Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Subaru >> 1999 >> Legacy Outback, 2.5, Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft & Keyless Entry Systems >> System Tests >> Basic Diagnostic Procedures (Anti-Theft/Security System)

Basic Diagnostic Procedures (Anti-Theft/Security System)

NOTE: Perform keyless entry basic diagnostic procedures before performing this test. See BASIC DIAGNOSTIC PROCEDURES (KEYLESS ENTRY SYSTEM)  .
  1. Open all windows. Remove ignition key from ignition switch. Set interior/room light switch to middle position. Close all doors, rear gate or trunk lid. Press LOCK/ARM button on remote transmitter once. If interior light blinks once, go to next step. If interior/room light does not blink, go to step  21 .
  2. Check if security indicator is blinking every 2 seconds. If security indicator light is blinking, go to next step. If security indicator light is not blinking or not blinking every 2 seconds, go to step  37 .
  3. Press UNLOCK/DISARM button on remote transmitter once. Check if turn signal light blinked 2 times. If turn signal light blinked 2 times, go to next step. If turn signal light did not blink 2 times, replace security control module.
  4. If interior/room light illuminates and stays on for 30 seconds, then turns off, go to next step. If interior/room light did not illuminate or stays on for more or less than 30 seconds, replace security control module.
  5. Unlock all doors using door lock switch on driver's door. Open driver's door. Check if security indicator is flashing every 1/8 second. If security indicator light is flashing, go to next step. If security indicator light is not flashing, go to step  40 .
  6. Check if turn signal light is still blinking. If turn signal light is still blinking, go to next step. If turn signal light is not blinking, replace security control module.
  7. Check if horn is still on. If horn is still on, go to next step. If horn is not on, replace security control module.
  8. Attempt to start engine. If starter activates, go to step  43 . If starter does not activate, go to next step.
  9. Close driver's door. If horn stops and turn signal light stops blinking, and starter activates after about 30 seconds, go to next step. If horn is still on and turn signal light is still blinking, and starter will not activate, replace security control module.
  10. Check if security indicator light is blinking every 2 seconds. If indicator light is blinking every 2 seconds, go to next step. If indicator light is not blinking every 2 seconds, replace security control module.
  11. Open right front door. Check if security indicator light is blinking every 1/8 second, horn is on, turn signal light is blinking and if starter is deactivated. If all these are as specified, go to next step. If any or all of these are not as specified, go to step  60 .
  12. Press UNLOCK/DISARM button on remote transmitter. If security indicator lights blinks, horn and turn signal light deactivate, and starter deactivates, go to next step. If security indicator light does not blink or horn and turn signal light stays on, or starter does not activate, replace security control module.
  13. Close right front door. Press LOCK/ARM button on remote transmitter. Open left rear door. If security indicator light blinks every 1/8 second, horn sounds, turn signal light blinks, and starter is deactivated, go to next step. If security indicator light does not blink every 1/8 second, horn does not sound, turn signal light does not blink, and starter is not deactivated, go to step  63 .
  14. Close left rear door. Open right rear door. If security indicator light blinks every 1/8 second, horn sounds, turn signal light blinks, and starter is deactivated, go to next step. If security indicator light does not blink every 1/8 second, horn does not sound, turn signal light does not blink, and starter is not deactivated, go to step  66 .
  15. Close right rear door. On Wagon, go to next step. On all other models, go to step  17 .
  16. Open rear gate. If security indicator light blinks every 1/8 second, horn sounds, turn signal light blinks, and starter is deactivated, go to step  18 . If security indicator light does not blink every 1/8 second, horn does not sound, turn signal light does not blink, or starter is not deactivated, go to step  69 .
  17. Open trunk lid. If security indicator light blinks every 1/8 second, horn sounds, turn signal light blinks, and starter is deactivated, go to next step. If security indicator light does not blink every 1/8 second, horn does not sound, turn signal light does not blink, or starter is not deactivated, go to step  71 .
  18. Close rear gate or trunk lid. Close all windows. Perform impact sensitivity test. Cover hood with a blanket. Arm system. Using a baseball, drop ball from a height of about 24" (610 mm) on center of hood, about 17" (432 mm) from windshield. If horn chirps, go to next step. If horn does not chirp, go to step  72 .
  19. Remove driver-side sill cover. Disconnect White 1-pin connector at lower front pillar. Close all doors, rear gate or trunk lid. If system automatically arms after one minute, go to next step. If system does not automatically arm after one minute, go to step  74 .
  20. Press UNLOCK/DISARM button on remote transmitter. Connect White 1-pin connector at lower front pillar. Install driver-side sill cover. Open hood. Press LOCK/ARM button on remote transmitter. Disconnect, then reconnect ground cable from battery. If system rearms automatically, system is operating normally. If system does not rearm automatically, replace security control module.
  21. Check fuse No. 23 (20-amp) in main fuse block. Replace as necessary and recheck system operation. If fuse is okay, go to next step.
  22. Check fuse No. 5 (10-amp). Replace as necessary and recheck system operation. If fuse is okay, go to next step.
  23. Check each turn signal light. Replace as necessary and recheck system operation. If turn signal lights are okay, go to next step.
  24. Check voltage between ground and main fuse block 8-pin connector terminal No. 6 (Brown wire). If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair circuit between fuse block and battery. See WIRING DIAGRAMS  .
  25. Disconnect security control module harness connector. Turn ignition on. Check voltage between ground and security control module harness connector terminal No. 11. See Figure . If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair circuit between security control module harness connector and main fuse block.
  26. Turn ignition off. Disconnect 12-pin harness connector from fuse block. Check resistance between security control module harness connector terminal No. 12 and fuse block harness connector terminal No. 8 (Red/Black wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between security control module and main fuse block.
  27. Check resistance between fuse block harness connector terminals No. 7 (Red wire) and No. 8 (Red/Black wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair or replace main fuse block.
  28. Check resistance between main fuse block 12-pin harness connector terminal No. 8 (Red/Black wire) and main fuse block 10-pin harness connector terminal No. 1 (Red wire). See WIRING DIAGRAMS  . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair or replace main fuse block.
  29. Disconnect right front turn signal light harness connector. Check resistance between turn signal light harness connector terminal No. 1 (Red wire) and main fuse block 10-pin harness connector terminal No. 1 (Red wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between right front turn signal light harness connector and main fuse block 10-pin harness connector.
  30. Disconnect left front turn signal light harness connector. Check resistance between turn signal light harness connector terminal No. 1 (Red wire) and main fuse block 10-pin harness connector terminal No. 1 (Red wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between left front turn signal light harness connector and main fuse block 10-pin harness connector.
  31. Check resistance between ground and right front turn signal light harness connector terminal No. 2 (Black wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between harness connector terminal No. 2 and ground.
  32. Check resistance between ground and left front turn signal light harness connector terminal No. 2 (Black wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between harness connector terminal No. 2 and ground. See WIRING DIAGRAMS  .
  33. Disconnect right rear turn signal light harness connector. Check resistance between turn signal light 4-pin harness connector terminal No. 3 (Red wire) on Sedan or 4-pin harness connector terminal No. 4 (Red wire) on Wagon and main fuse block 10-pin harness connector terminal No. 7 (Red wire). On all models, if resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between right rear turn signal light harness connector and main fuse block 10-pin harness connector.
  34. Disconnect left rear turn signal light harness connector. Check resistance between turn signal light 4-pin harness connector terminal No. 3 (Red wire) on Sedan or 4-pin harness connector terminal No. 4 (Red wire) on Wagon and main fuse block 10-pin harness connector terminal No. 7 (Red wire). On all models, if resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between left rear turn signal light harness connector and main fuse block 10-pin harness connector.
  35. Check resistance between ground and right rear turn signal light harness connector terminal No. 2 (Black wire). If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between harness connector terminal No. 2 and ground.
  36. Check resistance between ground and left rear turn signal light harness connector terminal No. 2 (Black wire). If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair circuit between harness connector terminal No. 2 and ground.
  37. Disconnect security control module harness connector. Using a jumper wire, jumper harness connector terminal No. 16 to ground. See Figure . If security indicator light comes on, replace security control module. If security indicator light does not come on, go to next step.
  38. Disconnect security indicator light harness connector. Check voltage between ground and security indicator light harness connector terminal No. 2. See Figure . If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair circuit between security indicator light and main fuse block.
  39. Check resistance between security indicator light harness connector terminal No. 4 and security control module harness connector terminal No. 16. See Figure and Figure . If resistance is less than 10 ohms, replace indicator LED bulb. If resistance is 10 ohms or greater, repair circuit between security indicator light and security control module.
  40. Disconnect harness connector from security control module and combination meter. Check resistance between combination meter harness connector terminal No. 8 and security control module harness connector terminal No. 5. See Fig 1 and Figure . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between combination meter and security control module harness connectors. See WIRING DIAGRAMS  .
    Fig 1: Identifying Combination Meter Harness Connector Terminals
    G99I50045Courtesy of SUBARU OF AMERICA, INC.
  41. Disconnect left front door switch harness connector. Check resistance between door switch harness connector terminal and combination meter harness connector terminal No. 4. See Fig 1 . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between door switch and combination meter harness connectors.
  42. Remove combination meter from instrument panel. Check resistance between combination meter terminals No. 4 and 8. If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair or replace combination meter.
    NOTE: On A/T models, place transmission in Park or Neutral position. On M/T models, depress clutch pedal.
  43. Disconnect electrical connector (Red/Yellow wire) from starter motor. Turn ignition switch to START position. Check voltage between ground and starter connector Red/Yellow wire terminal. If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, go to step  45 .
  44. Turn ignition off. Check resistance between starter ground cable and engine ground. If resistance is less than 5 ohms, repair or replace starter motor. If resistance is 5 ohms or greater, repair or replace starter ground cable.
  45. Check fusible link in main fuse block. Replace as necessary and retest system. If fusible link is okay, go to next step.
  46. Check fuse No. 4 (45-amp) in main fuse block. Replace as necessary and retest system. If fuse is okay, go to next step.
  47. Turn ignition off. Remove interrupt relay. See COMPONENT LOCATIONS  . Check for continuity between interrupt relay terminals No. 1 and 4. If continuity exists, go to next step. If continuity does not exist, replace relay.
  48. Check for continuity between interrupt relay terminals No. 2 and No. 6. If continuity exists, go to next step. If continuity does not exist, replace relay.
  49. Connect battery voltage to interrupt relay terminal No. 4 and connect ground to relay terminal No. 1. Check for continuity between relay terminals No. 2 and 6. If continuity exists, replace relay. If continuity does not exist, go to next step.
  50. Reinstall interrupt relay. Disconnect security control module harness connector. Turn ignition switch to START position. Check voltage between ground and security control module harness connector terminal No. 15. See Figure . If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair circuit between security control module and battery. See WIRING DIAGRAMS  .
  51. On A/T models, go to next step. On M/T models, go to step  55 .
  52. Turn ignition off. Disconnect inhibitor switch harness connector. Turn ignition switch to START position. Check voltage between ground and inhibitor switch harness connector terminal No. 1. See Fig 2 . If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair circuit between interrupt relay and inhibitor switch harness connector.
    Fig 2: Identifying Inhibitor Switch Harness Connector Terminals
    G99J50046Courtesy of SUBARU OF AMERICA, INC.
  53. Place selector lever in Park or Neutral. Check resistance between inhibitor switch harness connector terminals No. 1 (Black/Yellow wire) and No. 2 (Black/White wire). If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, replace inhibitor switch.
  54. Check resistance between inhibitor switch harness connector terminal No. 2 and Red/Yellow wire at starter motor. If resistance is less than 10 ohms, replace security control module. If resistance is not less than 10 ohms, repair circuit between inhibitor switch and starter motor connector.
  55. Turn ignition off. Remove starter interlock relay. Check for continuity between starter interlock relay terminals No. 1 and 2. See Figure . If continuity exists, go to next step. If continuity does not exist, replace starter interlock relay.
  56. Check for continuity between starter interlock relay terminals No. 3 and 4. If continuity exists, replace starter interlock relay. If continuity does not exist, go to next step.
  57. Connect battery voltage to starter interlock relay terminal No. 2. Connect relay terminal No. 1 to ground. Check resistance between relay terminals No. 3 and 4. If continuity exists, go to next step. If continuity does not exist, replace starter interlock relay.
  58. Reinstall starter interlock relay. Depress clutch pedal. Check resistance between clutch switch harness connector terminals No. 1 and 2. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, replace clutch switch.
  59. Disconnect electrical connector from starter (Red/Yellow wire). Turn ignition switch to START position. Depress clutch pedal. Check voltage between ground and starter electrical connector. If voltage is 10 volts or greater, replace security control module. If voltage is less than 10 volts, repair circuit between interrupt relay and starter motor. See WIRING DIAGRAMS  .
  60. Disconnect harness connector from security control module and combination meter. Check resistance between security control module harness connector terminal No. 5 and combination meter harness connector terminal No. 8. See Fig 1 and Figure . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between combination meter and security control module harness connectors.
  61. Disconnect right front door switch harness connector. Check resistance between right front door switch harness connector terminal and combination meter harness connector terminal No. 5. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between front door switch and combination meter harness connectors.
  62. Remove combination meter from instrument panel. Check resistance between combination meter terminals No. 5 and 8. See Fig 1 . If resistance is less than 10 ohms, replace security control module. If resistance is not less than 10 ohms, repair or replace combination meter.
  63. Disconnect harness connectors from security control module and combination meter. Check resistance between combination meter harness connector terminal No. 8 and security control module harness connector terminal No. 5. See Fig 1 and Figure . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between combination meter and security control module harness connectors.
  64. Disconnect left rear door switch harness connector. Check resistance between rear door switch harness connector terminal and combination meter harness connector terminal No. 9. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between left rear door switch and combination meter harness connectors.
  65. Remove combination meter from instrument panel. Check resistance between combination meter terminals No. 8 and 9. If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair or replace combination meter.
  66. Disconnect harness connectors from security control module and combination meter. Check resistance between security control module harness connector terminal No. 5 and combination meter harness connector terminal No. 8. See Fig 1 and Figure . If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between combination meter and security control module harness connectors. See WIRING DIAGRAMS  .
  67. Disconnect right rear door switch harness connector. Check resistance between right rear door switch harness connector terminal and combination meter harness connector terminal No. 12. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between right rear door switch and combination meter harness connectors.
  68. Remove combination meter from instrument panel. Check resistance between combination meter terminals No. 8 and 12. If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms nor greater, repair or replace combination meter.
  69. Disconnect harness connectors from rear gate latch switch and security control module. Check resistance between rear gate latch switch harness connector terminal No. 1 (Light Green/Yellow wire; Light Green/Red after splice) and security control module harness connector terminal No. 4. If resistance is less than 10 ohms, go to next step. If resistance is 10 ohms or greater, repair circuit between rear gate latch switch and security control module harness connectors.
  70. Check resistance between ground and rear gate latch switch harness connector terminal No. 2 (Black wire). If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair circuit between rear gate latch switch and ground.
  71. Disconnect harness connectors from trunk room light switch and security control module. Check resistance between trunk room light switch harness connector terminal No. 1 (Light Green/Yellow wire; Light Green/Red wire after splice) and security control module harness connector terminal No. 4 (Light Green/Black wire). If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair circuit between trunk room light switch and security control module harness connectors.
  72. Ensure security control module is properly installed on bracket. If module is properly installed, go to next step.
  73. Adjust sensitivity adjustment screw in security control module (clockwise for more sensitivity). Ensure plug is installed in adjusting hole after adjustment. Perform impact sensitivity test. If sensitivity adjustment is possible, system is normal. If sensitivity adjustment is not possible, replace security control module.
  74. Connect connectors at front pillar tower. Disconnect security control module harness connector. Check resistance between ground and security control module harness connector terminal No. 3. If resistance is less than 10 ohms, replace security control module. If resistance is 10 ohms or greater, repair circuit between security control module harness connector and ground. See WIRING DIAGRAMS  .
scientia non olet · About Mike's Workshop Manuals