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Anti-Theft Controller Wiring Circuit

NOTE: For connector terminal identification, seeFig 1 .
  1. Using an ohmmeter, check for continuity between ground and anti-theft controller connector terminal No. 1 (door switch and tailgate switch). Continuity should exist with door or tailgate open and should not exist with door or tailgate closed. If circuit does not test as described, repair circuit as necessary.
  2. Check continuity between ground and anti-theft controller connector terminal No. 2 (tamper switch). Continuity should not exist. If circuit does not test as described, repair circuit as necessary.
  3. Check continuity between ground and anti-theft controller connector terminal No. 6 (hood switch). Continuity should exist with hood open and should not exist with hood closed. If circuit does not test as described, repair circuit as necessary.
  4. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 7 (ignition switch ACC position). Voltage should not be present with ignition switch in OFF position. Battery voltage should be present with ignition switch in ACC position. Voltage must be more than 10 volts. If circuit does not test as described, repair circuit as necessary.
  5. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 8 (battery positive). Battery voltage should be present. Voltage must be more than 10 volts. If circuit does not test as described, repair circuit as necessary.
  6. Using an ohmmeter, check continuity between ground and anti-theft controller connector terminal No. 9 (door lock switch and tailgate lock switch). Continuity should exist when unlocking door using door lock and should not exist when locking door using door lock. If circuit does not test as described, repair circuit as necessary.
  7. Check continuity between ground and anti-theft controller connector terminal No. 10 (detect switch for front doors and tailgate). Continuity should exist when unlocking door using ignition key and should not exist when locking door using ignition key. If circuit does not test as described, repair circuit as necessary.
  8. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 11 (indicator light). Battery voltage should be present. Using an ohmmeter, check continuity on same circuit. Continuity should exist. If circuit does not test as described, repair circuit as necessary.
  9. Using an ohmmeter, check continuity between ground and anti-theft controller connector terminal No. 13 (ground circuit). Continuity should exist. If circuit does not test as described, repair circuit as necessary.
  10. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 15 (horn circuit). Battery voltage should be present. Using an ohmmeter, check continuity on same circuit. Continuity should exist. If circuit does not test as described, repair circuit as necessary.
  11. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 16 (combination/dimmer switch). Battery voltage should be present. Using an ohmmeter, check continuity on same circuit. Continuity should exist. If circuit does not test as described, repair circuit as necessary.
  12. Using a DVOM, check voltage between ground and anti-theft controller connector terminal No. 17 (ignition switch). Battery voltage should be present. If circuit does not test as described, repair circuit as necessary.
NOTE: If all wiring circuits test as described in previous steps, replace anti-theft controller. As final check perform ANTI-THEFT SYSTEM CHECK PROCEDURE  .
Fig 1: Identifying Anti-Theft Controller Connector Terminals
G93H83300Courtesy of ISUZU MOTOR CO.
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