MR2 Spyder L4-1.8L (1ZZ-FE) (2001)
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Horn Switch: Testing and Inspection
INSPECT HORN SWITCH
a. Check that no continuity exists between terminal 6 of the connector and body ground.
b. Check that continuity exists between terminal 6 of the connector and body ground when the horn contact plate is pressed against the steering spoke
assembly.
If continuity is not as specified, repair or replace the steering wheel or wire harness as necessary.