control INFINITI M35 2007 Factory Service Manual

SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Parking Drum Brake NFS000SX
Parking Brake ControlNFS000SY
Brake liningStandard thickness 3.2 mm (0.126 in)
Repair limit thickness 1.5 mm (0.059 in)
Drum (disc)Standard inner diameter 172 mm (6.77 in) dia.
Maximum inner diameter 173 mm (6.81 in) dia.
Control typeFoot pedal
Number of notches [under force of 196 N (20 kg, 44 lb)] 3 − 4 notches
Number of notches when parking brake warning lamp comes on 1 notch

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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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Revision: 2007 April2007 M35/M45
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING CIRCUIT ...................... 3
Schematic ................................................................ 3
Wiring Diagram — POWER — ................................. 5
BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 5
ACCESSORY POWER SUPPLY — IGNITION
SW. IN “ACC” OR “ON” ........................................ 11
IGNITION POWER SUPPLY — IGNITION SW.
IN “ON” AND/OR “START” .................................. 12
Fuse ....................................................................... 17
Fusible Link ............................................................ 17
Circuit Breaker ....................................................... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ...................................... 18
System Description ................................................ 18
SYSTEMS CONTROLLED BY IPDM E/R ........... 18
CAN COMMUNICATION LINE CONTROL ......... 18
IPDM E/R STATUS CONTROL ........................... 19
CAN Communication System Description .............. 19
CAN Communication Unit ...................................... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function (IPDM E/R) ......................... 20
CONSULT-II BASIC OPERATION ....................... 20
SELF-DIAG RESULTS ........................................ 20
DATA MONITOR ................................................. 21
CAN DIAG SUPPORT MNTR ............................. 22
ACTIVE TEST ..................................................... 22
Auto Active Test ..................................................... 23
DESCRIPTION .................................................... 23
OPERATION PROCEDURE ............................... 23
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic .............................................................. 27
IPDM E/R Terminal Arrangement ........................... 28
Check IPDM E/R Power Supply and Ground Circuit ... 29
Inspection with CONSULT-II (Self-Diagnosis) ........ 30
Removal and Installation of IPDM E/R ................... 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
PDU (POWER DISTRIBUTION UNIT) ...................... 32
Component Parts and Harness Connector Location ... 32System Description ................................................. 32
PUSH-BUTTON IGNITION SWITCH OPERAT-
ING PROCEDURE .............................................. 32
Wiring Diagram — PDU — ..................................... 34
Terminals and Reference Value for Intelligent Key
Unit ......................................................................... 36
Terminals and Reference Value for PDU ................ 37
Work Flow ............................................................... 37
Trouble Diagnosis Symptom Chart ......................... 38
Check CAN Communication System ...................... 38
Check PDU Power Supply and Ground Circuit ...... 39
Check Push-Button Ignition Switch (Ignition Switch)
System .................................................................... 39
Check Push-Button Ignition Switch (Indicator Cir-
cuit) System ............................................................ 41
PDU Communication Circuit System 1 ................... 42
PDU Communication Circuit System 2 ................... 43
Removal and Installation of PDU ............................ 44
REMOVAL ........................................................... 44
INSTALLATION ................................................... 44
GROUND ................................................................... 45
Ground Distribution ................................................. 45
MAIN HARNESS ................................................. 45
ENGINE ROOM HARNESS ................................ 50
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 54
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 55
BODY HARNESS ................................................ 56
BODY NO. 2 HARNESS ..................................... 60
HARNESS ................................................................. 62
Harness Layout ...................................................... 62
HOW TO READ HARNESS LAYOUT ................. 62
OUTLINE ............................................................. 63
MAIN HARNESS ................................................. 64
NAVIGATION SUB-HARNESS & A/C HARNESS ... 69
ENGINE ROOM HARNESS ................................ 70
ENGINE CONTROL HARNESS (VQ ENGINE) ... 77
ENGINE CONTROL HARNESS (VK ENGINE) ... 80
BODY HARNESS ................................................ 83

POWER SUPPLY ROUTING CIRCUIT
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Revision: 2007 April2007 M35/M45
Fuse NKS004DZ

If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.

Use fuse of specified rating. Never use fuse of more than speci-
fied rating.

Do not partially install fuse; always insert it into fuse holder prop-
erly.

Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not
used for a long period of time.
Fusible Link NKS004E0
A melted fusible link can be detected either by visual inspection or by
feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:

If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of mal-
function.

Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts.
Circuit Breaker NKS004E1
The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.
CEL083
CKIT0163E
SEL109W

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionNKS004E2

IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relay via IPDM E/R control cir-
cuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control and
oil pressure switch signal reception, etc.

It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication, it receives signal from BCM and controls the following lamps:

Headlamps (HI, LO)

Tail, parking and license plate lamps

Front fog lamps
2. Daytime light relay control (for Canada models)
Using CAN communication, it receives signals from BCM and controls the daytime light relay.
3. Wiper control
Using CAN communication, it receives signals from BCM and controls the front wipers.
4. Rear window defogger relay control
Using CAN communication, it receives signals from BCM and controls the rear window defogger relay.
5. A/C compressor control
Using CAN communication, it receives signals from ECM and controls the A/C relay.
6. Cooling fan control
Using CAN communication, it receives signals from ECM and controls cooling fan via cooling fan control
module.
7. Horn control
Using CAN communication, it receives signals from BCM and controls horn relay.
8. Starter motor relay control
Using CAN communication, it receives signals from BCM and controls starter motor relay.
9. Alternator control
Using CAN communication, it receives signal from ECM and controls power generation voltage.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamps

With the ignition switch ON, the headlamp low relay is ON.

With the ignition switch OFF, the headlamp low relay is OFF.
Tail, parking and
license plate lamps

With the ignition switch ON, the tail lamp relay is ON.

With the ignition switch OFF, the tail lamp relay is OFF.
Cooling fan

With the ignition switch ON, the cooling fan HI operates.

With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just
before fail−safe control was initiated.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1. CAN communication status

CAN communication is normally performed with other control units.

Individual unit control by IPDM E/R is normally performed.

When sleep request signal is received from BCM, mode is switched to sleep transient status.
2. Sleep transient status

Process to stop CAN communication is activated.

All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.
3. Sleep status

IPDM E/R operates in low power mode.

CAN communication is stopped.

When a change in CAN communication line is detected, mode switches to CAN communication status.

When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.
CAN Communication System DescriptionNKS004E3
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS004E4
Refer to LAN-50, "CAN System Specification Chart" .
Function of Detecting Ignition Relay MalfunctionNKS004E5

When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
and parking lamps for 10 minutes to indicate ignition relay malfunction.

When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C relay OFF
Front fog lamps Front fog lamp relay OFF Controlled system Fail-safe mode
Ignition switch signal Ignition relay status Tail lamp relay
ON ON —
OFF OFF —
ON OFF —
OFF ON ON (10 minutes)

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
CONSULT-II Function (IPDM E/R)NKS004E6
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAG RESULTS
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2. Check display content in self-diagnostic results.
Display Item List
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. Inspection Item, Diagnosis Mode Description
SELF-DIAG RESULTS The IPDM E/R performs diagnosis of the CAN communication and self-diagnosis.
DATA MONITOR The input/output data of the IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST The IPDM E/R sends a drive signal to electronic components to check their operation.
Display ItemsCONSULT-II
display codeMalfunction detecting conditionTIME
Possible causes
CRNT PAST
NO DTC IS
DETECTED.FURTHER
TESTING MAY BE
REQUIRED.-----
CAN COMM CIRC U1000

If CAN communication reception/transmission
data has a malfunction, or if any of the control
units malfunction, data reception/transmission
cannot be confirmed.

When the data in CAN communication is not
received before the specified time××Any of or several items
below have errors.

TRANSMIT DIAG

ECM

BCM/SEC

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT MONITOR ITEM ” screen.
2. Touch “ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR”
screen.
3. Touch the required monitoring item on “SELECTION FROM MENU”. In “ALL SIGNALS”, all items are
monitored. In “MAIN SIGNALS”, predetermined items are monitored.
4. Touch “START”.
5. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop recording,
touch “STOP”.
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: Only the vehicle with day time light system operates. ALL SIGNALS All items will be monitored.
MAIN SIGNALS Monitor the predetermined item.
SELECTION FROM MENU Select any item for monitoring.
Item nameCONSULT-II
screen displayDisplay or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM
MENU
Motor fan request MOTOR FAN REQ 1/2/3/4×× ×Signal status input from ECM
A/C Compressor
requestAC COMP REQ ON/OFF×× ×Signal status input from ECM
Tail & clearance
requestTAIL&CLR REQ ON/OFF×× ×Signal status input from BCM
Headlamp LO
requestHL LO REQ ON/OFF×× ×Signal status input from BCM
Headlamp HI
requestHL HI REQ ON/OFF×× ×Signal status input from BCM
Front fog lamp
request FR FOG REQ ON/OFF×× ×Signal status input from BCM
Front wiper request FR WIP REQSTOP/1LOW/
LOW/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 ON/OFF××Signal status input from BCM
Ignition relay status IGN RLY ON/OFF×× ×Ignition relay status monitored
with IPDM E/R
Rear window defog-
ger requestRR DEF REQ ON/OFF×× ×Signal status input from BCM
Oil pressure switch OIL P SW OPEN/CLOSE××Signal status input in IPDM E/R
Daytime running
light requestDTRL REQ
*1ON/OFF××Signal status input from BCM
Hood switch HOOD SW ON/OFF××Signal status input in IPDM E/R
Theft warning horn
requestTHFT HRN REQ ON/OFF××Signal status input from BCM
Horn chirp HORN CHIRP ON/OFF××Output status of IPDM E/R

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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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
PKIC0274E
Symptom Inspection contents Possible cause
Any of front wipers,
tail lamps, parking
lamps, front fog
lamps, and head
lamps (HI, LO) do not
operate.Perform auto active
test. Does system
in question oper-
ate?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 question

IPDM E/R (integrated relay) malfunction
Rear window defog-
ger 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 malfunction between BCM and ECM.

CAN communication signal malfunction 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

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
Cooling fan does not
operate.Perform auto active
test. Does cooling
fan operate?YES

ECM signal input circuit malfunction

CAN communication signal malfunction between ECM and IPDM E/R
NO

Cooling fan motor malfunction

Harness/connector malfunction between cooling fan motor and cooling fan
control module

Cooling fan control module malfunction

Harness/connector malfunction between IPDM E/R and cooling fan control
module

Cooling fan relay malfunction

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

IPDM E/R malfunction
Oil pressure warning
lamp does not oper-
ate.Perform auto active
test. Does oil pres-
sure warning lamp
blink?YES

Harness/connector malfunction between IPDM E/R and oil pressure switch

Oil pressure switch malfunction

IPDM E/R malfunction
NO

CAN communication signal malfunction between IPDM E/R and unified meter
and A/C amp.

Combination meter malfunction Symptom Inspection contents Possible cause

PG-30
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2007 April2007 M35/M45
Inspection with CONSULT-II (Self-Diagnosis)NKS004EB
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 CIRC>>After print-out of the monitor items, refer to LAN-50, "
CAN System Specification Chart" .
CONSULT-II displayCONSULT-II
display codeTIME
Details of diagnosis result
CRNT PAST
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.- - - No malfunction
CAN COMM CIRC U1000××Any of or several items below have errors.

TRANSMIT DIAG

ECM

BCM/SEC