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Test 3A: ACM, Loss Of Ignition Run-Start (Active Code)

NOTE: Prior to performing any air bag system test, go to PRETEST INSPECTION & DIAGNOSTIC PROCEDURE  under DIAGNOSTICS. Perform TEST VER-1: AIR BAG VERIFICATION TEST  after all repairs unless otherwise directed.
  1. Turn ignition switch to OFF position. Remove and inspect fuse No. 9. located in fuse block. See Figure . If fuse is blown, go to next step. If fuse is not blown, go to step  4 .
  2. Measure resistance between ground and ACM side of fuse cavity No. 9 (Dark Green- White wire). See WIRING DIAGRAMS  . If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, replace fuse No. 9.
  3. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. While monitoring resistance of ACM side of fuse cavity No. 9 (Dark Green- White wire), access and disconnect ACM connector, left SIACM connector and right SIACM connector one by one. See AIR BAG CONTROL MODULE (ACM)  and SIDE IMPACT AIR BAG CONTROL MODULE (SIACM)  under REMOVAL & INSTALLATION. If resistance changes to more than 5 ohms after disconnecting any control module, replace that control module. If resistance is remains less than 5 ohms, go to next step.
  4. Remove fuse No. 9 located in fuse block. Turn ignition switch to ON position. Measure voltage between ground and ignition switch output side of fuse cavity No. 9 (Dark Blue wire). If voltage is less than 4 volts, repair open or low voltage condition in Dark Blue wire. If voltage is more than 4 volts, install fuse No. 9 and go to next step.
  5. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Access and disconnect ACM connector. See AIR BAG CONTROL MODULE (ACM)  under REMOVAL & INSTALLATION. Turn ignition switch to ON position. Connect negative battery cable. Measure voltage between ground and ACM connector terminal No. 14 (Dark Green-White wire). See Figure . If voltage is more than 4 volts and no other malfunctions are detected, replace ACM. If voltage is less than 4 volts, repair open in Dark Green-White wire.
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