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>> Download pg documenatation <<Text preview - extract from the documentK ELECTRICAL
A
B
SECTION
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3 . GROUND CIRCUIT .................................................. 28 . F
Precautions for Supplemental Restraint System Ground Distribution ................................................ 28 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- MAIN HARNESS ................................................ 28 .
SIONER" ................................................................. 3
. ENGINE ROOM HARNESS ............................... 31 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . ENGINE CONTROL HARNESS ......................... 33 .
POWER SUPPLY ROUTING CIRCUIT ..................... 4 . BODY HARNESS ............................................... 34 .
Schematic ............................................................... 4
. BODY NO. 2 HARNESS .................................... 35 .
H
Wiring Diagram -- POWER -- ................................ 6 . HARNESS ................................................................ 37
.
BATTERY POWER SUPPLY -- IGNITION SW. Harness Layout ..................................................... 37 .
IN ANY POSITION ............................................... 6 . HOW TO READ HARNESS LAYOUT ................ 37 .
ACCESSORY POWER SUPPLY -- IGNITION OUTLINE ............................................................ 38. I
SW. IN ACC OR ON ........................................... 10 . MAIN HARNESS ................................................ 39 .
IGNITION POWER SUPPLY -- IGNITION SW. ENGINE ROOM HARNESS (LH VIEW) ............. 41 .
IN ON ..................................................................11
. ENGINE ROOM HARNESS (RH VIEW) ............ 44 . J
IGNITION POWER SUPPLY -- IGNITION SW. ENGINE CONTROL HARNESS ......................... 46 .
IN ON AND/OR START ...................................... 12 . BODY HARNESS AND TAIL HARNESS ............ 48 .
IPDM E/R (INTELLIGENT POWER DISTRIBUTION BODY NO. 2 HARNESS AND BODY NO. 3 HAR- PG
MODULE ENGINE ROOM) ..................................... 15 . NESS .................................................................. 50
.
System Description ............................................... 15 . ROOM LAMP HARNESS ................................... 52 .
SYSTEMS CONTROLLED BY IPDM E/R .......... 15 . FRONT DOOR LH HARNESS ........................... 53 .
CAN COMMUNICATION LINE CONTROL ........ 15 . FRONT DOOR RH HARNESS ........................... 53 . L
IPDM E/R STATUS CONTROL .......................... 16 . REAR DOOR LH HARNESS .............................. 54 .
Function of Detecting Ignition Relay Malfunction ... 16 REAR DOOR RH HARNESS ............................. 54 .
CONSULT-II Function (IPDM E/R) ........................ 17 . Wiring Diagram Codes (Cell Codes) ..................... 55 . M
CONSULT-II BASIC OPERATION ...................... 17 . ELECTRICAL UNITS LOCATION ........................... 58 .
SELF-DIAGNOSTIC RESULTS ......................... 18 . Electrical Units Location ........................................ 58 .
DATA MONITOR ................................................ 18 . ENGINE COMPARTMENT ................................. 58 .
ACTIVE TEST .................................................... 20 . PASSENGER COMPARTMENT ........................ 59 .
Auto Active Test .................................................... 21
. Fuse ....................................................................... 61
.
DESCRIPTION ................................................... 21 . Fusible Link ........................................................... 61
.
OPERATION PROCEDURE .............................. 21 . Circuit Breaker (Built Into BCM) ............................ 61 .
INSPECTION IN AUTO ACTIVE TEST MODE ... 21 HARNESS CONNECTOR ........................................ 62 .
Schematic ............................................................. 23
. Description ............................................................. 62
.
IPDM E/R Terminal Arrangement .......................... 24 . HARNESS CONNECTOR (TAB-LOCKING
IPDM E/R Power/Ground Circuit Inspection ......... 25 . TYPE) ................................................................. 62
.
Inspection with CONSULT-II (Self-Diagnosis) ....... 26 . HARNESS CONNECTOR (SLIDE-LOCKING
Removal and Installation of IPDM E/R .................. 27 . TYPE) ................................................................. 63
.
REMOVAL .......................................................... 27
. HARNESS CONNECTOR (DIRECT-CONNECT
INSTALLATION .................................................. 27 . SRS COMPONENT TYPE) ................................ 63 .
Revision: July 2005 PG-1 2005 Maxima
ELECTRICAL UNITS ............................................... 65 . MIXED TYPE RELAYS .......................................66 .
Terminal Arrangement ........................................... 65 . TYPE OF STANDARDIZED RELAYS .................66 .
STANDARDIZED RELAY ......................................... 66 . FUSE BLOCK-JUNCTION BOX(J/B) ......................68 .
Description ............................................................. 66
. Terminal Arrangement ............................................68
.
NORMAL OPEN, NORMAL CLOSED AND FUSE AND FUSIBLE LINK BOX .............................69 .
Terminal Arrangement ............................................69
.
Revision: July 2005 PG-2 2005 Maxima
PRECAUTIONS
PRECAUTIONS PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00FSH
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Wiring Diagrams and Trouble Diagnosis EKS00FSI
When you read wiring diagrams, refer to the following:
H
q Refer to GI-13, "How to Read Wiring Diagrams" in GI section.
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution.
When you perform trouble diagnosis, refer to the following: I
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.
q Refer to GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
J
PG
L
M
Revision: July 2005 PG-3 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
POWER SUPPLY ROUTING CIRCUIT PFP:24110
Schematic EKS009HX
For detailed ground distribution, refer to PG-28, "Ground Distribution" .
WKWA1972E
Revision: July 2005 PG-4 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
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WKWA1973E
Revision: July 2005 PG-5 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram -- POWER -- EKS009HY
BATTERY POWER SUPPLY -- IGNITION SW. IN ANY POSITION
WKWA1974E
Revision: July 2005 PG-6 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
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E
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WKWA1975E
Revision: July 2005 PG-7 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
WKWA3246E
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POWER SUPPLY ROUTING CIRCUIT
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WKWA3247E
Revision: July 2005 PG-9 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
ACCESSORY POWER SUPPLY -- IGNITION SW. IN ACC OR ON
WKWA3248E
Revision: July 2005 PG-10 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
IGNITION POWER SUPPLY -- IGNITION SW. IN ON
A
B
C
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E
F
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WKWA3249E
Revision: July 2005 PG-11 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
IGNITION POWER SUPPLY -- IGNITION SW. IN ON AND/OR START
WKWA3250E
Revision: July 2005 PG-12 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
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WKWA3251E
Revision: July 2005 PG-13 2005 Maxima
POWER SUPPLY ROUTING CIRCUIT
WKWA3252E
Revision: July 2005 PG-14 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7 A
System Description EKS009HZ
q IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
B
which were originally placed in engine compartment. It controls integrated relays via IPDM E/R control cir-
cuit.
q IPDM E/R-integrated control circuit performs ON-OFF operation of relays, CAN communication control, oil
pressure switch signal reception, etc. C
q It controls operation of each electrical component via BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed. D
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control E
Using CAN communication lines, it receives signal from BCM and controls the following lamps:
q Head lamps (Hi, Lo)
q Parking lamps F
q Tail lamps
q Cornering lamps
q Front fog lamps G
2. Wiper control
Using CAN communication lines, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control H
Using CAN communication lines, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control I
Using CAN communication lines, it receives signals from ECM and controls the A/C compressor (mag-
netic clutch).
5. Cooling fan control J
Using CAN communication lines, it receives signals from ECM and controls cooling fan.
6. Horn control
Using CAN communication lines, it receives signals from BCM and controls horn relay. PG
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 a maximum amount of information with minimum wiring. Each control unit can L
transmit and receive data, and reads necessary information only.
1. Fail-safe control
q When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control. M
After CAN communication returns to normal operation, it also returns to normal control.
q Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
q With the ignition switch ON, the headlamp (low) is ON.
Headlamp
q With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps q With the ignition switch ON, the tail and parking lamps are ON.
q With the ignition switch OFF, the tail and parking lamps are OFF.
q With the ignition switch ON, the cooling fan HI operates.
Cooling fan
q With the ignition switch OFF, the cooling fan stops.
Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
Front wiper
was in just before fail-safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
Front fog lamps Front fog lamp relay OFF
Revision: July 2005 PG-15 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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
q CAN communication is normally performed with other control units.
q Individual unit control by IPDM E/R is normally performed.
q When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status
q Process to stop CAN communication is activated.
q All systems controlled by IPDM E/R are stopped. When 1 second has elapsed after CAN communica-
tion with other control units is stopped, mode switches to sleep status.
3. Sleep status
q IPDM E/R operates in low current-consumption mode.
q CAN communication is stopped.
q When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.
q When a change in ignition switch signal is detected, mode switches to CAN communication status.
Function of Detecting Ignition Relay Malfunction EKS009I0
q When the integrated ignition relay is stuck in a "closed contact" position and cannot be turned OFF, IPDM
E/R turns ON tail and parking lamps for 10 minutes to indicate IPDM E/R malfunction.
q When the state of the integrated ignition relay does not agree with the state of the ignition switch signal
received via CAN communication, the IPDM E/R activates the tail lamp relay.
Ignition switch signal Ignition relay status Tail lamp relay
ON ON --
OFF OFF --
ON OFF --
OFF ON ON (10 minutes)
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.
Revision: July 2005 PG-16 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
CONSULT-II Function (IPDM E/R) EKS009I1
A
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
IPDM E/R diagnostic mode Description
SELF-DIAG RESULTS Displays IPDM E/R self-diagnosis results. B
DATA MONITOR Displays IPDM E/R input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
C
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
CONSULT-II BASIC OPERATION
D
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 carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON- E
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
F
G
H
BBIA0002E
2. Touch "START (NISSAN BASED VHCL)".
I
J
PG
BCIA0029E
L
3. Touch "IPDM E/R" on "SELECT SYSTEM" screen.
q If "IPDM E/R" is not displayed, print "SELECT SYSTEM"
screen, then refer to GI-37, "CONSULT-II Data Link Connec- M
tor (DLC) Circuit" .
BCIA0030E
Revision: July 2005 PG-17 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
4. Select the desired part to be diagnosed on the "SELECT DIAG
MODE" screen.
BCIA0031E
SELF-DIAGNOSTIC RESULTS
Operation Procedure
1. Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE"
screen.
2. Self-diagnosis results are displayed.
SKIA4956E
Display Item List
TIME Possible
CONSULT-II
Display items Error return condition causes
display code CRNT PAST
NO DTC IS DETECTED.
FURTHER TESTING -- -- -- -- --
MAY BE REQUIRED.
Any of items
q If CAN communication reception/transmission listed below
data has an error, or if any of the control units fail, have errors:
CAN COMM CIRC U1000 data reception/transmission cannot be confirmed. X X q TRANSMIT
q When the data in CAN communication is not DIAG
received before the specified time. q ECM
q BCM/SEC
NOTE:
The details for display of the period are as follows:
q CRNT: Error currently detected with IPDM E/R.
q PAST: Error detected in the past and placed in IPDM E/R memory.
DATA MONITOR
Operation Procedure
1. Touch "DATA MONITOR" on "SELECT DIAG MODE" screen.
2. Touch "ALL SIGNALS", "MAIN SIGNALS" or "SELECTION FROM MENU" on the "DATA MONITOR"
screen.
ALL SIGNALS All signals will be monitored.
MAIN SIGNALS Monitors the predetermined item(s).
SELECTION FROM
Selects and monitors individual signal(s).
MENU
3. Touch "START".
4. Touch the required monitoring item on "SELECTION FROM MENU".
Revision: July 2005 PG-18 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
5. Touch "RECORD" while monitoring to record the status of the item being monitored. To stop recording,
touch "STOP". A
B
C
D
E
F
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Revision: July 2005 PG-19 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
All Signals, Main Signals, Selection From Menu
CONSULT-II Monitor item selection
Item name screen display Display or unit ALL MAIN SELECTION Description
SIGNALS SIGNALS FROM MENU
Signal status input from
Motor fan request MOTOR FAN REQ 1/2/3/4 X X X
ECM
Compressor Signal status input from
AC COMP REQ ON/OFF X X X
request ECM
Position lights Signal status input from
TAIL & CLR REQ ON/OFF X X X
request BCM
Headlamp LO Signal status input from
HL LO REQ ON/OFF X X X
request BCM
Headlamp HI Signal status input from
HL HI REQ ON/OFF X X X
request BCM
Front fog lights Signal status input from
FR FOG REQ ON/OFF X X X
request BCM
Signal status input from
FR wiper request FR WIP REQ STOP/1LO/LO/HI X X X
BCM
Wiper auto stop WIP AUTO STOP ACT P/STOP P X X X Output status of IPDM E/R
Wiper protection WIP PROT OFF/LS/HS/Block X X Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF X X Status of input signal NOTE
Ignition relay Ignition relay status moni-
IGN RLY ON/OFF X X X
status tored with IPDM E/R
Rear defogger Signal status input from
RR DEF REQ ON/OFF X X X
request BCM
Signal status input from
Oil pressure switch OIL P SW OPEN/CLOSE X X
IPDM E/R
Theft warning horn Signal status input from
THFT HRN REQ ON/OFF X X
request BCM
Horn chirp HORN CHIRP ON/OFF X X Output status of IPDM E/R
Cornering lamp CRNRNG LMP Signal status input from
OFF/LEFT/RIGHT X X
request REQ BCM
NOTE:
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is in ACC position,
display may not be correct.
ACTIVE TEST
Operation Procedure
1. Touch "ACTIVE TEST" on "SELECT DIAG-MODE" screen.
2. Touch item to be tested, and check operation.
3. Touch "START".
4. Touch "STOP" while testing to stop the operation.
Test name CONSULT-II screen display Description
Tail lamp output TAIL LAMP With a certain ON-OFF operation, the tail lamp relay can be operated.
With a certain ON-OFF operation, the rear defogger relay can be oper-
Rear defogger output REAR DEFOGGER
ated.
With a certain operation (OFF, HI ON, LO ON), the front wiper relay
Front wiper (HI, LO) output FRONT WIPER
(Lo, Hi) can be operated.
Cooling fan output MOTOR FAN With a certain operation (1, 2, 3, 4), the cooling fan can be operated.
With a certain operation (OFF, HI ON, LO ON, FOG ON), the lamp
Lamp (HI, LO, FOG) output LAMPS
relay (Lo, Hi, Fog) can be operated.
Revision: July 2005 PG-20 2005 Maxima
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Test name CONSULT-II screen display Description
A
With a certain operation (OFF, ON), the cornering lamp relay (RH, LH)
Cornering lamp output CORNERING LAMP
can be operated.
Horn output HORN With a certain ON-OFF operation, the horn relay can be operated.
B
Auto Active Test EKS009I2
DESCRIPTION C
q In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to
the following systems:
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