Kia Sedona (2008 year). Instruction — part 70

NO



Repair or replace the wiring harness between the BS and the SRSCM.

3. 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 3 of BS harness connector and chassis ground.

specification (voltage): Approximately 0 V

Fig. 76: Checking Short To Battery Line

4. Is the measured voltage within specification?

YES



Check the Seat belt buckle switch (BS).

NO



Repair the short to battery line circuit on wiring harness between the BS and the SRSCM.

4. CHECK THE SEAT BELT BUCKLE SWITCH (BS)

1. Measure current between the terminal 3 of BS and 32 (31) of SRSCM harness connector (B).

specification (current): 12-18 mA (Buckled status), 4-7 mA (Unbuckled status)

2. Is the measured current within specification?

YES



Go to next stop.

NO



Replace the BS.

2008 Kia Sedona EX

2008 RESTRAINTS Troubleshooting (Airbag) - Sedona

Microsoft

Monday, May 24, 2010 3:55:02 PM

Page 83

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5. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN

Refer to CLEAR THE DTC AND CHECK THE VEHICLE AGAIN.

DTC B1512 SEAT BELT BUCKLE SWITCH [DRIVER] SHORT OR SHORT TO GROUND; DTC
B1514 SEAT BELT BUCKLE SWITCH [PASSENGER] SHORT OR SHORT TO GROUND

DTC DESCRIPTION

The Seat Belt Buckle Switch (BS) circuit consists of the SRSCM and two BS. The SRSCM sets above DTC (s)
if it detects short or short to ground on the BS circuit. This system decides whether the driver or passenger seat
belt is buckled or not.

DTC DETECTING CONDITION

DTC DETECTING CONDITION

SCHEMATIC DIAGRAM

Fig. 77: Seat Belt Buckle Switch - Schematic Diagram

DTC

Condition

Probable cause

B1512
B1514



Short or Short to ground between BS and
SRSCM (Current | > 22.0 mA)



Seat Belt Buckle Switch (BS) Malfunction



SRSCM Malfunction



short or short to ground circuit
on wiring harness



Seat Belt Buckle Switch (BS)



SRSCM

2008 Kia Sedona EX

2008 RESTRAINTS Troubleshooting (Airbag) - Sedona

Microsoft

Monday, May 24, 2010 3:55:02 PM

Page 84

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SPECIFICATION

SEAT BELT BUCKLE SWITCH CURRENT SPECIFICATION

TERMINAL & CONNECTOR INSPECTION

Refer to TERMINAL & CONNECTOR INSPECTION.

INSPECTION PROCEDURE

1. PREPARATION

Refer to PREPARATION OF INSPECTION.

2. CHECK SHORT OR SHORT TO GROUND

1. Disconnect the BS connector.

2. Measure resistance between the terminal 3 of BS harness connector and chassis ground.

3. Measure resistance between the terminal 3 and 4 of BS harness connector.

specification (Resistance): Infinite

Fig. 78: Checking Short To Ground

4. Is the measured resistance within specification?

YES



5) Go to next step.

NO

BS Status

Current (mA)

Related DTC

Open or Short to Battery

< 2.98

B1511, B1513

Unbuckled

4-7

Defect

8.9-9.7

B1515, B1516

Buckled

12-18

Short or Short to Ground

> 22.0

B1512, B1514

2008 Kia Sedona EX

2008 RESTRAINTS Troubleshooting (Airbag) - Sedona

Microsoft

Monday, May 24, 2010 3:55:02 PM

Page 85

© 2006 Mitchell Repair Information Company, LLC.



Repair the short or short to ground circuit on wiring harness between the BS and the
SRSCM.

3. CHECK THE SEAT BELT BUCKLE SWITCH (BS)

1. Measure current between the terminal 3 of BS and 32 (31) of SRSCM harness connector (B).

specification (current): 12-18 mA (Buckled status), 4-7 mA (Unbuckled status)

2. Is the measured current within specification?

YES



Go to next stop.

NO



Replace the BS.

4. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN

Refer to CLEAR THE DTC AND CHECK THE VEHICLE AGAIN.

DTC B1515 SEAT BELT BUCKLE SWITCH [DRIVER DEFECT; DTC B1516 SEAT BELT BUCKLE
SWITCH [PASSENGER] DEFECT; DTC B1517 SEAT BELT BUCKLE SWITCH [DRIVER
INSTABILITY; DTC B1518 SEAT BELT BUCKLE SWITCH [PASSENGER] INSTABILITY

DTC DESCRIPTION

The Seat Belt Buckle Switch (BS) circuit consists of the SRSCM and two BS. The SRSCM sets above DTC (s)
if it detects the BS faults. This system decides whether the driver or passenger seat belt is buckled or not.

DTC DETECTING CONDITION

DTC DETECTING CONDITION

SCHEMATIC DIAGRAM

DTC

Condition

Probable cause

B1515
B1516
B1517
B1518



Seat Belt Buckle Switch (BS) Malfunction



SRSCM Malfunction



Seat Belt Buckle Switch (BS)



SRSCM

2008 Kia Sedona EX

2008 RESTRAINTS Troubleshooting (Airbag) - Sedona

Microsoft

Monday, May 24, 2010 3:55:02 PM

Page 86

© 2006 Mitchell Repair Information Company, LLC.