engine control INFINITI FX35 2007 Service Manual

PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 July 2007 FX35/FX45
All Signals, Main Signals, Selection From Menu
NOTE:

Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the display may not be cor -
rect.

*1: The vehicle without the Intelligent Key system displays only ON without change.

*2:The cornering lamp item is displayed, but it cannot be monitored.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch item to be tested.
3. Touch “START”, and confirm its operation.
4. Touch “OFF” while testing to stop the operation.
Item name CONSULT-II
screen display Display or unit SELECT MONITOR ITEM
Description
ALL
SIG-
NALS MAIN
SIG-
NALS SELECTION
FROM
MENU
Motor fan request MOTOR FAN REQ 1/2/3/4 ×× ×Signal status input from ECM
Compressor request AC COMP REQ ON/OFF ×× ×Signal status input from ECM
Tail & clear request TAIL&CLR REQ ON/OFF ×× ×Signal status input from BCM
H/L LO request HL LO REQ ON/OFF ×× ×Signal status input from BCM
H/L HI request HL HI REQ ON/OFF ×× ×Signal status input from BCM
FR fog request FR FOG REQ ON/OFF ×× ×Signal status input from BCM
FR wiper request FR WIP REQ STOP/LO/HI ×× ×Signal status input from BCM
Wiper auto stop WIP AUTO STOP ACT P/STOP P ×× ×Output status of IPDM E/R
Wiper protection WIP PROT OFF/BLOCK ×× ×Control status of IPDM E/R
Starter request ST RLY REQ
*1ON/OFF ×× Status of input signal
Ignition relay status IGN RLY ON/OFF ×× × Ignition relay status monitored
with IPDM E/R
Rear window defog-
ger request RR DEF REQ ON/OFF
×× ×Signal status input from BCM
Oil pressure switch OIL P SW OPEN/CLOSE ××Signal status input in IPDM E/R
Hood switch HOOD SW ON/OFF ××Input signal status
Theft warning horn
request THFT HRN REQ ON/OFF
××Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF ××Output status of IPDM E/R
Cornering lamp
request CRNRNG LMP
REQ
*2OFF/LEFT/
RIGHT ××
Signal status input from BCM
Test item CONSULT-II screen display Description
Tail lamp operation TAIL LAMP With a certain ON-OFF operation, the tail lamp relay can be operated.
Rear window defogger opera-
tion REAR DEFOGGER
With a certain ON-OFF operation, the rear window defogger relay can
be operated.
Front wiper (HI, LO) opera-
tion FRONT WIPER With a certain operation (OFF, HI ON, LO ON), the front wiper relay
(Lo, Hi) can be operated.
Cooling fan operation MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.
Lamp (HI, LO, FOG) opera-
tion LAMPSWith a certain operation (OFF, HI ON, LO ON, FOG ON), the lamp
relay (Lo, Hi, Fog) can be operated.
Cornering lamp operation CORNERING LAMP
NOTE—
Horn operation HORN With a certain ON-OFF operation, the horn relay can be operated.

PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 July 2007 FX35/FX45
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following eight steps are repeated three times.
NOTE:
Turns ON-OFF the solenoid to switch Hi/Lo. In this case, the bulb does not illuminate.
Concept of Auto Active Test

IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.

If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.
Diagnosis chart in auto active test mode
PKIB6583E
Symptom Inspection contents Possible cause
Any of front wipers, tail
and parking lamps, front
fog lamps, and head
lamps (Hi, Lo) do not
operate. Perform auto active
test. Does system in
question operate? YES

BCM signal input system malfunction
NO

Lamp/wiper motor malfunction

Lamp/wiper motor ground circuit malfunction

Harness/connector malfunction between IPDM E/R and system in ques-
tion

IPDM E/R (integrated relay) malfunction
Rear window defogger
does not operate. Perform auto active
test. Does rear win-
dow defogger oper-
ate? YES

BCM signal input circuit malfunction
NO

Rear window defogger relay malfunction

Harness/connector malfunction between IPDM E/R and rear window
defogger relay.

Open circuit of rear window defogger

IPDM E/R malfunction
A/C compressor does
not operate. Perform auto active
test. Does magnetic
clutch operate? YES

BCM signal input circuit malfunction

CAN communication signal between BCM and ECM.

CAN communication signal between ECM and IPDM E/R
NO

Magnetic clutch malfunction

Harness/connector malfunction between IPDM E/R and magnetic clutch

IPDM E/R (integrated relay) malfunction
Cooling fan does not
operate. Perform auto active
test. Does cooling
fan operate? YES

ECM signal input circuit

CAN communication signal between ECM and IPDM E/R
NO

Cooling fan motor malfunction

Harness/connector malfunction between IPDM E/R and cooling fan motor

IPDM E/R (integrated relay) malfunction

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) PG-27
C
D E
F
G H
I
J
L
M A
B
PG
Revision: 2006 July 2007 FX35/FX45
Inspection With CONSULT-II (Self-Diagnosis)NKS003GK
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. CHECK SELF DIAGNOSTIC RESULT
1. Connect CONSULT-II and select “IPDM E/R” on the “SELECT SYSTEM” screen.
2. Select “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.
3. Check display content in self diagnostic results.
NOTE:
The details for display of the period are as follows:

CRNT: Error currently detected with IPDM E/R.

PAST: Error detected in the past and memorized with IPDM E/R.
Contents displayed
NO DTC IS DETECTED.FURTHER TESTING MAY BE REQUIRED.>> INSPECTION END
CAN COMM CIRCUIT>> Refer to LAN-49, "
CAN System Specification Chart" .
CONSULT-II display CONSULT-II
display code TIME
Details of diagnosis result
CRNT PAST
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED. — — — No malfunction
CAN COMM CIRCUIT U1000 ×× Any of or several items below have errors.

TRANSMIT DIAG

ECM

BCM/SEC

GROUND PG-37
C
D E
F
G H
I
J
L
M A
B
PG
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL HARNESS/VK ENGINE MODELS
CKIM0408E

PG-38
GROUND
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL HARNESS/VQ ENGINE MODELS
CKIM0409E

HARNESS PG-43
C
D E
F
G H
I
J
L
M A
B
PG
Revision: 2006 July 2007 FX35/FX45
HARNESS PFP:00011
Harness Layout NKS003GN
HOW TO READ HARNESS LAYOUT
The following Harness Layouts use a map style grid to help locate
connectors on the figures:

Main Harness

Engine Room Harness (Engine Compartment)

Engine Control Harness

Body Harness
To Use the Grid Reference
1. Find the desired connector number on the connector list.
2. Find the grid reference.
3. On the figure, find the crossing of the grid reference letter column and number row.
4. Find the connector number in the crossing zone.
5. Follow the line (if used) to the connector.
CONNECTOR SYMBOL
Main symbols of connector (in Harness Layout) are indicated in the below.
SEL252V
CKIT0108E

HARNESS PG-53
C
D E
F
G H
I
J
L
M A
B
PG
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL HARNESS/VK ENGINE MODELS
TKIM0630E

HARNESS PG-55
C
D E
F
G H
I
J
L
M A
B
PG
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL HARNESS/VQ ENGINE MODELS
TKIM0632E

PG-64
HARNESS
Revision: 2006 July 2007 FX35/FX45
Wiring Diagram Codes (Cell Codes) NKS003GO
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
A/C ATC Air Conditioner
AF1B1 EC Air Fuel Ratio Sensor 1 Bank 1
AF1B2 EC Air Fuel Ratio Sensor 1 Bank 2
AF1HB1 EC Air Fuel Ratio Sensor 1 Heater Bank 1
AF1HB2 EC Air Fuel Ratio Sensor 1 Heater Bank 2
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Automatic Light System
AWD TF AWD Control System
B/CLOS BL Back Door Closure System
BACK/L LT Back-Up Lamp
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CLOCK DI Clock
COMBSW LT Combination Switch
COMM AV Audio Visual Communication Line
COMPAS DI Compass
COOL/F EC Cooling Fan Control
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
ETC1 EC Electric Throttle Control Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTS AT A/T Fluid Temperature Sensor Circuit

SC-24
CHARGING SYSTEM
Revision: 2006 July 2007 FX35/FX45
CHARGING SYSTEMPFP:23100
System DescriptionNKS002UV
The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times

through 10A fuse (No. 33, located in the fuse and fusible link block)

to alternator terminal 4 (“S” terminal).
“B” Terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage
is controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The charging circuit is protected by the 120A fusible link (VK45DE and VQ35DE AWD).
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 7 for the charge warning lamp.
Ground is supplied

to combination meter terminal 2

through alternator terminal 3 (“L” terminal)

to alternator terminal 2 (“E” terminal) (VK45DE) or through case ground (VQ35DE)

through ground E304 (VK45DE).
With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing suf-
ficient voltage with the engine running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a malfunction is indicated.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate charge warning lamp, if any of the following symp-
toms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.