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Home >> Isuzu >> 1997 >> Trooper LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Miscellaneous Pcm Controls >> Brake Light Switch

Brake Light Switch

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  1. Disconnect brake light switch harness connector. Using an ohmmeter, check continuity between brake light switch terminals No. 1 and 2. See WIRING DIAGRAMS for terminal identification. Continuity should not be present. Depress brake pedal or activate brake light switch, continuity should be present. Replace switch if not as specified.
  2. Check for battery voltage at brake light switch connector. If battery voltage is not present, check 20A Stop-Hazard fuse in fuse box. If fuse is okay, check battery feed wire for an open or short. Repair as necessary.
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