3.
Are confirmed trouble on the connector and the terminal?
▶ After repairing the trouble part, check whether DTC occurs or not.
▶ Check the buckle pretensioner resistance.
This system decides whether the seat belt of the driver is locked and then prevent the belt pretensioner from deploying on crash.
The above DTC is recorded when a resistance too high is detected in the buckle switch circuit.
Condition | Probable cause |
- Too hign resistance between buckle switch high(+) and low(-) wiring harness of squib. - Buckle pretensioner malfunction - SRSCM malfunction | - Buckle pretensioner - SRSCM - Wire harness |
Check all the connectors related to the DTC for contact condition visually.
Check the connector and the terminal.
Check the connector for connection securely.
Check the terminal for contact condition,deterioration,erosion and elasticity.
Do not deform the connector for revising contact.
Are confirmed trouble on the connector and the terminal?
▶ After repairing the trouble part, check whether DTC occurs or not.
▶ Check the buckle pretensioner resistance.
Preparation
Disconnect the negative(-) terminal cable from the battery,and wait 30 seconds.
Remove the DAB module.
Disconnect the connector of the PAB,SAB,CAB,SIS,FIS and BPT.
Disconnect the SRSCM connector.
Check buckle pretensioner resistance.
Check the buckle pretensioner resistance.
Belted : R = 1kΩ ± 10%
Unbelted : R = 400Ω ± 10%
▶ From the result of the above inspection, the malfunctioning part can now be considered normal.
▶ Replace the buckle pretensioner.
Belted : R = 1Ω ± 10%
Unbelted : R = 400Ω ± 10%
