ignition INFINITI FX35 2008 Service Manual

BL-126
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
Check Stop Lamp Switch
INFOID:0000000001327864
1.CHECK STOP LAMP SWIT CH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch connector E210 termi- nal 1 (GY) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between stop lamp switch and fuse.
2.CHECK STOP LAMP SWITCH OPERATION
Check continuity between stop la mp switch connector E210 terminal
1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace stop lamp switch.
3.CHECK STOP LAMP SWITCH GROUND CIRCUIT
1. Check continuity between stop lamp switch connector E210 ter- minal 2 (P) and Intelligent Key unit connector M34 terminal 26
(P/L).
2. Check continuity between stop lamp switch connector E210 ter- minal 2 (P) and ground.
OK or NG
OK >> Stop lamp switch is OK.
NG >> Repair or replace harness.
Check Park Position SwitchINFOID:0000000001327865
1.CHECK PARK POSITION SWITCH INPUT SIGNAL
1. Turn ignition knob LOCK position.
2. Check voltage between Intelligent Key unit connector and ground. 1 (GY) - Ground : Battery voltage
PIIA6811E
1 - 2
Brake pedal depressed : Continuity should exist.
Brake pedal not de-
pressed
: Continuity should not exist.
PIIA6800E
2 (P) - 26 (P/L) : Continuity should exist.
2 (P) - Ground : Continuity should not exist.
PIIA6801E
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BL-128
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
Check continuity between A/T device (park position switch) connec-
tor M67 terminal 2 (B) and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Select Unlock RelayINFOID:0000000001327866
1.CHECK SELECT UNLOCK RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect passenger side select unlock relay connector.
3. Check voltage between passenger side select unlock relay con- nector M30 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace passenger side select unlock relay power supply circuit.
2.CHECK HARNESS
1. Disconnect Intelligent Key unit connector.
2. Check continuity between passenger side select unlock relay connector M30 terminal 2 and Intelligent Key unit connector
M34 terminal 40.
3. Check continuity between passenger side select unlock relay connector M30 terminal 2 and ground.
OK or NG
OK >> Replace passenger side select unlock relay.
NG >> Repair or replace harness between passenger side select unlock relay and Intelligent Key unit.
Check Hazard FunctionINFOID:0000000001327867
1.CHECK HAZARD WARNING LAMP
Does hazard warning lamp flash with hazard switch?
YES or NO
YES >> Hazard warning lamp circuit is OK.
NO >> Check hazard circuit. Refer to LT- 7 8
.
2 (B) – Ground : Continuity should exist.
PIIB9066E
1 (L/R) – Ground : Approx. 12V
PIIA6954E
2 (BR/W) – 40 (BR/W) : Continuity should exist.
2 (BR/W) – Ground : Conti
nuity should not exist.
PIIA6955E
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INTELLIGENT KEY SYSTEMBL-129
< SERVICE INFORMATION >
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Check Horn FunctionINFOID:0000000001327868
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, then perform the trouble diagnosis of
malfunction system indicated “SELF-DI AG RESULTS” of “BCM”. Refer to BCS-13, "
U1000 CAN Communica-
tion Circuit".
1.CHECK HORN FUNCTION
Does horn sound with horn switch?
YES or NO
YES >> Horn circuit is OK.
NO >> Check horn circuit. Refer to WW-48, "
Wiring Diagram - HORN -".
Check Headlamp FunctionINFOID:0000000001327869
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, then perform the trouble diagnosis of
malfunction system indicated “SELF-DI AG RESULTS” of “BCM”. Refer to BCS-13, "
U1000 CAN Communica-
tion Circuit".
1.CHECK HEADLAMP OPERATION
Does headlamp come on when turning lighting switch “ON”?
YES or NO
YES >> Headlamp operation circuit is OK.
NO >> Check headlamp system. Refer to LT- 5 , "
System Description".
Check IPDM E/R OperationINFOID:0000000001327870
1.CHECK IPDM E/R INPUT VOLTAGE
Check voltage between IPDM E/R connector E9 terminal 51 (SB) and ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> GO TO 2.
2.CHECK IPDM E/R HARNESS
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R connector E9 terminal 51 (SB) and horn relay connector E10 termi-
nal 1 (SB).
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness. 51 (SB) – Ground : Battery voltage
PIIA6403E
51 (SB) – 1 (SB) : Continuity should exist.
PIIA6404E
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BACK DOOR AUTO CLOSURE SYSTEMBL-153
< SERVICE INFORMATION >
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Work FlowINFOID:0000000001327892
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-148, "
System Description".
3. Perform the preliminary check, Refer to BL-153, "
Preliminary Check"
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-153,
"Trouble Diagnosis Chart by Symptom".
5. Does back door auto closure system operate nor mally? If Yes, GO TO 6, If No, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001327893
Remove the fuse No.18 for the back door cl osure with the back door closure inactive.
Check that the back door can be open / close normally.
CAUTION:
It is judged it is abnormal, disc ontinues closure operation, and drive lever returns to a neutral position
if not becoming full-latch within about three seconds after half-latch.
When this operation is done cont inuously three times, both back door closure and back door opener
switch are not operated because the func tion of back door closure is stopped.
Thing to reset power supply by pull ing out and opening fuse in that case.
Trouble Diagnosis Chart by SymptomINFOID:0000000001327894
Check Back Door Closure Control Unit Power Supply and Ground CircuitINFOID:0000000001327895
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector D106 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following.  15A fuse [No.18, located in fuse block (J/B)]
 Harness for open or short between back door closurecontrol unit and fuse.
Symptom Diagnostic procedure and repair order Refer to page
Back door closure does not operate. 1. Check back door closure motor power supply and
ground circuit
BL-153
2. Check half-latch switch
BL-154
3. Check close switchBL-155
4. Check open switchBL-156
5. Check closure motorBL-161
6. Replace back door closure control unit.BL-162
Back door does not open (with Intelligent Key system).1. Check Intelligent Key system
BL-1032. Check back door opener switchBL-157
Back door does not open1. Check back door opener switch
BL-1592. Check unlock sensorBL-160
3. Replace back door closure control unit.BL-162
Back door does not enter fully closed states through
back door closure operates.1. Back door fitting adjustment.
BL-141
2. Replace back door lock assembly.BL-146
1 (R) – Ground : Battery voltage
PIIA6166E
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BL-154
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
2.CHECK GROUND CIRCUIT
1. Disconnect back door closure control unit connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 4 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
Check Half-Latch SwitchINFOID:0000000001327896
1.CHECK HALF-LATCH SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure c ontrol unit connector and ground with oscilloscope.
OK or NG
OK >> Half-latch switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control uni t and back door closure motor connector.
2. Check continuity between back door closure control unit con-
nector D106 terminal 7 and back door closure motor connector
D109 terminal 6.
3. Check continuity between back door closure control unit con- nector D106 terminal 7 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK GROUND CIRCUIT 4 (B) – Ground : Continuity should exist.
PIIA6167E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 7 (OR) Ground Fully open
→
fully closed
PIIA6168ESIIA1479J
7 (OR) – 6 (OR) : Cont inuity should exist.
7 (OR) – Ground : Continuity should not exist.
PIIA6169E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-155
< SERVICE INFORMATION >
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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 CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 7 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Close SwitchINFOID:0000000001327897
1.CHECK CLOSE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure control unit connector and ground with oscilloscope.
OK or NG
OK >> Close switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control uni t and back door closure motor connector.
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
7 (OR) – Ground : Battery voltage
PIIA6172E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 8 (L) Ground Fully open
→
fully closed
PIIA6171ESIIA1478J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-156
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
2. Check continuity between back door closure control unit con-nector D106 terminal 8 and back door closure motor connector
D109 terminal 5.
3. Check continuity between back door closure control unit con- nector D106 terminal 8 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 CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 8 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Open SwitchINFOID:0000000001327898
1.CHECK OPEN SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure c ontrol unit connector and ground with oscilloscope.
OK or NG
8 (L) – 5 (L) : Conti nuity should exist.
8 (L) – Ground : Continuity should not exist.
PIIA6174E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
8 (L) – Ground : Battery voltage
PIIA6173E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 9 (P) Ground Fully open
→
fully closed
PIIA6175ESIIA1481J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-157
< SERVICE INFORMATION >
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OK >> Open switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control uni t and back door closure motor connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 9 and back door closure motor connector
D109 terminal 4.
3. Check continuity between back door closure control unit con- nector D106 terminal 9 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 CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 9 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Back Door Opener S witch (With Intelligent Key)INFOID:0000000001327899
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground. 9 (P) – 4 (P) : Continuity should exist.
9 (P) – Ground : Continuity should not exist.
PIIA6176E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
9 (P) – Ground : Battery voltage
PIIA6177E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-159
< SERVICE INFORMATION >
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Check continuity between back door opener switch terminals 1 and
2.
OK or NG
OK >> GO TO 6.
NG >> Replace back door opener switch.
6.CHECK BACK DOOR CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 6 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Replace back door closure control unit.
Check Back Door Opener S witch (Without Intelligent Key)INFOID:0000000001327900
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground.
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control unit and back door opener switch connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 6 and back door opener switch connector
D112 terminal 1.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between back door closure control unit and back door opener switch.
3.CHECK GROUND CIRCUIT
Terminals Condition Continuity
12 Back door opener switch: ON Yes
Back door opener switch: OFF No
PIIA6181E
6 (LG) – Ground : Approx. 5V
PIIA6178E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D106 6 (Y) Ground Back door opener switch
: ON
0
Back door opener switch
: OFF 5
PIIA6178E
6 (Y) – 1 (Y) : Continuity should exist.
PIIA6179E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-160
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
Check continuity between back door opener switch connector D112
terminal 2 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK BACK DOOR OPENER SWITCH
Check continuity between back door opener switch terminals 1 and
2.
OK or NG
OK >> GO TO 5.
NG >> Replace back door opener switch.
5.CHECK BACK DOOR CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 6 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace back door closure control unit.
Check Unlock Sensor (W ithout Intelligent Key)INFOID:0000000001327901
1.CHECK UNLOCK SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control unit and front door lock assembly (passenger side) connector.
2 (B) – Ground : Continuity should exist.
PIIA6180E
Terminals Condition Continuity
12 Back door opener switch: ON Yes
Back door opener switch: OFF No
PIIA6181E
6 (Y) – Ground : Approx. 5V
PIIA6178E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D106 5 (W) Ground Passenger side door lock is
locked
5
Passenger side door lock is
unlocked 0
PIIA6182E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C