B1397

DTC B1397 DRIVER SIDE SEAT TRACK POSITION SENSOR SHORT OR SHORT TO BATTERY

DTC B1399 PASSENGER SIDE SEAT TRACK POSITION SENSOR SHORT OR SHORT TO BATTERY

DESCRIPTION
The advanced restraint control module shall monitor the status of the driver and passenger STPS (Seat Track Position Sensor). The advanced restraint control module shall provide one pin for the driver. STPS input and one pin for the passenger STPS.

Detecting Condition:

INSPECTION OF CONNECTOR AND TERMINAL
1. Check all the connectors related to the DTC for contact condition visually.
2. Check the connector and the terminal.
1. Check the connector for connection securely.
2. Check the terminal for contact condition, deterioration, erosion and elasticity.

CAUTION: Do not deform the connector for revising contact.

3. Are confirmed trouble on the connector and the terminal?

YES - After repairing the trouble part, check whether DTC occurs or not.

NO - Check the STPS circuit.

CHECK STPS CIRCUIT
1. Preparation
1. Disconnect the negative (-) terminal cable from the battery and wait 30 seconds.
2. Remove the DAB module.
3. Disconnect the connector of the PAB, SAB, CAB, SIS, FIS and BPT.




4. Disconnect the SRSCM connector.




2. Check STPS circuit
Measure the current of sensor high seat track position sensor high and body ground between the SRSCM connector and the seat track position sensor.

Current: Rearward: 12mA ≤ | ≤ 17mA
Forward : 4mA ≤ | ≤ 7mA

YES - Go to step 3.

NO - Replace the harness between the SRSCM and STPS.




3. Check STPS.
Check the resistance

Switch closed: R=300 ohms ± 1% (forward status)
Switch open: R=900 ohms ± 1% (Rearward status)

YES - Check the STPS.

NO - Replace the harness between the SRSCM and STPS.

CHECK STPS
1. Preparation
1. Turn the ignition switch "LOCK".
2. Connect the STPS connector.
3. Connect the SRSCM connector.
4. Connect the negative (-) terminal cable from the battery, and wait for 30 seconds.

2. Check
1. Turn the ignition switch to "ON ", and wait for at least 30 seconds.
2. Clear the malfunction code stored in the memory with the HI-Scan Pro.
3. Turn the ignition switch to "LOCK ", and wait for at 30 seconds.
4. Turn the ignition switch to "ON ", and wait for at 30 seconds.




5. Using Hi-Scan Pro, check the DTC.

NOTE: Codes other than these may be output at this time, but they are not relevant to this procedure.

6. There is no DTC.

YES - From the result of the above inspection, the malfunctioning part can now be considered normal.

NO - Replace the STPS.