Check Horn Operation

STEP CHECK SHEET

Step	Check	Yes	No
1. CHECK HORN OPERATION. Make sure the horn sounds when the horn switch is pushed.	Does the horn sound?	Go to step 2.	Check the horn circuit.
2. CHECK HORN OPERATION. Disconnect the body integrated unit harness connector. Ground the harness connector terminal with a suitable wire. Connector & terminal (B280) No. 11 - Chassis ground:	Does the horn sound?	Check the body integrated unit. < Ref. to , BASIC DIAGNOSTIC PROCEDURE . >	Check the harness for open circuits and/or shorts between the body integrated unit and horn relay.

Step

Check

Yes

1. CHECK HORN OPERATION.

Make sure the horn sounds when the horn switch is pushed.

Does the horn sound?

Go to step 2.

Check the horn circuit.

2. CHECK HORN OPERATION.

Connector & terminal

(B280) No. 11 - Chassis ground:

Does the horn sound?

Check the body integrated unit. < Ref. to , BASIC DIAGNOSTIC PROCEDURE . >

Check the harness for open circuits and/or shorts between the body integrated unit and horn relay.