2008 INFINITI FX35 ECU

BL-176
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnosis
INFOID:0000000001327913
WORK FLOW
 “POWER DOOR LOCK SYSTEM” Diagnosis; refer to BL-36, "Work Flow".
 “REMOTE CONTROL SYSTEM” Diagnosis; refer to BL-62, "
Work Flow".
 “INTELLIGENT KEY SYSTE M” Diagnosis; refer to BL-103, "
Diagnosis Procedure".
PIIA6909E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-177
< SERVICE INFORMATION >
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Preliminary CheckINFOID:0000000001327914
The system operation is canceled by turning ignition switch to “ACC” at any step between START and ARMED
in the following flow chart.
After performing preliminary check, go to symptom chart. Refer to BL-177, "
Trouble Diagnosis Symptom
Chart".
Trouble Diagnosis Symptom ChartINFOID:0000000001327915
PIIA6910E
Procedure
Diagnostic procedure Refer to page
Symptom
1 Vehicle security
system cannot be
set by ···· Door switch Diagnostic Procedure 1 (Check door, hood and back door switch)
BL-178
Lock / unlock switch Diagnostic Procedure 6 (Check door lock / unlock switch)BL-184
Door outside key Diagnostic Procedure 3 (Check door key cylinder switch)BL-183
Key fob Check remote keyless entry. BL-50
Intelligent Key Check Intelligent Key.BL-76
— If the above systems are “OK”, replace BCM.BCS-13
Security indicator does not turn “ON”.Diagnostic Procedure 2 (Check security indicator lamp)
BL-182If the above systems are “OK”, replace BCM.BCS-13
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BL-178
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
*1: Make sure the system is in the armed phase.
Diagnosis Procedure 1INFOID:0000000001327916
1 – 1 CHECK DOOR SWITCH
First perform the “SELF-DIAG RESU LTS” in “BCM” with CONSULT-III, when pe rform the each trouble
diagnosis. Refer to BCS-13, "
U1000 CAN Communication Circuit".
1.CHECK DOOR SWITCH INPUT SIGNAL
With CONSULT-III
Check (“DOOR SW-DR”, “DOOR SW-AS”, “DOOR SW-RR” and “DOOR SW-RL”) in “DATA MONITOR” mode
with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector M3, B14 terminals and ground.
2 *1 Vehicle security
system does not
alarm when ···· Any door is opened.
Diagnostic Procedure 1 (Check door, hood and back door switch)
BL-178If the above systems are “OK”, replace BCM.BCS-13
3Vehicle security
alarm does not ac-
tivate. Horn alarm
Diagnostic Procedure 4 (Check vehicle security horn alarm)
BL-183
Check horn function. BL-72
If the above systems are “OK”, replace BCM.BCS-13
Head lamp alarmDiagnostic Procedure 5 (Check head lamp alarm)
BL-183If the above systems are “OK”, replace BCM.BCS-13
4Vehicle security
system cannot be
canceled by ···· Door outside key
Diagnostic Procedure 3 (Check door key cylinder switch)
BL-183
If the above systems are “OK”, check power window main switch. EI-36
Key fobCheck remote keyless entry function.
BL-50If the above systems are “OK”, replace BCM.BCS-13
Intelligent KeyCheck Intelligent Key
BL-78If the above systems are “OK”, replace BCM.BCS-13
Procedure
Diagnostic procedure Refer to page
Symptom
Monitor item Condition
DOOR SW-DR OPEN : ON
CLOSE : OFF
DOOR SW-AS OPEN : ON
CLOSE : OFF
DOOR SW-RR OPEN : ON
CLOSE : OFF
DOOR SW-RL OPEN : ON
CLOSE : OFF
Item Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
PIIA6223E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-179
< SERVICE INFORMATION >
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OK or NG
OK >> Door switch circuit is OK, and go to “1 – 2 HOOD SWITCH CHECK”.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and door switches connector.
3. Check continuity between BCM connector B14 terminals 62, 63 and door switch connector B26, B46 terminal 1, and ground.
4. Check continuity between BCM connector M3 terminals 12, 13 and door switch connector B36, B206 terminal 1, and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR SWITCH
Check continuity between each door switch terminal 1 and ground
part of door switch.
OK or NG
OK >> GO TO 4.
NG >> Replace malfunctioning door switch.
Front door switch
driver side 62 (W)
Ground OPEN 0
CLOSE Battery voltage
Front door switch
passenger side 12 (P/B) OPEN 0
CLOSE Battery voltage
Rear door switch
LH 63 (P) OPEN 0
CLOSE Battery voltage
Rear door switch
RH 13 (P/L) OPEN 0
CLOSE Battery voltage
BCM – Front door switch (driver side)
62 (W) – 1 (W) : Conti nuity should exist.
BCM – Rear door switch LH
63 (P) – 1 (P) : Conti nuity should exist.
BCM – Ground
62 (W) – Ground : Continui ty should not exist.
63 (P) – Ground : Continuity should not exist.
PIIA6225E
BCM – Front door switch (passenger side)
12 (P/B) – 1 (SB) : Cont inuity should exist.
BCM – Rear door switch RH
13 (P/L) – 1 (P) : Cont inuity should exist.
BCM – Ground
12 (P/B) – Ground : Conti nuity should not exist.
13 (P/L) – Ground : Continuity should not exist.
PIIA6224E
Terminal Condition Continuity
1 Ground part of
door switch Pushed No
Released Yes
PIIA3351E
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BL-180
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
4.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector M3, B14 terminals 12, 13, 62, 63 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace BCM.
1 – 2 HOOD SWITCH CHECK
1.CHECK HOOD SWITCH
Check hood switch and hood fitting condition.
OK or NG
OK >> GO TO 2.
NG >> Adjust installation of hood switch.
2.CHECK HOOD SWITCH INPUT SIGNAL
With CONSULT-III
Check (“HOOD SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Hood switch is OK, and go to “1 – 3 BACK DOOR SWITCH CHECK”.
NG >> GO TO 3.
3.CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect hood switch connector. 12 (P/B) – Ground : Battery voltage
13 (P/L) – Ground : Battery voltage
62 (W) – Ground : Battery voltage
63 (P) – Ground : Battery voltage
PIIA6223E
Monitor item Condition
HOOD SW OPEN : ON
CLOSE : OFF
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
E9 56 (LG) Ground OPEN 0
CLOSE Battery voltage
PIIA6228E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-181
< SERVICE INFORMATION >
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3. Check continuity between hood switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace hood switch.
4.CHECK IPDM E/R OUTPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Check the following.  Hood switch ground circuit.
 Harness for open or short between hood switch andIPDM E/R.
NG >> Replace IPDM E/R
1 – 3 BACK DOOR SWITCH CHECK
1.CHECK BACK DOOR SWITCH INPUT SIGNAL
With CONSULT-III
Check (“BACK DOOR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
Terminals Condition Continuity
1 2 Pressed No
Released Yes
PIIA2498E
56 (LG) – Ground : Battery voltage
PIIA6228E
Monitor item Condition
BACK DOOR SW OPEN : ON
CLOSE : OFF
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B14 58 (L) Ground OPEN 0
CLOSE 9
PIIA6229E
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BL-182
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
3. Check continuity between BCM connector B14 terminal 58 and
back door closure motor connector D109 terminal 7.
4. Check continuity between BCM connector B14 terminal 58 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK GROUND CIRCUIT
Check continuity between back door closure motor connector D109
terminal 8 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK BACK DOOR SWITCH
Check continuity between back door closure motor D109 terminals 7
and 8.
OK or NG
OK >> GO TO 5.
NG >> Replace back door closure motor.
5.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector B14 terminal 58 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace BCM.
Diagnosis Procedure 2INFOID:0000000001327917
SECURITY INDICATOR LAMP CHECK
1.SECURITY INDICATOR LAMP ACTIVE TEST 58 (L) – 7 (L) : Cont
inuity should exist.
58 (L) – Ground : Continuity should not exist.
PIIA6226E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Terminals Back door condition Continuity
78 Open Yes
Close No
PIIA9934E
58 (L) – Ground : Approx. 9V
PIIA6229E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-183
< SERVICE INFORMATION >
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With CONSULT-III
Check (“THEFT IND”) in “ACTIV E TEST” mode with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground.
OK or NG
OK >> Security indicator lamp is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and security indicator lamp connector.
3. Check continuity between BCM connector M3 terminal 23 and security indicator lamp connector M38 terminal 2.
OK or NG
OK >> Check the following.  Harness for open or short between BCM and securityindicator lamp.
 10A fuse [No.19, located in fuse block (J/B)]
NG >> Repair or replace harness between BCM and security indicator lamp.
Diagnosis Procedure 3INFOID:0000000001327918
FRONT DOOR KEY CYLINDER SWITCH CHECK
1.CHECK KEY CYLINDER SWITCH OPERATION
Check door key cylinder switch using key.
Do doors lock / unlock when using the key?
YES >> Front door key cylinder switch operation is OK.
NO >> Check door key cylinder switch circuit. Refer to GW-43, "
Check Front Door Key Cylinder Switch".
Diagnosis Procedure 4INFOID:0000000001327919
VEHICLE SECURITY HORN ALARM CHECK
1.CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
YES >> Check harness for open or shor t between IPDM E/R and horn relay.
NO >> Check horn circuit. Refer to WW-48
.
Diagnosis Procedure 5INFOID:0000000001327920
VEHICLE SECURITY HEADLAMP ALARM CHECK
Perform operation shown on display indicator lamp
should illuminate.
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M3 23 (G/OR) Ground Illuminates 0
Goes off Battery voltage
PIIA6230E
23 (G/OR) – 2 (G/OR) : Co
ntinuity should exist.
PIIA6231E
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