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(7) Clear the DTC stored in the SRSCM memory with the HiScan(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 HiScan(Pro).
Does the above DTC(s) go off?
►
Problem is intermittent or was repaired and SRSCM memory was not cleared.
►
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).
Restraint > Troubleshooting > B1397
DTC Description
The Seat Track Position Sensor (STPS) circuit consists of the SRSCM and two STPS. The SRSCM sets above
DTC(s) if it detects short or short to battery line on the STPS circuit. The "Seat Forward" status currently represents a
seat position in which the deployment of the second stage airbag is prohibited.
DTC Detecting Condition
DTC
Condition
Probable cause
B1397
B1399
• Short between STPS and SRSCM
• Short to battery line between STPS and SRSCM
• STPS Malfunction
• SRSCM Malfunction
• Short or short to battery
line circuit on wiring
harness
• STPS
• SRSCM
Specification
STPS Satus
Resistance(R) or Current (mA)
Related DTC(s)
Short to ground
R < 70Ω (low line, STPS Reward)
B1396, B1398
"SEAT FORWARD" status
4 < I < 7 mA
"SEAT REWARD" status
12 < I < 17 mA
Short to battery
R < 600Ω (low line, STPS Foward)
B1397, B1399
Schematic Diagram