Nissan Xterra. Instruction — part 61
BCS
INSPECTION AND ADJUSTMENT
BCS-3
< BASIC INSPECTION >
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BASIC INSPECTION
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000009482916
BEFORE REPLACEMENT
When replacing BCM, save or print current vehicle specification with CONSULT configuration before replace-
ment.
NOTE:
If “Before Replace ECU” cannot be used, use the “After Replace ECU” or “Instruction Configuration” after replac-
ing BCM.
AFTER REPLACEMENT
CAUTION:
• When replacing BCM, you must perform “After Replace ECU” with CONSULT.
- Complete the procedure of “After Replace ECU” in order.
- If you set incorrect “After Replace ECU”, incidents might occur.
- Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
• When replacing BCM, perform the system initialization (NATS).
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Work Procedure
INFOID:0000000009482917
1.
SAVING VEHICLE SPECIFICATION
CONSULT
Enter "Re/Programming, Configuration" and perform “Before Replace ECU” to save or print current vehicle
specification.
NOTE:
If “Before Replace ECU” cannot be used, use the "After Replace ECU" or "Instruction Configuration" after replac-
ing BCM.
>> GO TO 2.
2.
REPLACE BCM
BCS-50, "Removal and Installation"
.
>> GO TO 3.
3.
WRITING VEHICLE SPECIFICATION
CONSULT
1. Enter "Re/Programming, Configuration".
2. If “Before Replace ECU” operation was performed, automatically an "Operation Log Selection" screen will
be displayed. Select the applicable file from the "Saved Data List" and press “Confirm” to write vehicle
specification. Refer to
BCS-4, "CONFIGURATION : Work Procedure"
.
3. If “Before Replace ECU” operation was not performed, select "After Replace ECU" or "Instruction Configura-
tion" to write vehicle specification. Refer to
BCS-4, "CONFIGURATION : Work Procedure"
>> GO TO 4.
4.
INITIALIZE BCM (NATS)
Perform BCM initialization. (NATS)
>> Work End.
CONFIGURATION
BCS-4
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
CONFIGURATION : Description
INFOID:0000000009482918
Vehicle specification needs to be written with CONSULT because it is not written after replacing BCM.
Configuration has three functions as follows:
CAUTION:
• When replacing BCM, you must perform “Select Saved Data List” or "After Replace ECU" with CON-
SULT.
• Complete the procedure of “Select Saved Data List” or "After Replace ECU" in order.
• If you set incorrect “Select Saved Data List” or "After Replace ECU", incidents might occur.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
• Never perform “Select Saved Data List” or "After Replace ECU" except for new BCM.
CONFIGURATION : Work Procedure
INFOID:0000000009482919
1.
WRITING MODE SELECTION
CONSULT
Select “Reprogramming, Configuration” of BCM.
When writing saved data>>GO TO 2.
When writing instructionly>>GO TO 3.
2.
PERFORM “SAVED DATA LIST”
CONSULT
Automatically “Operation Log Selection” window will display if “Before Replace ECU” was performed. Select
applicable file from the “Save Data List” and press “Confirm”.
>> Work End.
3.
PERFORM “AFTER REPLACE ECU” OR “MANUAL CONFIGURATION”
CONSULT
1. Select “After Replace ECU” or “Instruction Configuration”.
2. Identify the correct model and configuration list. Refer to
BCS-5, "CONFIGURATION : Configuration List"
.
3. Confirm and/or change setting value for each item.
CAUTION:
Thoroughly read and understand the vehicle specification. ECU control may not operate normally
if the setting is not correct.
4. Select “Next”.
CAUTION:
Make sure to select “Next”, confirm each setting value and press “OK” even if the indicated con-
figuration of brand new BCM is same as the desirable configuration. If not, configuration which is
set automatically by selecting vehicle model can not be memorized.
5. When "Completed", select "End".
>> GO TO 4.
4.
OPERATION CHECK
Confirm that each function controlled by BCM operates normally.
>> Work End.
Function
Description
"Before Replace ECU"
• Reads the vehicle configuration of current BCM.
• Saves the read vehicle configuration.
"After Replace ECU"
Writes the vehicle configuration with instruction selection.
"Select Saved Data List"
Writes the vehicle configuration with saved data.
BCS
INSPECTION AND ADJUSTMENT
BCS-5
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CONFIGURATION : Configuration List
INFOID:0000000009482920
CAUTION:
Thoroughly read and understand the vehicle specification. Incorrect settings may result in abnormal
control of ECU.
⇔: Items which confirm vehicle specifications
MANUAL SETTING ITEM
Items
Setting value
KEYLESS ENTRY
WITH
⇔WITHOUT
AUTO LIGHT
WITH
⇔WITHOUT
DTRL
WITH
⇔WITHOUT
THEFT ALARM
WITH
⇔WITHOUT
AUTO DOOR UNLOCK TIMING
A/T
⇔M/T
BCS-6
< SYSTEM DESCRIPTION >
BODY CONTROL SYSTEM
SYSTEM DESCRIPTION
BODY CONTROL SYSTEM
System Description
INFOID:0000000009482921
OUTLINE
• BCM (Body Control Module) controls the various electrical components. It inputs the information required to
the control from CAN communication and the signal received from each switch and sensor.
• BCM has combination switch reading function for reading the operation status of combination switches (light,
turn signal, wiper and washer) in addition to a function for controlling the operation of various electrical com-
ponents. It also has the signal transmission function as the passed point of signal and the power consump-
tion control function that reduces the power consumption with the ignition switch OFF.
• BCM is equipped with the diagnosis function that performs the diagnosis with CONSULT and various set-
tings.
BCM control function list
System
Refer to
Combination switch reading system
Signal buffer system
Power consumption control system
Auto light system (if equipped)
Turn signal and hazard warning lamp system
Headlamp system
Front fog lamp system (if equipped)
Off-road lamps system (if equipped)
Daytime running light system (Canada only)
Interior room lamp control system
Interior room lamp battery saver system
BCS-17, "INT LAMP : CONSULT Function (BCM - INT LAMP)"
Front wiper and washer system
Rear wiper and washer system
Warning chime system
WCS-4, "WARNING CHIME SYSTEM : System Diagram"
Door lock system
DLK-12, "DOOR LOCK AND UNLOCK SWITCH : System Diagram"
(NATS) Nissan anti-theft system
Vehicle security system
Rear window defogger system
Remote keyless entry system
DLK-14, "REMOTE KEYLESS ENTRY : System Diagram"
Power window system
RAP (retained accessory power) system
BCS-24, "RETAINED PWR : CONSULT Function (BCM - RETAINED PWR)"
TPMS (tire pressure monitoring system)
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