W/Harness Inspection

Airbag

Weight Classification - B1449 Passenger Side Weight Classification System Communication Error - W/Harness Inspection

Terminal and Connector Inspection

1. 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.
2. Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Power Circuit Inspection

1. Check for an open or short circuit in the WCS Power Circuit.
(1) Disconnect WCS connector from wiring harness.
(2) Ignition "ON" & Engine "OFF".
(1) Measure voltage between terminal "supply voltage" and chassis ground.

Specification :Battery Voltage




(3) Is the measured voltage within specifications?






Communication K LINE Inspection

1. Ignition "ON" & Engine "OFF" and Using a scan tool, clear the DTC.
2. Ignition "OFF".
3. Disconnect the battery negative cable, then disconnect the positive cable, and wait at least one minutes.
4. Disconnect the WCS MODULE from the WCS wiring harness.
5. Disconnect the SRSCM from the WCS wiring harness.
6. Measure resistance between of the WCS Communication K LINE wiring connector and BCM harness

Specification :approx. 1 Ohms below




7. Is the measured resistance within specifications?






WCS Reset

1. Ignition "OFF", connect scantool.
2. Ignition "ON" & Engine "OFF", select Weight Classification System and select "WCS Reset" mode.
3. You will see comments and current weight measured.
4. Make sure the measure weight is caused by occupant or tools or interference.
5. And then press "ENTER"

















Specification : Approx. - 4.0 kg ~ + 4.0 kg

6. The 'WCS Reset' operation will take 3 - 10 second.
7. Make sure that there should not be vibration or weight adding to the passenger front seat.








8. If the 'WCS Reset' operation is finished successfully, you will see the following screen.








Fig.1) Select System
Fig.2) Weight Classification System Select
Fig.3) Weight Classification System Reset
Fig.4) EMPTY Data
Fig.5) Weight Classification System Reset
Fig.6) Weight Classification System Reset
Fig.7) Normal Data
Fig.8) Current Data
9. Is the displayed parameter the same as the above 7 figure?