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 ?
YES
1) Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Power Circuit Inspection" procedure

Power Circuit Inspection

1. Check for an open or short circuit in the OC sensor
(1) Ignition "OFF"
(2) Disconnect OC sensor connector from wiring harness.
(3) Disconnect the wiring harness connector from SRSCM.
(4) Ignition "OFF"
1) Measure resistance between terminal 70 (SRSCM) to terminal 2 (OCS)connector.
2) Measure resistance between terminal 3 to ground
(5) Ignition "ON"
3) Measure voltage between terminal 1 to ground. (with Ignition "ON")
A. Specification :
1) Resistor of wiring 0 - 1.5 ohms
2)Resistor of ground 0 - 1.5 ohms
3)Voltage:12V ±2V (System voltage)




(6) Is the measured resistance or voltage within specifications ?
YES
1) Go to "Power Circuit Inspection 2" procedure
2) Poor contact at the OC sensor connector; check the connector.
3) If the connector is OK, substitute a known-good OC sensor, and check for proper operation.
If the problem is corrected, replace OC sensor
NO
1) Open or increased resistance in the OC sensor system, substitute a known-good wiring harness or OC sensor for proper operation.
2) If the problem is corrected, replace wiring harness or OC sensor and then go to "Verification of Vehicle Repair" procedure.

Power Circuit Inspection 2

1. Check the OC Sensor operation.
(1) Ignition "OFF"
(2) Connect the Scan Tool connector to the DTC connector for the diagnosis.
(3) Select the system (Airbag) and choose the "CRASH INFORMATION" mode.
(4) Select the "PASS OCS (or POD) STATUS" item and then check the status of OCS.
-When occupied or some heavy object on the passenger seat -> "OCCUPIED"
-When the object is removed, or the passenger sits upright -> "EMPTY"




(5) Is the measured resistance or voltage within specifications ?
YES
1) Intermittent failure, system is OK at this moment. Check for connector and conform the SRSCM
2) If the connector is OK, substitute a known-good OCS, and check for proper operation.
If the problem is corrected, replace OCS and then go to "Verification
NO
1) OCS (Occupied Classification Sensor) are defected , replace the OCS and check for proper operation.
2) If the problem is corrected, go to "Verification of Vehicle Repair" procedure.