Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
![]() | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to "Squib Circuit Inspection" procedure. |
Ignition "OFF".
Disconnect (-) terminal cable from battery and wait for 1 minutes or more.
Disconnect DCAB module and connect the dummy and dummy adapter to main harness connector.
If dummy and dummy adaptor are not able to be prepared, use a known-good DCAB or 2Ω resistor.
Connect (-) terminal cable to battery and Ignition "ON" & Engine "OFF" and wait for 30 seconds or more.
Connect scantool to Data Link Connector(DLC) and clear DTC with scantool and diagnose again.
Is DTC present problem ?
![]() | ▶ Go to "Main harness circuit inspection" procedure. |
![]() | ▶ Substitute a known-good DCAB assembly, and check for proper operation. If the problem is corrected, replace DCAB and then go to "Verification of Vehicle Repair" procedure. |
Ignition "OFF".
Disconnect the battery (-) terminal cable from the battery and wait at least one minutes.
Disconnect DCAB connector and SRSCM main harness connector.
Connect the battery (-) terminal cable to the battery and Ignition "ON" & Engine "OFF".
Measure voltage between terminal "Low" or "High" of the DCAB harness connector and chassis ground.
Specification : approx. 0V
Is the measured voltage within specifications?
![]() | ▶ Substitute a known-good SRSCM, and check for proper operation. If the problem is corrected, replace SRSCM and then go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Substitute the SRSCM main harness and check for proper operation. If the problem is corrected, replace SRSCM main harness and then go to "Verification of Vehicle Repair" procedure. |