INFINITI FX35 2004 Service Manual

BL-44
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
CHECK BACK DOOR SWITCH
1. CHECK BACK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches (“BACK DOOR SW”) in “DATA MONITOR”
mode with CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.
Monitor item Condition
BACK DOOR SW CLOSE → OPEN: OFF → ON
PIIA6472E
Item ConnectorTerminal
(Wire color)Back door
conditionVoltage (V)
(Approx.)
(+) (-)
Back door switch B14 58 (L) GroundCLOSE
↓
OPEN9
↓
0
PIIA6473E

POWER DOOR LOCK SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. CHECK BACK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect back door switch connector.
3. Check voltage between back door switch connector D109 termi-
nal 7 and ground. (Check harness for open.)
4. Check continuity between back door switch connector D109 ter-
minal 7 and ground. (Check harness for short.)
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK BACK DOOR SWITCH
Check continuity between back door switch terminals 7 and 8.
OK or NG
OK >> GO TO 4.
NG >> Replace back door closure motor (door switch).7 (L) – Ground : Approx. 9V
PIIA6474E
7 (L) – Ground : Continuity should not exist.
PIIA6475E
Terminal Back door condition Continuity
7 – 8Closed No
Opened Yes
PIIA6476E

BL-46
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
4. CHECK BACK DOOR SWITCH GROUND HARNESS
Check continuity between back door switch connector D109 terminal
8 and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Key SwitchAIS004M2
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check ignition key switch “KEY ON SW” in “DATA MONITOR” mode
with CONSULT-II.

When key is inserted in ignition key cylinder

When key is removed from ignition key cylinder
Without CONSULT-II
Check voltage between BCM connector M3 terminal 37 (B/W) and ground.
OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2. (with intelligent key)
NG >> GO TO 3. (without intelligent key)8 (B) – Ground : Continuity should exist.
PIIA6477E
KEY ON SW : ON
KEY ON SW : OFF
PIIA6470E
Condition of key switchVoltage (V)
Approx.
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Battery voltage
Key switch is “OFF”. (Key is removed from IGN key cylinder.) 0
PIIA6378E

POWER DOOR LOCK SYSTEM
BL-47
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Revision: 2004 November 2004 FX35/FX45
2. CHECK KEY SWITCH (WITH INTELLIGENT KEY)
1. Disconnect key switch and ignition knob switch connector.
2. Check continuity between key switch and ignition knob switch
terminals 3 and 4.
OK or NG
OK >> Check the following.

15A fuse (No. 22, located in fuse and fusible link block)

Harness for open or short between key switch and fuse

Harness for open or short between BCM and key switch
NG >> Replace key switch.
3. CHECK KEY SWITCH (WITHOUT INTELLIGENT KEY)
1. Disconnect key switch connector.
2. Check continuity between key switch terminals 1 and 2.
OK or NG
OK >> Check the following.

15A fuse [No. 22, located in fuse block (J/B)]

Harness for open or short between key switch and fuse

Harness for open or short between BCM and key switch
NG >> Replace key switch.
Condition of key switch Continuity
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Yes
Key switch is “OFF”. (Key is removed from IGN key cylinder.) No
PIIA6140E
Condition of key switch Continuity
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Yes
Key switch is “OFF”. (Key is removed from IGN key cylinder.) No
PIIA2627E

BL-48
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Door Lock and Unlock SwitchAIS004M3
1. CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II
Check door lock and unlock switch (“CDL LOCK SW” and “CDL
UNLOCK SW”) in DATA MONITOR mode with CONSULT-II.

When door lock and unlock switch is turned to LOCK:

When door lock and unlock switch is turned to UNLOCK:
Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between BCM connector M3 terminal 22 and ground with oscilloscope when door lock
and unlock switch is turned “LOCK” or “UNLOCK”.
3. Make sure signals which are shown in the figure below can be
detected during 10 second just after door lock and unlock switch
is turned “LOCK” or “UNLOCK”.
OK or NG
OK >> Door lock and unlock switch circuit is OK.
NG >> GO TO 2.CDL LOCK SW : ON
CDL UNLOCK SW : ON
PIIA6538E
ConnectorTerminal
(Wire color)Signal
(Reference value)
(+) (–)
M3 22(OR) Ground
PIIA6379E
PIIA1297E

POWER DOOR LOCK SYSTEM
BL-49
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Revision: 2004 November 2004 FX35/FX45
2. CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM, power window main switch and front power window switch connectors.
3. Check continuity between BCM connector M3 terminal 22 and
power window main switch (door lock and unlock switch) con-
nector D6 terminal 14.
4. Check continuity between power window main switch (door lock
and unlock switch) connector D6 terminal 14 and ground.
5. Check continuity between BCM connector M3 terminal 22 and
front power window switch (door lock and unlock switch) con-
nector D36 terminal 16.
6. Check continuity between front power window switch (door lock
and unlock switch) connector D36 terminal 16 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.22 (OR) – 14 (Y) : Continuity should exist.
14 (Y) – Ground : Continuity should not exist.
PIIB0405E
22 (OR) – 16 (Y) : Continuity should exist.
16 (Y) – Ground : Continuity should not exist.
PIIB0406E

BL-50
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
3. CHECK DOOR LOCK AND UNLOCK SWITCH GROUND HARNESS

Check continuity between power window main switch (door lock
and unlock switch) connector D7 terminal 17 and ground.

Check continuity between power window sub-switch (front pas-
senger side) (door lock and unlock switch) connector D36 termi-
nal 11 and ground.
OK or NG
OK >> Replace power window main switch or power window sub-switch.
NG >> Repair or replace harness.
Check Door Lock Actuator (Driver side)AIS004M4
1. CHECK DOOR LOCK ACTUATOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock actuator (driver side) connector.
3. Check continuity between BCM connector M4 terminals 44, 50
and front door lock actuator (driver side) connector D10 termi-
nals 2, 3.
4. Check continuity between BCM connector M4 terminals 44, 50
and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.17 (B) – Ground : Continuity should exist.
PIIA6201E
11 (B) – Ground : Continuity should exist.
PIIA6202E
44 (Y) – 2 (GY) : Continuity should exist.
50 (PU) – 3 (PU) : Continuity should exist.
44 (Y) – Ground : Continuity should not exist.
50 (PU) – Ground : Continuity should not exist.
PIIA6539E

POWER DOOR LOCK SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. CHECK OUTPUT SIGNAL
1. Connect BCM and door lock actuator (driver side) connector.
2. Check voltage between BCM connector M4 terminals 44, 50 and
ground.
OK or NG
OK >> Check harness connection.
NG >> Replace BCM.
Check Door Lock Actuator (Passenger Side and Rear LH/RH)AIS004M5
1. CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and each door lock actuator connectors.
2. Check continuity between BCM connector M4 terminals 50, 51
and front door lock actuator passenger side, rear door lock actu-
ator LH/RH connectors D40, D52, D72 terminals 2, 3.
3. Check continuity between BCM connector M4 terminals 50, 51
and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
Con-
nectorTerminal
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M444 (Y)
GroundDriver door lock/unlock
switch is turned to UNLOCK.0 → Battery voltage
50 (PU)Driver door lock/unlock
switch is turned to LOCK.0 → Battery voltage
PIIA6383E
50 (PU) – 3 (PU) : Continuity should exist.
51 (W/B) – 2 (L or Y) : Continuity should exist.
50 (PU) – Ground : Continuity should not exist.
51 (W/B) – Ground : Continuity should not exist.
PIIA6540E

BL-52
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector M4 terminals 50, 51 and
ground.
OK or NG
OK >> Replace front door lock assembly (passenger side) or rear door lock actuator LH/RH.
NG >> Replace BCM.
Check Fuel Lid Opener Actuator AIS004M6
1. CHECK FUEL LID OPENER ACTUATOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM and fuel lid lock actuator connector.
3. Check continuity between BCM connector M4 terminals 44, 50
and fuel lid lock actuator connector B70 terminals 1, 2.
4. Check continuity between BCM connector M4 terminals 44, 50
and ground.
OK or NG
OK >> Replace fuel lid actuator.
NG >> Repair or replace harness.
Con-
nectorTerminal
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M450 (PU)
GroundDoor lock/unlock switch
is turned to LOCK.0 → Battery voltage
51 (W/B)Door lock/unlock switch
is turned to UNLOCK.0 → Battery voltage
PIIA6385E
44 (Y) – 2 (L) : Continuity should exist.
50 (PU) – 1 (PU) : Continuity should exist.
44 (Y) – Ground : Continuity should not exist.
50 (PU) – Ground : Continuity should not exist.
PIIA6386E

POWER DOOR LOCK SYSTEM
BL-53
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Revision: 2004 November 2004 FX35/FX45
Check Front Door Key Cylinder Switch (Lock) AIS004M7
1. CHECK FRONT DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK SIGNAL)
With CONSULT-II
Check front door key cylinder switch LH (“KEY CYL LK SW”) in
“DATA MONITOR” mode with CONSULT-II.

When key cylinder switch is turned to “LOCK”.
Without CONSULT-II
Check voltage between power window main switch (door lock and
unlock switch) connector D6 terminal 4 and ground.
OK or NG
OK >> Front door key cylinder switch circuit driver side (lock) is OK.
NG >> GO TO 2.
2. CHECK FRONT DOOR KEY CYLINDER SWITCH
1. Disconnect front door key cylinder switch driver side connector.
2. Check continuity between front door key cylinder switch driver
side terminals 1 and 5.
OK or NG
OK >> Check the following.

Front door key cylinder switch driver side ground circuit.

Harness for open or short between power window main switch (door lock and unlock switch)
and front door key cylinder switch driver side.
NG >> Replace front door key cylinder switch driver side.KEY CYL LK-SW : ON
PIIA6541E
ConnectorTerminal (Wire color)
Front door key cylinder
switch positionVoltage (V)
(Approx.)
(+) (-)
D6 4 (P) GroundNeutral / Unlock 5
Lock 0
PIIA6203E
Front door key cylinder switch position Continuity
Neutral / Unlock No
Lock Yes
PIIA6543E