ground INFINITI FX35 2004 Service Manual

INTELLIGENT KEY SYSTEM
BL-139
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
3. INSIDE KEY ANTENNA INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room)
terminals 1, 2 and Intelligent Key unit connector terminals 13, 14, 15, 16, 35 and 36.
3. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room)
terminals 1 and 2 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Repair or replace harness between inside key antenna and Intelligent Key unit.
Check Steering Lock UnitAIS004NL
1. STEERING LOCK UNIT POWER SUPPLY INSPECTION
1. Turn ignition knob LOCK position.
2. Disconnect steering lock unit connector.
3. Check voltage between steering lock unit connector M26 terminal 1 (L/R) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace steering lock unit power supply circuit.Inside key
antenna-3 (Lug-
gage room)1 (OR/L) - 13 (Y): Continuity should exist.
2 (W/L) - 14 (BR): Continuity should exist.
Inside key
antenna-1 (Dash
board)1 (W/R) - 15 (W/R): Continuity should exist.
2 (B/R) - 16 (B/R): Continuity should exist.
Inside key
antenna-2 (Dash
board)1 (LG) - 35 (LG): Continuity should exist.
2 (PU) - 36 (PU): Continuity should exist.
Inside key
antenna-3 (Lug-
gage room)1 (OR/L) - Ground: Continuity should not exist.
2 (W/L) - Ground: Continuity should not exist.
Inside key
antenna-1 (Dash
board)1 (W/R) - Ground: Continuity should not exist.
2 (B/R) - Ground: Continuity should not exist.
Inside key
antenna-2 (Dash
board)1 (LG) - Ground: Continuity should not exist.
2 (PU) - Ground: Continuity should not exist.
PIIA6755E
1 (L/R) - Ground : Battery voltage
PIIA6797E

BL-140
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. STEERING LOCK UNIT GROUND CIRCUIT INSPECTION
Check continuity between steering lock unit connector M26 terminal 4 (Y/B) and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. STEERING LOCK COMMUNICATION CIRCUIT INSPECTION
1. Connect steering lock unit connector.
2. Check voltage between Intelligent Key unit connector M34 terminal 1 (R/W) and ground.
3. Immediately after pushing ignition knob, use an oscilloscope to check voltage waveform between Intelli-
gent Key unit connector M34 terminal 32 (R/B) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace Intelligent Key unit.4 (Y/B) - Ground : Continuity should exist.
PIIA6798E
1 (R/W) - Ground : Approx. 5V
MIIB0385E
Immediately after ignition knob pushing.
32 (R/B) - Ground
MIIB0386E
SIIA1911J

INTELLIGENT KEY SYSTEM
BL-141
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
4. STEERING LOCK UNIT COMMUNICATION CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit and steering lock unit connectors.
2. Check continuity between Intelligent Key unit connector M34 terminals 1, 31, 32 and steering lock unit
connector M26 terminals 2, 3, 4.
3. Check continuity between steering lock unit connector M26 ter-
minals 2, 3, 4 and ground.
OK or NG
OK >> Replace steering lock unit.

After replacing steering lock unit, perform registration procedure. Refer to “CONSULT-II Opera-
tion Manual NATS-IVIS/NVIS”.
NG >> Repair or replace harness between steering lock unit and Intelligent Key unit.
Check Stop Lamp SwitchAIS004NM
1. STOP LAMP SWITCH POWER SUPPLY CIRCUIT INSPECTION
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. STOP LAMP SWITCH OPERATION INSPECTION
Check continuity between stop lamp switch connector E210 terminal
1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace stop lamp switch.1 (R/W) - 2 (R/W) : Continuity should exist.
31 (Y/B) - 4 (Y/B) : Continuity should exist.
32 (R/B) - 3 (R/B) : Continuity should exist.
2 (R/W) - Ground : Continuity should not exist.
3 (R/B) - Ground : Continuity should not exist.
4 (Y/B) - Ground : Continuity should not exist.
PIIA6799E
1 (GY) - Ground : Battery voltage
PIIA6811E
1 - 2
Brake pedal depressed : Continuity should exist.
Brake pedal not
depressed: Continuity should not exist.
PIIA6800E

BL-142
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
3. STOP LAMP SWITCH GROUND CIRCUIT INSPECTION
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 Detention SwitchAIS004NN
1. DETENTION SWITCH INPUT SIGNAL INSPECTION
1. Turn ignition knob LOCK position.
2. Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.2 (P) - 26 (P/L) : Continuity should exist.
2 (P) - Ground : Continuity should not exist.
PIIA6801E
ConnectorTerminal
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 39 (R/Y) GroundWhen selector lever is locked
at the “P” position0
When selector lever is not
locked at the “P” positionBattery voltage
PIIA6805E

INTELLIGENT KEY SYSTEM
BL-143
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
2. DETENTION SWITCH CIRCUIT INSPECTION
1. Disconnect A/T device (detention switch) connector.
2. Check voltage between A/T device (detention switch) connector
M67 terminal 3 (R/Y) and ground. (Check harness for open.)
3. Check continuity between A/T device (detention switch) connec-
tor M67 terminals 3 (R/Y) and ground. (Check harness for
short.)
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. DETENTION SWITCH INSPECTION
Check continuity between A/T device (detention switch) terminals 2 and 3.
OK or NG
OK >> GO TO 4.
NG >> Replace back A/T device (detention switch).3 (R/Y) – Ground : Battery voltage
PIIA6806E
3 (R/Y) – Ground : Continuity should not exist.
PIIA6807E
Terminal Condition Continuity
2 – 3When selector lever is not
locked at the “P” positionNo
When selector lever is
locked at the “P” positionYe s
PIIA6808E

BL-144
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
4. DETENTION SWITCH GROUND CIRCUIT INSPECTION
Check continuity between A/T device (detention switch) connector
M67 terminal 2 (B) and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Select Unlock RelayAIS004NO
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.2 (B) – Ground : Continuity should exist.
PIIA6809E
1 (L/R) – Ground : Approx. 12V
PIIA6954E
2 (BR/W) – 40 (BR/W) : Continuity should exist.
2 (BR/W) – Ground : Continuity should not exist.
PIIA6955E

INTELLIGENT KEY SYSTEM
BL-145
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
Check Hazard FunctionAIS004NP
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- 8 9 , "
TURN SIGNAL AND HAZARD WARNING LAMPS" .
Check Horn FunctionAIS004NQ
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagnosis of
malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-14, "
CAN Communication
Inspection Using CONSULT-II (Self-Diagnosis)" .
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-56, "
HORN" .
Check Headlamp FunctionAIS004NR
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagnosis of
malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-14, "
CAN Communication
Inspection Using CONSULT-II (Self-Diagnosis)" .
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- 7 , "
HEADLAMP - XENON TYPE -" .
Check IPDM E/R OperationAIS004NS
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 2.51 (SB) – Ground : Battery voltage
PIIA6403E

BACK DOOR AUTO CLOSURE SYSTEM
BL-169
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Back Door Closure Control UnitAIS004OG
*, (): Models with Intelligent KeyTe r m i -
nalWire
colorItem ConditionVoltage (V)
(Approx.)
1 R Battery power supply — Battery voltage
2 PU Closure motor (open) signal Fully close → fully open
3 G Closure motor (close) signal Fully open → fully close
4 B Ground — 0
5W
(B)Ground* — 0*
Unlock sensor signal
(passenger side)Passenger side door lock is locked 5
Passenger side door lock is unlocked 0
6Y
(LG)Back door opener switch signalBack door opener switch is ON 0
Other than above 5
7 OR Half-latch switch signal Fully open → fully close
8 L Close switch signal Fully open → fully close
9 P Open switch signal Fully open → fully close
SIIA1480J
SIIA1480J
SIIA1479J
SIIA1478J
SIIA1481J

BL-170
BACK DOOR AUTO CLOSURE SYSTEM
Revision: 2004 November 2004 FX35/FX45
Work FlowAIS004OH
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-165, "
System Description" .
3. Perform the preliminary check, Refer to BL-170, "
Preliminary Check"
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-170,
"Trouble Diagnosis Chart by Symptom" .
5. Does back door auto closure system operate normally? If Yes, GO TO 6, If No, GO TO 4.
6. INSPECTION END
Preliminary CheckAIS004OI
Remove the fuse No.18 for the back door closure with the back door closure inactive.
Check that the back door can be open / close normally.
CAUTION:
It is judged it is abnormal, discontinues 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 continuously three times, both back door closure and back door opener
switch are not operated because the function of back door closure is stopped.
Thing to reset power supply by pulling out and opening fuse in that case.
Trouble Diagnosis Chart by SymptomAIS004OJ
Symptom Diagnostic procedure and repair order Refer to page
Back door closure does not operate.1.Back door closure motor power supply and ground
circuit check BL-171
2. Half-latch switch checkBL-171
3. Close switch checkBL-173
4. Open switch check.BL-174
5. Closure motor check.BL-180
6. Replace back door closure control unit.BL-180
Back door does not open (with Intelligent Key system).1. Intelligent Key system check.BL-1132. Back door opener switch check.BL-175
Back door does not open1. Back door opener switch check.BL-1772. Unlock sensor check.BL-179
3. Replace back door closure control unit.BL-180
Back door does not enter fully closed states through
back door closure operates.1.Back door fitting adjustment.BL-159
2. Replace back door lock assembly.BL-163

BACK DOOR AUTO CLOSURE SYSTEM
BL-171
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
Back Door Closure Control Unit Power Supply and Ground Circuit CheckAIS004OK
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 closure
control unit and fuse.
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.
Half-Latch Switch CheckAIS004OL
1. CHECK HALF-LATCH 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 >> Half-latch switch is OK.
NG >> GO TO 2.1 (R) – Ground : Battery voltage
PIIA6166E
4 (B) – Ground : Continuity should exist.
PIIA6167E
Con-
nectorTerminals (Wire color)
Back door
conditionSignal
(Reference value)
(+) (-)
D106 7 (OR) GroundFully open →
fully closed
PIIA6168E
SIIA1479J