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 connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Go to "Control Circuit open Inspection" procedure.
Ignition "OFF".
Disconnect the battery (+) & (-) terminal cable from the battery and wait at least one minutes.
Disconnect PAB SWITCH connector and SRSCM main harness connector.
Measure resistance between terminal "24" of the SRSCM main harness connector and terminal "1" of PAB SWITCH connector.
Specification : 0 Ω
Is the measured resistance within specifications?
YES
Go to "Control Circuit short to Battery Inspection"
NO
After replacing harness and go to "Verification and Vehicle Repair".
Ignition "OFF"
Disconnect PAB SWITCH connector and SRSCM main harness connector.
Connect the battery (+) & (-) terminal cable to the battery and Ignition "ON" & Engine "OFF".
Measure voltage between terminal "1" of the main harness connector and chassis ground.
Specification : approx. 0V
Is the measured voltage within specifications?
YES
Go to "Component Inspection".
NO
Substitute the SRS main harness and check for proper operation.
If the problem is corrected, replace SRS main harness and then go to "Verification of Vehicle Repair" procedure.