 kΩ or higher
3 - 4	Auxiliary battery voltage not applied between terminals	Below 1 Ω
3 - 5	Auxiliary battery voltage applied between terminals 1 and 2	Below 1 Ω
3 - 5	Auxiliary battery voltage not applied between terminals	10 kΩ or higher
4 - 5	Always	10 kΩ or higher

If the result is not as specified, replace the DEF relay.

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Theft Deterrent / Keyless Entry: Theft Deterrent System(for Hv Model)
Check For Intermittent Problems CHECK FOR INTERMITTENT PROBLEMS NOTICE: If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost ...