Component Circuits Diagnosis

SIR/CRUISE/TURN COIL ASSEMBLY
Check resistance through coil assembly by measuring voltage at horn switch and rotating steering wheel.

Check for OPENS/SHORTS.

Repair as needed.

HORN SWITCHES (CONTACT PLATES)
Check resistance through horn switches. The switch resistance should be less than 1 ohm when the horn pad is depressed and open when the horn pad is not depressed.

Check for OPENS/SHORTS.

Repair/replace as needed.

HORN
Replace as needed.