Kia Sedona (2008 year). Manual - part 153

Fig. 68: Identifying Component Location - CAN Bus Physical Error, Bus Failure 
Courtesy of KIA MOTORS AMERICA, INC. 

GENERAL DESCRIPTION 

To make system be more efficient, Body Control Module (hereinafter referred to BCM) applies CAN 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 4:19:17 PM

Page 81 

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(Controller Area Network) communication system. CAN is a kind of communication system which can make 
related component share system information with just two line instead of complex individual signal line. It 
consists of related component and CAN BUS which consists of CAN high line and CAN low line. Each 
component can send and receive information by binary signal via CAN BUS. The related components for BCM 
are IPM, ADM, DDM, FAM, RAM, IMS and cluster module. 

DTC DESCRIPTION 

The ECM sets DTC B1602 if there's any short circuit in CAN high line and CAN low line including short to 
each other. 

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 (DTC s)" mode and monitor "DTC Status" parameter.  

4. Is the DTC B1602 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 

Refer to DTC B1102. 

SIGNAL CIRCUIT INSPECTION 

1. Check CAN high communication circuit 

Item

Detecting Condition

Possible Cause

DTC Strategy

-



Short to chassis ground or 
battery in CAN high line  



Short to chassis ground or 
battery in CAN low line  



CAN low short to high  

Enable Conditions

-

Threshold value

-

Detecting time

-

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 4:19:17 PM

Page 82 

© 2006 Mitchell Repair Information Company, LLC. 

1. Ignition "ON" and Engine "OFF".  

2. Connect scan tool and select VEHICLE SCOPEMETER function.  

3. Measure waveform between terminal "BCM-IF-30" of IPM and chassis ground. 

Specification: CAN communication waveform is displayed 

Fig. 69: Measuring Waveform Between Terminal BCM-IF-30 Of IPM And Chassis Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured waveform within specifications? 

The existence of CAN communication waveform itself shows there's no trouble in CAN 
communication circuit. If there's any short in harness, no signal is detected. 

YES  

Go to step 2. 

NO  

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

2. Check CAN low communication circuit 

1. Ignition "ON" and Engine "OFF".  

2. Connect scan tool and select VEHICLE SCOPEMETER function.  

3. Measure waveform between terminal "BCM-IF-39" of BCM ECU and chassis ground. 

Specification: CAN communication waveform is displayed

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 4:19:17 PM

Page 83 

© 2006 Mitchell Repair Information Company, LLC. 

Fig. 70: Measuring Waveform Between Terminal BCM-IF-39 Of BCM ECU And Chassis 
Ground 
Courtesy of KIA MOTORS AMERICA, INC. 

4. Is the measured waveform within specifications? 

The existence of CAN communication waveform itself shows there's no trouble in CAN 
communication circuit. If there's any short in harness, no signal is detected 

YES  

Go to "COMPONENT INSPECTION" procedure. 

NO  

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

COMPONENT INSPECTION 

1. Check Related component 

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

2. Ignition "ON" & engine "OFF".  

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

4. Check if the DTC is erased while disconnecting related component one after another. 

Related component :IPM, ADM, DDM, FAM, RAM, IMS, Cluster module. 

5. Is the DTC erased? 

YES  

Substitute with a known-good pertinent component and check for proper operation. If the problem 
is corrected, replace pertinent component and then go to "VERIFICATION OF VEHICLE 

 

2008 Kia Sedona EX 

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

  

Microsoft 

 

Monday, May 24, 2010 4:19:17 PM

Page 84 

© 2006 Mitchell Repair Information Company, LLC.