The Buckle Pretensioner circuit consists of the SRSCM and two Buckle Pretensioners (BUPT). The SRSCM sets above DTC(s) if it detects short to ground on the BUPT circuit.
DTC | Condition | Probable cause |
B1703 B1708 | ● Short to ground between BUPT and SRSCM ● Seat Buckle Pretensioner (BUPT) Malfunction ● SRSCM Malfunction | ● Short to ground circuit on wiring harness ● Seat Buckle Pretensioner (BUPT) squib ● SRSCM |
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
CHECK SHORT TO GROUND
Measure resistance between the terminal 1 of BUPT harness connector and chassis ground.
specification(resistance) : infinite
Is the measured resistance within specification?
▶ Check the BUPT Module.
▶ Repair or replace the wiring harness between the BUPT and the SRSCM.
CHECK THE BUPT MODULE
Replace the Buckle Pretensioner(BUPT) with a new one.
● Refer to "Buckle Pretensioner(BUPT)" section in this SERVICE MANUAL.
Install the DAB module and connect the DAB connector.
Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
Connect the SRSCM connector.
Connect the battery negative cable to the battery.
Connect a Hi-Scan(Pro) to the data link connector.
Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC related to Buckle Pretensioner(BUPT)?
▶ Go to next step.
▶ Replace BUPT module.
CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING part.
