INFINITI FX35 2004 Service Manual

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Revision: 2004 November 2004 FX35/FX45
Detention Switch (P Range Switch) Circuit CheckAIS002XW
1. CHECK FUNCTION
With CONSULT-II
Make sure when the A/T selector lever is in P position, “P POSITION
SW” on the DATA MONITOR becomes ON.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between drive seat control unit conductor and
ground.
OK or NG
OK >> Detention switch circuit is OK.
NG >> GO TO 2.
2. CHECK DETENTION SWITCH POWER SUPPLY CIRCUIT HARNESS
1. Key is removed form ignition key cylinder.
2. Disconnect driver seat control unit connector and A/T device
(detention switch) connector.
3. Check continuity between driver seat control unit connector
B152 terminal 17 (PU) and A/T device (detention switch) con-
nector M67 terminal 3 (R/Y).
4. Check continuity between driver seat control unit connector
B152 terminal 17 (PU) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between driver seat control unit and A/T device (detention switch).
Monitor item
[OPERATION or UNIT]Contents
P POSITION SW“ON/
OFF”The selector lever position “P position (ON)/other than
P position (OFF)” judged from the detente switch sig-
nal is displayed.
PIIA6950E
ConnectorTerminals
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B152 17 (PU) GroundSelector lever other than P
position.Battery voltage
Selector lever sifted to P
position.0
PIIA6702E
17 (PU) – 3 (R/Y) : Continuity should exist.
17 (PU) – Ground : Continuity should not exist.
PIIA6701E

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3. CHECK DETENTION SWITCH
Check continuity between detection switch as follows.
OK or NG
OK >> GO TO 4.
NG >> Replace detention switch.
4. CHECK DETENTION SWITCH GROUND HARNESS
1. Check continuity between automatic drive positioner control unit
connector M67 terminal 2 (B) and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between detention switch and
ground.
Key Switch and Key Lock Solenoid Circuit Check (With Intelligent Key)AIS002XY
1. CHECK KEY SWITCH AND KEY LOCK SOLENOID POWER SUPPRY CIRCUIT
With CONSULT-II
Touch "BCM". With “IGN KEY SW” on the DATA MONITOR, Check
ON/OFF operation.
*: Refer to BL-40, "Data Monitor" .
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Key switch and ignition knob circuit is OK.
NG >> GO TO 2.
Terminals Condition Continuity
32P position Continuity should exist.
Other than P position Continuity should not exist.
PIIA6703E
2 (B) – Ground : Continuity should exist.
PIIA6704E
Monitor item [OPERA-
TION or UNIT]Contents
IGN KEY SW
*“ON/
OFF”Key inserted (ON)/key removed (OFF) status judged
from the key-in detection switch is displayed.
PIIA0298E

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Revision: 2004 November 2004 FX35/FX45
2. CHECK KEY SWITCH AND KEY LOCK SOLENOID POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch connector and key lock solenoid connec-
tor.
3. Check voltage between key switch and key lock solenoid con-
nector M22 terminal 3 (L/R) and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between key switch and key lock sole-
noid and fuse.
3. CHECK KEY SWITCH
Check continuity between key switch as follows.
OK or NG
OK >> GO TO 4.
NG >> Replace detention switch.
4. CHECK HARNESS CONTINUITY
1. Disconnect key switch and ignition knob switch connector and
BCM connector.
2. Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and BCM connector M3 termi-
nal 37 (B/W).
3. Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and ground.
OK or NG
OK >> Key switch and ignition knob switch circuit is OK.
NG >> Repair or replace harness between key switch and ignition knob switch and BCM.3 (L/R) – Ground : Battery voltage.
PIIA5093E
Terminals Condition Continuity
3 – 4Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
4 (B/W) – 37 (B/W) : Continuity should exist.
4 (B/W) – Ground : Continuity should not exist.
PIIA5095E

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Key Switch Circuit Check (Without Intelligent Key)AIS003G1
1. CHECK KEY SWITCH
With CONSULT-II
Touch "BCM". With “IGN KEY SW” on the DATA MONITOR, Check
ON/OFF operation.
*:Refer to BL-40, "Data Monitor" .
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2.
2. CHECK KEY SWITCH AND KEY LOCK SOLENOID POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch connector.
3. Check voltage between key switch connector M23 terminal 2 (L/
R) and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between key switch and fuse.
3. CHECK KEY SWITCH
Check continuity between key switch as follows.
OK or NG
OK >> GO TO 4.
NG >> Replace key switch.
Monitor item [OPERA-
TION or UNIT]Contents
IGN KEY SW
*“ON/
OFF”Key inserted (ON)/key removed (OFF) status judged
from the key-in detection switch is displayed.
PIIA0298E
2 (L/R) – Ground : Battery voltage.
PIIA5092E
Terminals Condition Continuity
1 – 2Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6141E

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4. CHECK HARNESS CONTINUITY
1. Disconnect key switch and connector and BCM connector.
2. Check continuity between key switch connector M23 terminal 1
(B/W) and BCM connector M3 terminal 37 (B/W).
3. Check continuity between key switch connector M23 terminal 1
(B/W) and ground.
OK or NG
OK >> Key switch and circuit is OK.
NG >> Repair or replace harness between key switch and BCM.
Seat Memory Switch Circuit CheckAIS002Y0
1. CHECK FUNCTION
With CONSULT-II
With “SET SW,MEMORY SW1, MEMORY SW2” on the DATA MON-
ITOR, operate the switch to check ON/OFF operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Seat memory switch circuit is OK.
NG >> GO TO 2.1 (B/W) – 37 (B/W) : Continuity should exist.
1 (B/W) – Ground : Continuity should not exist.
PIIA5094E
Monitor item [OPERATION or
UNIT]Contents
MEMORY SW1 “ON/OFF”ON/OFF status judged from the seat
memory switch 1 signal is displayed.
MEMORY SW2 “ON/OFF”ON/OFF status judged from the seat
memory switch 2 signal is displayed.
SET SW “ON/OFF”ON/OFF status judged from the setting
switch signal is displayed.
PIIA0309E

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2. CHECK SEAT MEMORY SWITCH
1. Turn ignition switch OFF.
2. Disconnect "memory switch and lumber support switch" connec-
tor.
3. Operate the setting switch and memory switch.
4. Check continuity between "memory switch and lumber support
switch" connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace "memory switch and lumber support switch" and lumber support switch.
3. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector.
2. Check continuity between driver seat control unit connector
B152 terminals 22 (L/G), 34 (L/W), 35 (L/B) and "memory switch
and lumber support switch" connector B158 terminals 22 (L/G),
34 (L/W), 35 (L/B).
3. Check continuity between automatic drive positioner control unit
connector M19 terminals 22 (L/G), 34 (L/W), 35 (L/B) and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between driver seat control unit and "memory switch and lumber sup-
port switch".
Terminals Condition Continuity
34
(L/W)
61 (B/Y)Set switch: ON Yes.
Set switch: OFF No.
22
(L/G)Memory switch 1 ON Yes.
Memory switch 1: OFF No.
35
(L/B)Memory switch 2: ON Yes.
Memory switch 2: OFF No.
PIIA6951E
22 (L/G) – 22 (L/G) : Continuity should exist.
34 (L/W) – 34 (L/W) : Continuity should exist.
35 (L/B) – 35 (L/B) : Continuity should exist.
22 (L/G) – Ground : Continuity should not exist.
34 (L/W) – Ground : Continuity should not exist.
35 (L/B) – Ground : Continuity should not exist.
PIIA5075E

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4. CHECK "MEMORY SWITCH AND LUMBER SUPPORT SWITCH" GROUND CIRCUIT
Check continuity between "memory switch and lumber support
switch" B158 terminal 61 (B/Y) and ground.
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair or replace harness between "memory switch and
lumber support switch" and ground.
Memory Indicator Lamp Circuit CheckAIS002Y7
1. CHECK FUNCTION
With CONSULT-II
With “MEMORY SW INDCTR” in ACTIVE TEST, check operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Memory indicator lamp circuit is OK.
NG >> GO TO 2.
2. CHECK "MEMORY SWITCH AND LUMBER SUPPORT SWITCH" POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect "memory switch and lumber support switch" connector.
3. Check voltage between "memory switch and lumber support
switch" connector B158 terminal 11 (R/W) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between fuse block (J/B) and memory switch and lumber support
switch. 61 (B/Y) – Ground : Continuity should exist.
PIIA6706E
Test item Description
MEMORY SW
INDCTRThe memory switch indicator is lit by receiving the drive signal.
PIIA0319E
11 (R/W) – Ground : Battery voltage
PIIA6705E

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3. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector.
2. Check continuity between driver seat control unit connector
B152 terminals 23 (Y/W), 36 (Y/G) and "memory switch and
lumber support switch" connector D3 terminals 23 (Y/W), 36 (Y/
G).
3. Check continuity between driver seat control unit connector
B152 terminals 23 (Y/W), 36 (Y/G) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between automatic drive positioned control unit and "memory switch
and lumber support switch".
4. CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
Check voltage between driver seat control unit connector B152 ter-
minals 23 (Y/W), 36 (Y/G) and ground.
OK or NG
OK >> Memory indicator lamp circuit is OK.
NG >> Replace "memory switch and lumber support switch".
Uart Communication Line Circuit CheckAIS002Y8
1. CHECK UART LINE HERNESS
1. Disconnect driver seat control unit connector and automatic
drive positioner control unit connector.
2. Check continuity between driver seat control unit connector
B152 terminal 2 (P), 8 (G/Y) and automatic drive positioner con-
nector M49 terminal 10 (B), 26 (G).
3. Check continuity between driver seat control unit connector
B152 terminal 2 (P), 8 (G/Y) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between driver seat control unit and automatic drive positioner.23 (Y/W) – 23 (Y/W) : Continuity should exist.
36 (Y/G) – 36 (Y/G) : Continuity should exist.
23 (Y/W) – Ground : Continuity should not exist.
36 (Y/G) – Ground : Continuity should not exist.
PIIA5077E
23 (Y/W) – Ground : Battery voltage
36 (Y/G) – Ground : Battery voltage
PIIA5078E
2 (P) − 26 (W) : Continuity should exist.
8 (G/Y) − 10 (R) : Continuity should exist.
2 (P) − Ground : Continuity should not exist.
8 (G/Y) − Ground : Continuity should not exist.
PIIA5099E

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Revision: 2004 November 2004 FX35/FX45
2. CHECK UART LINE SIGNAL 1
1. Turn ignition switch ON.
2. Check signal between driver seat control unit connector ground,
with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the flowing.

When voltage waveform dose not appear with a constant voltage (approx. 5V), replace driver
seat control unit.

When voltage waveform dose not appear with a constant voltage (approx. 0V), replace auto-
matic drive positioner control unit.
3. CHECK UART LINE SIGNAL 2
Check signal between automatic driver positioner control unit con-
nector ground, with oscilloscope.
OK or NG
OK >> GO TO 4.
NG >> Check the flowing.

When voltage waveform dose not appear with a constant voltage (approx. 5V), replace auto-
matic driver seat control unit.

When voltage waveform dose not appear with a constant voltage (approx. 0V), replace driver
seat control unit.
4. CHECK DRIVER SEAT CONTROL UNIT
Dose the automatic drive positioner operate, when the driver control unit exchanged?
Does seat memory function operate?
YES >> Replace automatic drive positioner control unit.
NG >> Replace driver seat control unit.
ConnectorTe r m i n a l s
(Wire color)
Condition Signal
(+) (–)
B152 2 (P) GroundSeat
memory
switch 1 or
2 opera-
tion
PIIA5097E
PIIA4814E
ConnectorTe r m i n a l s
(Wire color)
Condition Signal
(+) (–)
M49 10 (R) GroundSeat
memory
switch 1 or
2 opera-
tion
PIIA5098E
PIIA4813E

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Lumber Support Circuit CheckAIS003C1
1. CHECK LUMBER SUPPORT SWITCH
1. Turn ignition switch OFF.
2. Disconnect l"memory switch and lumber support switch" con-
nector.
3. Check voltage between l"memory switch and lumber support
switch" connector B158 terminal 1 (R) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between fuse block (J/B) and l"memory switch and lumber support
switch".
2. CHECK LUMBER SUPPORT SWITCH
Check continuity power seat switch.
OK or NG
OK >> GO TO 3.
NG >> Replace power seat switch.
3. CHECK LUMBER SUPPORT MOTOR HARNESS
1. Disconnect lumber support motor connector.
2. Check continuity between l"memory switch and lumber support
switch" connector B158 terminal 31 (W), 32 (L) and lumber sup-
port motor connector B195 terminal 31 (W), 32 (L).
3. Check continuity between l"memory switch and lumber support
switch" connector B159 terminal 31 (W), 32 (L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between l"memory switch and lumber support switch" and lumber sup-
port motor. 1 (R) – Ground: : Battery voltage
PIIA6707E
Terminal Condition Continuity
311 Lumber support switch turned to backward. Yes
16B Lumber support switch turned to forward. No
321 Lumber support switch turned to forward. Yes
16B Lumber support switch turned to backward. No
PIIA6709E
31 (W) − 31 (W) : Continuity should exist.
32 (L) − 32 (L) : Continuity should exist.
31 (W) − Ground : Continuity should not exist.
32 (L) − Ground : Continuity should not exist.
PIIA6710E