Inspection Procedure
- PREPARATION
Refer to DESCRIPTION under TROUBLESHOOTING.
- CHECK POWER TO OC MODULE
- Connect the battery negative cable to the battery.
- Turn the ignition switch to ON.
- Measure voltage between the terminal 1 of OC Module harness connector and chassis ground.
specification (voltage) : Battery voltage
- Is the measured voltage within specification?
YES
- Check short to battery line.
NO
- Repair or replace the wiring harness between the OC Module and ignition switch.
- CHECK SHORT TO BATTERY LINE
- Measure voltage between the terminal 1 of OC Module harness connector and chassis ground.
specification (voltage) : Approximately 0 V
- Is the measured voltage within specification?
YES
- Check short to ground.
NO
- Repair the short to battery line circuit on wiring harness between the OC Module and the SRSCM.
- Measure voltage between the terminal 1 of OC Module harness connector and chassis ground.
- CHECK SHORT TO GROUND
- Turn the ignition switch to LOCK.
- Disconnect the battery negative cable from the battery.
- Measure resistance between the terminal 1 of OC Module harness connector and chassis ground.
- Measure resistance between the terminal 1 and 6 of OC Module harness connector
Specification (resistance) : Infinite
- Is the measured resistance within specification?
YES
- Check OC Module Circuit.
NO
- Repair or replace the wiring harness between the OC Module and the SRSCM.
- CHECK OC SENSOR CIRCUIT
- Measure resistance between the terminal 1 of OC Module harness connector and the terminal 23 of the SRSCM harness connector (B).
specification (resistance) : below 1 Ω
- Is the measured resistance within specification?
YES
- Check OC Module.
NO
- Repair or replace the wiring harness between the OC Module and the SRSCM.
- Measure resistance between the terminal 1 of OC Module harness connector and the terminal 23 of the SRSCM harness connector (B).
- CHECK OC MODULE
- Replace the OC Module with a new one.
- Refer to "OCCUPANT CLASSIFICATION SENSOR (OCS) ".
- Install the DAB module and connect the DAB connector.
- Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
- Connect the SRSCM connector.
- Connect the battery negative cable to the battery.
- Connect the a Hi-Scan (Pro) the data link connector.
- Turn the ignition switch to ON and check the vehicle again.
- Does Hi-Scan (Pro) indicate any DTC related to OC Module?
YES
- Go to next step.
NO
- Replace the OC Module.
- Replace the OC Module with a new one.
- CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to DESCRIPTION under TROUBLESHOOTING.
NOTE: Be sure to perform WCS reset with Hi-Scan (Pro) after clearing the OCS related DTC.