B1494
DTC B1489 PASSENGER OCCUPANT CLASSIFICATION (OC) ECU DEFECTDTC B1490 PASSENGER OCCUPANT CLASSIFICATION (OC) SENSOR (BLADDER) DEFECT
DTC B1493 PASSENGER OCCUPANT CLASSIFICATION (OC) SYSTEM COMMUNICATION ERROR
DTC B1494 PASSENGER OCCUPANT CLASSIFICATION (OC) SYSTEM WRONG ID
DTC DESCRIPTION
The passenger occupant classification system consists of the SRSCM and the OC module. The above DTC is recorded when a defect or communication error of the OC module is detected in the OC module circuit.
DTC Detecting Condition:
Schematic Diagram:
TERMINAL & CONNECTOR INSPECTION
1. Visually inspect all connectors related to the affected circuit for damage and secure connection.
2. Inspect terminals for damage and corrosion.
CAUTION: Avoid damaging connectors during the inspection process.
3. Are any problems found?
YES - Go to next step (INSPECTION PROCEDURE).
NO - After repairing the trouble part, check whether DTC occurs or not.
INSPECTION PROCEDURE
1. PREPARATION
1. Turn the ignition switch to LOCK.
2. Disconnect the battery negative cable from the battery and wait for at least 3 minutes.
3. Remove the DAB module and disconnect the DAB connector.
4. Disconnect the connectors of the PAB, SAB; CAB, BPT, FIS and SIS.
5. Disconnect the SRSCM connector.
2. CHECK OPEN CIRCUIT
1. Measure resistance between the terminal 4 of OC module harness connector and the terminal 36 of SRSCM harness connector (B).
2. Measure resistance between the terminal 5 of OC module harness connector and the terminal 37 of SRSCM harness connector (B).
Specification (resistance) : below 1 ohm
3. Is the measured resistance within specification?
YES - Check short to ground.
NO - Repair the open circuit on wiring harness between the OC module and the SRSCM.
3. CHECK SHORT TO GROUND
1. Measure resistance between the terminal 4 of OC module harness connector and chassis ground.
Specification (resistance) : infinite
2. Is the measured resistance within specification?
YES - Check short circuit.
NO - Repair or replace the wiring harness between the OC module and the SRSCM.
4. CHECK SHORT CIRCUIT
1. Measure resistance between the terminal 4 and 5 OC module harness connector.
Specification (resistance) : infinite
2. Is the measured resistance within specification?
YES - Go to next stop.
NO - Repair or replace the wiring harness between the OC module and the SRSCM.
5. CHECK SHORT TO BATTERY LINE
1. Connect the battery negative cable to the battery.
2. Turn the ignition switch to ON.
3. Measure voltage between the terminal 4 of OC module harness connector and chassis ground.
Specification (voltage) : Approximately 0 V
4. Is the measured voltage within specification?
YES - Check the OC module.
NO - Repair the short to battery line on the wiring harness between the OC module and the SRSCM.
6. CHECK THE OC MODULE
1. Replace the OC module with a new one.
- Refer to OCS.
2. Turn the ignition switch to LOCK.
3. Connect the OC module connector.
4. Connect the SRSCM connector.
5. Connect the battery negative cable to the battery.
6. Connect Hi-Scan (Pro) to the data link connector.
7. 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 "OC (PODS) Reset" procedure.
NO - Replace OC module.
7. OC (PODS) Reset procedure.
The following procedures are to be followed to erase the PODS ECU diagnostic codes and for PODS ECU initialization.
1. Turn on Hi-Scan Pro and select the Azera model.
2. Select SRS-AIRBAG.
3. Select DIAGNOSTIC TROUBLE CODES. All airbag related diagnostic codes will be displayed if stored.
4. If there are diagnostic codes related to the PODS ECU stored in the main SRS control module, the PODS ECU must be reset first before any SRS diagnostic code(s) can be erased.
NOTE: Do not clear any codes at this time. Proceed to the next step.
5. Press Escape (ESC) and select PODS RESET.
6. The Hi-Scan will show the two PODS RESET function steps.
1. Erase PODS ECU diagnostic codes
2. PODS ECU initialization
7. Press the ENTER key to erase the PODS related diagnostic codes.
NOTE: Confirm the PODS diagnostic codes are erased.
8. Press ENTER to initialize the PODS.
NOTE: Make sure the front passenger seat is empty before performing the PODS ECU initialization.
9. The PODS initialization procedure will be performed.
10. Once the RESET procedure has been completed, press ESC to exit the PODS RESET menu.
11. If required, select DIAGNOSTIC TROUBLE CODES to erase any stored diagnostic codes in the SRS main module.
8. CLEAR Make sure the front THE DTC AND CHECK THE VEHICLE AGAIN
1. Install the DAB module and connect the DAB connector.
2. Connect the connector of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
3. Connect the SRSCM connector.
4. Connect the battery negative cable to the battery.
5. Connect a Hi-Scan (Pro) to the data link connector.
6. Turn the ignition switch to ON.
7. Clear the DTC stored in the SRSCM memory with the Hi-Scan (Pro)
8. Turn the ignition switch to LOCK and wait for at least 30 seconds.
9. Turn the ignition switch to ON and wait for at least 30 seconds.
10. Check the vehicle again with the Hi-Scan (Pro).
Does the above DTC(s) go off?
YES - Problem is intermittent or was repaired and SRSCM memory was not cleared.
NO - Replace the SRSCM with a new one and then check the vehicle again. At this time, if the vehicle normally operates with a new one, the fault may be the SRSCM. Replace the SRSCM.
NOTE: Be sure to perform OCS (PODS) reset with Hi-Scan (Pro) after clearing the OCS related DTC.