B1333
DTC B1328 DFIS DEFECTDTC B1329 DFIS COMMUNICATION ERROR
DTC B1333 PFIS DEFECT
DTC B1334 PFIS COMMUNICATION ERROR
DTC DESCRIPTION
The detecting system for front crash consists of the SRSCM and two Front PFIS Sensors (FIS). The SRSCM sets above DTC(s) if it detects that any FIS is defective or there is communication error between any FIS and the SRSCM.
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?
NO - Go to next step.
YES - 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 negative (-) terminal 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, BUPT, FIS and SIS.
5. Disconnect the SRSCM connector.
2. CHECK FIS CIRCUIT
1. Disconnect the battery, wait 3 minutes.
2. Disconnect the FIS and SRSCM
3. Measure the resistance between terminal 1 of the FIS harness connector and terminal A 23(21) of SRSCM harness connector.
4. Measure the resistance between terminal 2 of the FIS harness connector and terminal A 22(20) of SRSCM harness connector.
Specification (resistance) : below 1 ohm
Is the measured resistance within specification?
YES - Check Front Impact Sensor.
NO - Repair or replace the wiring harness between the FIS and the SRSCM.
3. CHECK FRONT IMPACT SENSOR
1. Replace the front impact sensor (FIS) with a new one.
2. Install the DAB module and connect the DAB connector.
3. Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
4. Connect the SRSCM connector.
5. Connect the negative (-) terminal to the battery.
6. Connect a 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 FIS?
YES - Go to next step.
NO - Replace the Front Impact Sensor (FIS).
4. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
1. Install the DAB module and connect the DAB connector.
2. Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
3. Connect the SRSCM connector.
4. Connect the negative (-) terminal 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 SRSCM, the fault may be the SRSCM (Replace SRSCM).