LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1999 >> GS 400 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Systems >> Circuit Tests >> Anti-Theft Indicator Circuit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Anti-Theft Indicator Circuit

NOTE: If LEXUS scan tool is available, start test from step  1. If this scan tool is not available, start test from step  2.
  1. Connect a jumper wire between DLC1 connector terminals E1 and Tc. See Figure. Using scan tool, operate anti-theft indicator in ACTIVE TEST. If anti-theft indicator does not operate, go to next step. If anti-theft indicator operates, go to next test listed in appropriate SYMPTOM DIAGNOSIS table under TROUBLE SHOOTING .
  2. Check anti-theft indicator. See ANTI-THEFT INDICATOR  under COMPONENT TESTS. Replace anti-theft indicator as necessary. Retest system operation. If anti-theft indicator is okay, go to next step.
  3. Check circuits for faults between anti-theft indicator, body control ECU No. 1 and ground. See WIRING DIAGRAMS . Repair or replace as necessary. If circuits are okay, go to next test listed in appropriate SYMPTOM DIAGNOSIS table under TROUBLE SHOOTING .
scientia non olet · About LEMON Manuals