Kia Sedona (2008 year). Instruction — part 173

Fig. 130: Measuring Waveform Between Terminal 29 Of IMS And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

Fig. 131: Identifying Waveform
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured voltage within specifications in Fig. 131?

YES

Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,
or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE
REPAIR" procedure.

NO

Substitute with a known-good power seat slide sensor and check for proper operation. If the
problem is corrected, replace power seat slide sensor and then go to "VERIFICATION OF
VEHICLE REPAIR" procedure.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC B1954.

2008 Kia Sedona EX

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

Microsoft

Monday, May 24, 2010 4:19:18 PM

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DTC B1956 FRONT HEIGHT MOTOR OR SENSOR ERROR

COMPONENT LOCATION

Refer to DTC B1954.

GENERAL DESCRIPTION

Refer to DTC B1954.

DTC DESCRIPTION

The ECM sets DTC B1956 if there's any fault in front height sensor signal.

DTC DETECTING CONDITION

DTC DETECTING CONDITION

MONITOR DTC STATUS

1. Connect scan tool to Data Link Connector (DLC).

2. Ignition "ON" & engine "OFF".

3. Select "Diagnostic Trouble Codes (DTCs)"mode and monitor "DTC Status" parameter.

4. Is the DTC B1956 present?

YES

Go to TERMINAL AND CONNECTOR INSPECTION procedure.

NO

Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and
ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending,
corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to
"VERIFICATION OF VEHICLE REPAIR" procedure.

TERMINAL AND CONNECTOR INSPECTION

Item

Detecting Condition

Possible Cause

DTC Strategy



Check no. of pulse



Open or short in signal
harness



Open or short in power
harness



Faulty front height motor



Faulty front height sensor

Enable Conditions



IGN `ON' & Engine `OFF'
& front height s/w `ON'

Threshold value



6 pulses in 1 sec

Detecting time



1 sec

FAIL SAFE

-

2008 Kia Sedona EX

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

Microsoft

Monday, May 24, 2010 4:19:18 PM

Page 162

© 2006 Mitchell Repair Information Company, LLC.

1. Many malfunctions in the electrical system are caused by poor harness and terminals.

Faults can also be caused by interference from other electrical systems, and mechanical or chemical
damage.

2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination,

deterioration, or damage.

3. Has a problem been found?

YES

Repair as necessary and go to "VERIFICATION VEHICLE REPAIR" procedure.

NO

Go to SIGNAL CIRCUIT INSPECTION procedure.

SIGNAL CIRCUIT INSPECTION

1. Check for open in harness

1. Ignition "OFF".

2. Measure resistance between terminal "28" of IMS and terminal "3" of power seat recline sensor.

Specification :Approx. 0 ohms

Fig. 132: Measuring Resistance Between Terminal 28 Of IMS And Terminal 3 Of Power Seat
Recline Sensor
Courtesy of KIA MOTORS AMERICA, INC.

3. Is the measured resistance within specifications?

YES

2008 Kia Sedona EX

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

Microsoft

Monday, May 24, 2010 4:19:18 PM

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© 2006 Mitchell Repair Information Company, LLC.

Go to step 2.

NO

Check for open in signal harness. Repair as necessary and go to "VERIFICATION OF
VEHICLE REPAIR" procedure.

2. Check for short in harness

1. Ignition "OFF".

2. Disconnect front height motor.

3. Measure resistance between terminal "28" of IMS and chassis ground.

Specification :Approx. infinity ohms

Fig. 133: Measuring Resistance Between Terminal 28 Of IMS And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

4. Is the measured resistance within specifications?

YES

Go to "POWER CIRCUIT INSPECTION" procedure.

NO

Check for short in signal harness. Repair as necessary and go to "VERIFICATION OF
VEHICLE REPAIR" procedure.

POWER SUPPLY CIRCUIT INSPECTION

MOTOR POWER CIRCUIT INSPECTION

1. Check for open in harness

1. Ignition "OFF"

2. Disconnect front height motor.

2008 Kia Sedona EX

2008 ACCESSORIES & BODY, CAB BCM (Body Control Module) - Sedona

Microsoft

Monday, May 24, 2010 4:19:18 PM

Page 164

© 2006 Mitchell Repair Information Company, LLC.