Test No. 13: Anti-Theft System Warning Operation Exceeds 60 Seconds
- Check body Electronic Control Unit (ECU) for proper voltage and input signals. See BODY ELECTRONIC CONTROL UNIT under PIN VOLTAGE TESTS. If proper voltage and input signals exist, go to next step. If proper voltage and input signals do not exist, repair as necessary and recheck anti-theft system operation.
- Replace body ECU with a known-good body ECU and recheck anti-theft system operation. If anti-theft system operates properly, original body ECU was defective. If anti-theft system still does not operate properly, check wiring harness and electrical connectors for body ECU for intermittent problem. See WIRING DIAGRAMS in POWER DOOR LOCKS & REMOTE KEYLESS ENTRY SYSTEMS - SEQUOIA article. Repair wiring harness or electrical connector as necessary.