Kia Sedona (2008 year). Instruction — part 26

VERIFICATION OF VEHICLE REPAIR

Refer to DTC C1101.

DTC C1625 CAN TIME-OUT ABS/TCS/ESC

COMPONENT LOCATION

Refer to DTC C1235.

GENERAL DESCRIPTION

Refer to DTC C1605.

DTC DESCRIPTION

The HECU checks the CAN communication lines for normal ESC control, and sets this code if a CAN message
is not transmitted within predefined time.

DTC DETECTING CONDITION

DTC DETECTING CONDITION CHART

COMPONENT INSPECTION

1. Ignition "OFF".

2. Engine "ON".

3. Does warning lamp remain On?

YES



Substitute with a known-good HECU and check for proper operation. If problem is corrected,

Item

Detecting Condition

Possible cause

DTC strategy



CAN massage monitoring



Inoperative HECU

Monitoring Period



Continuous

Enable Conditions



Faults are detected if CAN
message was not transmitted
on time by the CAN
controller of HECU.

Fail Safe



Inhibit the ESC control and
ABS/EBD control is
available. Meanwhile, stop
checking the ESC switch
failure under the ESC
control.

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

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replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR" procedure.

NO



Fault is intermittent caused by inoperative HECU or was repaired and HECU memory was not
cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC C1101.

DTC C1626 IMPLAUSIBLE CONTROL

COMPONENT LOCATION

Refer to DTC C1235.

GENERAL DESCRIPTION

The HECU send requirement data, such as Torque reduction, the number of fuel cut cylinders, and TCS control
requests, to the PCM (ECM & TCM) through CAN bus line. The PCM (ECM) performs fuel cut functions
according to requests from the HECU and retards ignition timing by torque reduction requests. The PCM
(TCM) maintains current gear positions during TCS control time, in order not to increase power which causes a
Kickdown shift.

DTC DESCRIPTION

Under normal conditions, the inlet valves of all four wheels are not closed during control for longer than 1.28s
or If the controller requests pressure-hold or pressure-decrease for longer than 1.28s, a fault is detected. The
ABS/ESC warning lamp is turned ON and the EBD warning lamp is turned OFF.

DTC DETECTING CONDITION

DTC DETECTING CONDITION

Item

Detecting Condition

Possible cause

DTC strategy



Signal monitoring

Case 1

Monitoring Period



Continuous

Enable Conditions



If the controller
requests pressure-
hold or pressure-
decrease for longer
than 1.28 s, a fault is
stored.

Monitoring Period



Continuous (at
vehicle reference
speed > 6 m/s, no

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

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COMPONENT INSPECTION

Refer to DTC C1101.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC C1101.

DTC C1702 VARIANT CODING ERROR

COMPONENT LOCATION

Refer to DTC C1235.

GENERAL DESCRIPTION

The HECU is programmed with a variant code based on the vehicle powertrain configuration. This variant code
is used to determine the appropriate ESC calculations.

DTC DESCRIPTION

The HECU checks the variant code after ignition. If a inappropriate variant code is detected or there is no
variant code, a fault is detected.

DTC DETECTING CONDITION

DTC DETECTING CONDITION

Case 2

detected under
voltage and a fault is
not already detected)



Inoperative HECU

Enable Conditions



The monitoring
reports a failure if
continuous ESC
control occurs for a
time period > = 10 s.

Fail Safe



The ABS/ESC
functions are
inhibited, allow the
EBD control.



The ABS/ESC
warning lamps are
activated.

Item

Detecting Condition

Possible cause

DTC strategy



Internal monitoring

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

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MONITOR SCAN TOOL DATA

VARIANT CODE

1. Check for improper installation of PCM (ECM & TCM)/ESC.

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

3. Ignition "ON".

4. Go in Anti-Lock brake system (figure 1).

5. Perform variant code.

6. Disconnect scan tool.

7. Ignition "OFF" and then ignition "ON". Go to "COMPONENT INSPECTION" Procedure.

Fig. 64: Scan Tool Display - Current Data
Courtesy of KIA MOTORS AMERICA, INC.

Monitoring Period



Once during startup.



Inoperative HECU



Replacement of PCM
(ECM & TCM)

Enable Conditions



During initialization, there is
no inputed valid variant code.



No variant code stored in
EEPROM.



Received variant code is
invalid.



There is a difference between
preset variant code and
detected variant code.

Fail Safe



The ABS/EBD/ESC functions
are inhibited.



The ABS/EBD/ESC warning
lamps are activated.

2008 Kia Sedona

2008 BRAKES ABS (Anti-Lock Brake System) - Sedona

Microsoft

Saturday, May 22, 2010 6:52:43 PM

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© 2006 Mitchell Repair Information Company, LLC.