2006 INFINITI M35 air condition

BL-12
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

POWER DOOR LOCK SYSTEM
BL-31
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2006 January2006 M35/M45
Terminals and Reference Value of BCMNIS001WV
Work FlowNIS001WW
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-25, "
System Description" .
3. According to the trouble diagnosis chart by symptom, repair or replace the cause of the malfunction.
Refer to BL-34, "
Trouble Diagnosis Chart by Symptom" .
4. Does power door lock system operate normally?
YES: GO TO 5.
NO: GO TO 3.
5. INSPECTION END
Termi-
nalWire
colorItem ConditionVoltage [V]
(Approx.)
11 V Ignition switch (ACC) Ignition switch is in ACC position Battery voltage
22 G Power window serial link Ignition switch ON
38 W Ignition switch (ON)Ignition switch is in ON or START posi-
tionBattery voltage
39 L CAN H — —
40 P CAN L — —
42 P Battery source (Fuse) — Battery voltage
44 GRDriver door lock actuator
(unlock) signalDoor lock / unlock switch
(Free
Unlock)0 Battery voltage 0
50 V Door lock actuator (lock) signalDoor lock / unlock switch
(Free
Lock)0 Battery voltage 0
51 GRear doors lock actuator and
fuel lid lock actuator (unlock) sig-
nalDoor lock / unlock switch
(Free
Unlock)0 Battery voltage 0
52 B Ground — 0
55 W Power source (Fusible link) — Battery voltage
70 GFront door lock actuator (pas-
senger side) lock signalDoor lock / unlock switch
(Free
Unlock)0 Battery voltage 0
PIIA2344J

POWER DOOR LOCK SYSTEM
BL-35
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2006 January2006 M35/M45
Power Supply and Ground Circuit Check of BCMNIS001WZ
1. CHECK FUSE
Check the following fuse and fusible link.
50A fusible link (letter F , located in the fuse and fusible link box)
10A fuse [No.21, located in the fuse block (J/B)]
10A fuse [No.6, located in the fuse block (J/B)]
15A fuse [No.1, located in the fuse block (J/B)]
NOTE:
Refer to BL-24, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace BCM power supply circuit.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace BCM ground circuit.
Terminals Condition
of ignition
switch
positionVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M311
GroundACC
Battery voltage 38 ON
M442
OFF
55
PIIB6296E
BCM connector Terminal Continuity
M2 52 Ground Yes
PIIB5935E

BL-38
POWER DOOR LOCK SYSTEM
Revision: 2006 January2006 M35/M45
Check Door Lock Actuator/Driver SideNIS001X1
1. CHECK OUTPUT SIGNAL
Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM.
2. CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock actuator driver side connector.
3. Check continuity between BCM connector and front door lock
actuator driver side connector.
4. Check continuity between BCM connector and ground.
OK or NG
OK >> Replace front door lock actuator (driver side).
NG >> Repair or replace harness.
Terminals
Condition of
door lock and
unlock switchVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M250
GroundLock 0
Battery voltage 0
44 Unlock 0
Battery voltage 0
PIIB6060E
AB
Continuity
BCM connector TerminalDoor lock actu-
ator connectorTerminal
M250
D142
Ye s
44 1
A
Continuity
BCM connector Terminal
M250
Ground No
44
PIIB6061E

POWER DOOR LOCK SYSTEM
BL-39
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2006 January2006 M35/M45
Check Door Lock Actuator/Passenger SideNIS001X2
1. CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM.
2. CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM and front door lock actuator passenger side connectors.
2. Check continuity between BCM connector and front door lock
actuator passenger side.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> Replace front door lock actuator (passenger side).
NG >> Repair or replace harness.
Terminals
Condition of
door lock and
unlock switchVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M2 50
GroundLock 0
Battery voltage 0
M3 70 Unlock 0
Battery voltage 0
PIIB6062E
AB
Continuity
BCM connector TerminalDoor lock actu-
ator connectorTe r m i n a l
M2 50
D442
Ye s
M3 70 1
A
Continuity
BCM connector Terminal
M2 50
Ground No
M3 70
PIIB6063E

BL-40
POWER DOOR LOCK SYSTEM
Revision: 2006 January2006 M35/M45
Check Door Lock Actuator/Rear LHNIS001X3
1. CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM.
2. CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM and rear door lock actuator LH connectors.
2. Check continuity between BCM connector and rear door lock
actuator LH connectors.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> Replace door lock actuator/rear LH.
NG >> Repair or replace harness.
Check Door Lock Actuator/Rear RHNIS001X4
1. CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM.
Terminals
Condition of
door lock and
unlock switchVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M250
GroundLock 0
Battery voltage 0
51 Unlock 0
Battery voltage 0
PIIB6064E
AB
Continuity
BCM connector TerminalDoor lock actu-
ator connectorTerminal
M250
D592
Ye s
51 1
A
Continuity
BCM connector Terminal
M250
Ground No
51
PIIB6383E
Terminals
Condition of
door lock and
unlock switchVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M250
GroundLock 0
Battery voltage 0
51 Unlock 0
Battery voltage 0
PIIB6064E

BL-42
POWER DOOR LOCK SYSTEM
Revision: 2006 January2006 M35/M45
Door Key Cylinder Switch CheckNIS001X6
1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
With CONSULT-II
Check (“KEY CYL LK-SW”, “KEY CYL UN-SW”) in “DATA MONITOR” mode for “POWER DOOR ROCK SYS-
TEM” with CONSULT-II.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between power window main switch connector and ground.
OK or NG
OK >> Key cylinder switch circuit is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Disconnect power window main switch and front door key lock assembly (driver side) connector.
2. Check continuity between power window main switch connector and front door lock assembly (driver side)
connector.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Monitor item Condition
KEY CYL LK-SWLock : ON
Neutral / Unlock : OFF
KEY CYL UN-SWUnlock : ON
Neutral / Lock : OFF
PIIA6285E
Te r m i n a l s
Key positionVoltage (V)
(Approx.) (+)
(–) Power window
main switch
connectorTerminal
D104
GroundLock 0
Neutral / Unlock 5
6Unlock 0
Neutral / Lock 5
PIIB5956E
AB
Continuity Power window
main switch
connectorTe r m i n a lFront door lock
assembly
(driver side)
connectorTerminal
D104
D146
Ye s
65
PIIB5973E

BL-82
INTELLIGENT KEY SYSTEM
Revision: 2006 January2006 M35/M45
CAUTION:
When CAN COMM 1 [U1000] and CAN COMM 2 [U1010] are displayed, give priority to performing trouble diagnosis.
DATA MONITOR
INTELLIGENT KEY
[B2552]Internal malfunction is detected in Intelligent Key unitReplace Intelligent Key
unit.BL-163
IGN POWER CIRCUIT
[B2553]It continues for 2 seconds or more that ON power sup-
ply input to Intelligent Key unit is excessively low when
the power supply position is in ON positionCheck Intelligent Key
unit ON power supply
inputBL-163
ACC POWER CIRCUIT
[B2554]It continues for 2 seconds or more that ACC power
supply input to Intelligent Key unit is excessively low
when the power supply position is in ACC or ON posi-
tionCheck Intelligent Key
unit ACC power supply
inputBL-164
STOP LAMP CIRCUIT
[B2555]5V or less is detected at both the stop lamp switch sig-
nal input circuit that is input to Intelligent Key unit and
the monitor input before stop lamp switchCheck stop lamp switchBL-167
ENG START SW
[B2556]Condition that push-button ignition switch is pushed is
detected continuously for 100 seconds or moreCheck push-button igni-
tion switchBL-168
VEHICLE SPEED
[B2557]Some differences occur on one or more vehicle speed
inputs of Intelligent Key unitCheck vehicle speed sig-
nalBL-169
SHIFT POSITION
[B2558]
There is a difference between the shift position input
via CAN communication and the P position input by
detent switch
Vehicle speed (5 km/h or more) is detected continu-
ously for 10 seconds or more even if the shift posi-
tion is detected in P position when the power supply
position is in ON positionCheck shift position inputBL-172
PDU
[B2559]Internal malfunction is detected in PDU Replace PDUBL-174
START POW SUP CIRC
[B2560]Though the engine start operation is not performed,
starter relay in IPDM E/R is ONCheck starter power sup-
plyBL-174
LOW VOLTAGE
[B2562]Battery power supply input to Intelligent Key unit (8.8V
or less) is detected continuously for 1.5 seconds or
moreCheck battery low volt-
ageBL-177
HI VOLTAGE
[B2563]Battery power supply input to Intelligent Key unit (18V
or more) is detected continuously for 90 seconds or
moreCheck for battery high
voltageBL-178
NATS MALFUNCTION
[B2590]Malfunction is detected in immobilizer systemCheck (IVIS) NATS trou-
ble diagnosis procedureBL-248
Suspect Systems
[DTC]Diagnostic item is detected when... Repair work Reference page
Monitor item Content
DR REQ SW Indicates [ON/OFF] condition of door request switch (driver side).
AS REQ SW Indicates [ON/OFF] condition of door request switch (passenger side).
BD/TR REQ SW Indicates [ON/OFF] condition of trunk opener request switch.
ON POS Indicates [ON/OFF] condition of ignition switch in ON position.
ACC POS Indicates [ON/OFF] condition of ignition switch in ACC position.
DOOR STAT SW Indicates [ON/OFF] condition of door unlock sensor.
STOP LAMP SW Indicates [ON/OFF] condition of stop lamp switch.
P RANGE SW Indicates [ON/OFF] condition of park position switch.
TR CANCEL SW* Indicates [ON/OFF] condition of trunk cancel switch.
DOOR LOCK SIG* Indicates [ON/OFF] condition of door lock signal from Intelligent Key remote controller button.
DOOR UNLOCK SIG* Indicates [ON/OFF] condition of door unlock signal from Intelligent Key remote controller button.
KEYLESS TRUNK* Indicates [ON/OFF] condition of trunk open signal from Intelligent Key remote controller button.