Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZL6W
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: HORN: RELAY: ON-VEHICLE INSPECTION; 2017 - 2020 MY Sienna [08/2016 -        ]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT HORN RELAY ASSEMBLY

(a) Check the resistance.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

3 - 5

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the horn relay assembly.