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No Response: Air Bag Control Module (ACM)

CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
  1. Turn ignition switch to OFF position. Disconnect negative battery cable. Wait 2 minutes before proceeding. Disconnect Air Bag Control Module (ACM) connector. Connect negative battery cable. Turn ignition switch to ON position. Using a DVOM, measure voltage between ground and ACM connector terminal No. 21 (Violet/Brown wire). If reading is 1.8-2.8 volts, go to next step. If reading is not 1.8-2.8 volts, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST  .
  2. Measure voltage between ground and ACM connector terminal No. 22 (White/Black wire). If reading is 1.8-2.8 volts, go to next step. If reading is not 1.8-2.8 volts, repair open in White/Black wire. Perform BODY VERIFICATION TEST  .
  3. Ensure battery is fully charged. Measure resistance between ground and ACM connector terminal No. 4 (Black/Pink wire). Measure resistance between terminal No. 4 of ACM and ground. If both readings are less than 5 ohms, go to next step. If either reading is 5 ohms or more, repair open in Black/Pink wire or replace ACM. Perform AIR BAG VERIFICATION TEST  .
  4. Measure voltage between ground and ACM connector terminal No. 14 (Light Green/Yellow wire). Measure voltage between ground and ACM connector terminal No. 15 (Dark Blue/Yellow wire). If both readings are more than 10 volts, go to next step. If either reading is 10 volts or less, inspect fuse No. 18 (10-amp) and fuse No. 19 (10-amp) in Junction Block (JB). If both fuses are okay, repair open or high resistance in Light Green/Yellow wire and/or Dark Blue/Yellow wire. If fuses are blown, repair short to ground in Light Green/Yellow wire and/or Dark Blue/Yellow wire. Replace fuses.Perform AIR BAG VERIFICATION TEST  after repairs.
  5. Inspect connectors for good terminal contact and Repair connectors as necessary. If connectors are okay, turn ignition switch to OFF position. Wait 2 minutes before proceeding. Replace ACM. Perform AIR BAG VERIFICATION TEST  .
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