2009 NISSAN LATIO Service Repair Manual

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Page 3617 of 4331

NISSAN LATIO 2009 Service Repair Manual LT
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How to Perform Trouble Diagnosis
INFOID:0000000004306527
1. Confirm the symptom or customer complaint.
2. Understand operation, description and function description. Refer to LT-4, " System

LT
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How to Perform Trouble Diagnosis
INFOID:0000000004306527
1. Confirm the symptom or customer complaint.
2. Understand operation, description and function description. Refer to LT-4, " System Description " .
3. Perform the Preliminary Check. Refer to LT-11, " Preliminary Check " .
4. Check symptom and repair or replace the cause of the malfunction.
5. Do the headlamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary Check INFOID:0000000004306528
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM Refer to BCS-15, " BCM Power Supply and Ground Circuit Inspection " .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R Refer to PG-26, " IPDM E/R Power/Ground Circuit Inspection " .
CONSULT-III Function (BCM) INFOID:0000000004306529
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
WORK SUPPORT
Display Item List
DATA MONITOR
Display Item List BCM diagnostic
test item Diagnostic mode Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions. Item Description CONSULT-III Factory setting
BATTERY SAVER SET Exterior lamp battery saver control mode can be changed
in this mode. Selects exterior lamp battery saver control
mode between ON/OFF. ON
×
OFF — Monitor item Contents
IGN ON SW "ON/OFF" Displays "IGN position (ON)/OFF, ACC position (OFF)" judged from the ignition switch signal.
ACC ON SW "ON/OFF" Displays "ACC (ON)/OFF, Ignition OFF (OFF)" status judged from ignition switch signal.
HI BEAM SW "ON/OFF" Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting
switch signal.
HEAD LAMP SW 1 "ON/OFF" Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.
HEAD LAMP SW 2 "ON/OFF" Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.

Page 3618 of 4331

NISSAN LATIO 2009 Service Repair Manual Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
HEAD LAMP Allows headlamp relay (HI, LO) to operate by switching ON-OFF.
FR FOG LAMP Allows fog lamp relay to op

Page 3619 of 4331

NISSAN LATIO 2009 Service Repair Manual LT
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NOTE:
Perform monitoring of IPDM E/R data with the ignition swit ch ON. When the ignition switch is at ACC, the dis-
play may not be correct.
ACTIVE TEST
Headlamp High Beam Does No t Illumina

Page 3620 of 4331

NISSAN LATIO 2009 Service Repair Manual OK >> GO TO 3.
NG >> GO TO 4. OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and Installation of IPDM E/R " .
NG >> Replace BCM. Refer to BCS-18, " Removal and Installation of BCM " .
OK >> GO

Page 3621 of 4331

NISSAN LATIO 2009 Service Repair Manual LT
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OK or NG OK >> GO TO 7.
NG >> GO TO 8. OK >> Check front combination lamp connector for damage or
poor connection. Repair as necessary.
NG >> Repair harness. OK >> Replace IPDM E/R.

Page 3622 of 4331

NISSAN LATIO 2009 Service Repair Manual LT-16< SERVICE INFORMATION >
HEADLAMP (FOR USA)
4. Check voltage between headlamp harness connector and ground.
OK or NG OK >> GO TO 4.
NG >> GO TO 5. 4.
CHECK HEADLAMP GROUND CIRCUIT
1. Turn i

Page 3623 of 4331

NISSAN LATIO 2009 Service Repair Manual LT
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2. Select “DATA MONITOR” on “SELECT DIAG MODE”
screen. Make sure that “HEAD LAMP SW 1” and
“HEAD LAMP SW 2” turns ON-OFF li nked with operation of lighting swi

Page 3624 of 4331

NISSAN LATIO 2009 Service Repair Manual Auto Active Test " .
4. When headlamp low beam is operating, chec k voltage between headlamp harness connector and ground.
OK or NG OK >> GO TO 7.
NG >> GO TO 8. OK >> Check front combination lam

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