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CIRCUIT INSPECTION
B. Check the SRS SRI (Service Reminder Indicator). OK : SRS SRI ON DTC B1620 Airbag unit internal failure CIRCUIT DESCRIPTION 1. Functional readiness of the firing circuit activation transistors. 2. Adequacy of deployment energy reserves. 3. Safing sensor integrity : detection of faulty closure. 4. Plausibility of accelerometer signal. 5. Operation of SRSCM components. DIAGNOSIS WITH SCAN TOOL CHECK PROCEDURES 1. Connect the Hi-Scan Pro DLC to the vehicle's data link connector located under neath the dash panel. 2. Turn the ignition key to the "ON" position and turn the Hi-Scan Pro ON. 3. Perform the SRS diagnosis according to the vehicle model configuration. 4. If a fault code is assured, then replace the component. Never attempt to repair the component. 5. If the Hi-Scan Pro finds that a component of the system is faulty, there is a possibility that the fault is not in the component, but in SRS wiring or connector.
DIAGNOSTIC TROUBLESHOOTING FLOW |