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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
A
B
SECTION
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3 . GROUND .................................................................. 31
. F
Precautions for Battery Service ............................... 3 . Ground Distribution ................................................ 31
.
POWER SUPPLY ROUTING CIRCUIT ..................... 4 . MAIN HARNESS ................................................ 31 .
Schematic ............................................................... 4
. ENGINE ROOM HARNESS ............................... 33 . G
Wiring Diagram -- POWER -- ................................ 5 . ENGINE CONTROL HARNESS ......................... 36 .
BATTERY POWER SUPPLY -- IGNITION SW. BODY HARNESS ............................................... 38 .
IN ANY POSITION ............................................... 5 . BODY NO.2 HARNESS ..................................... 40 .
H
ACCESSORY POWER SUPPLY -- IGNITION TAIL HARNESS .................................................. 41 .
SW. IN "ACC" OR "ON" ...................................... 10 . BACK DOOR HARNESS ................................... 42 .
IGNITION POWER SUPPLY -- IGNITION SW. HARNESS ................................................................ 43
.
IN "ON" AND/OR "START" ..................................11 . Harness Layout ..................................................... 43
. I
Fuse ...................................................................... 16
. HOW TO READ HARNESS LAYOUT ................ 43 .
Fusible Link ........................................................... 16
. OUTLINE ............................................................ 44
.
Circuit Breaker ...................................................... 16
. MAIN HARNESS ................................................ 45 . J
IPDM E/R (INTELLIGENT POWER DISTRIBUTION ENGINE ROOM HARNESS ............................... 47 .
MODULE ENGINE ROOM) ..................................... 17 . ENGINE CONTROL HARNESS ......................... 51 .
System Description ............................................... 17 . BODY HARNESS ............................................... 53 .
PG
SYSTEMS CONTROLLED BY IPDM E/R .......... 17 . BODY NO.2 HARNESS ..................................... 55 .
CAN COMMUNICATION LINE CONTROL ........ 17 . TAIL HARNESS .................................................. 56 .
IPDM E/R STATUS CONTROL .......................... 18 . ROOM LAMP HARNESS ................................... 57 .
CAN Communication System Description ............. 18 . DOOR HARNESS .............................................. 58 . L
CAN Communication Unit ..................................... 18 . Wiring Diagram Codes (Cell Codes) ..................... 60 .
TYPE 1 ............................................................... 19
. ELECTRICAL UNITS LOCATION ........................... 63 .
TYPE 2/TYPE3 .................................................. 20 . Electrical Units Location ........................................ 63 . M
TYPE 4/TYPE5 .................................................. 21 . ENGINE COMPARTMENT ................................. 63 .
TYPE 6/TYPE7 .................................................. 22 . PASSENGER COMPARTMENT ........................ 64 .
Function of Detecting Ignition Relay Malfunction ... 23 LUGGAGE COMPARTMENT ............................. 67 .
Auto Active Test .................................................... 24. HARNESS CONNECTOR ........................................ 68 .
DESCRIPTION ................................................... 24 . Description ............................................................. 68
.
OPERATION PROCEDURE .............................. 24 . HARNESS CONNECTOR (TAB-LOCKING
INSPECTION IN AUTO ACTIVE TEST MODE ... 24 TYPE) ................................................................. 68
.
Schematic ............................................................. 26
. HARNESS CONNECTOR (SLIDE-LOCKING
IPDM E/R Terminal Arrangement .......................... 27 . TYPE) ................................................................. 69
.
IPDM E/R Terminal Inspection .............................. 28 . JOINT CONNECTOR (J/C) ...................................... 70 .
IPDM E/R Power/Ground Circuit Inspection ......... 29 . Terminal Arrangement ........................................... 70 .
Removal and Installation of IPDM E/R .................. 30 . ELECTRICAL UNITS ............................................... 71 .
REMOVAL .......................................................... 30 . Terminal Arrangement ........................................... 71 .
INSTALLATION .................................................. 30 . SMJ (SUPER MULTIPLE JUNCTION) .................... 73 .
Terminal Arrangement ........................................... 73 .
PG-1
STANDARDIZED RELAY ......................................... 75 . FUSE BLOCK - JUNCTION BOX (J/B) ...................77 .
Description ............................................................. 75
. Terminal Arrangement ............................................77
.
NORMAL OPEN, NORMAL CLOSED AND FUSE, FUSIBLE LINK AND RELAY BOX ...............78 .
MIXED TYPE RELAYS ....................................... 75 . Terminal Arrangement ............................................78
.
TYPE OF STANDARDIZED RELAYS ................. 75 .
PG-2
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Battery Service AKS003RD
This vehicle is equipped with the automatic window adjusting function. When a door is opened, the window
automatically lowers slightly to avoid contact between the window and the side roof panel. After the door is B
closed, the window will automatically raise slightly.
On vehicles equipped with the automatic window adjusting function, lower both the driver and front passenger
side windows before disconnecting the battery cables. This will prevent interference between the side window C
and the roof panel when either door is opened/closed.
CAUTION: D
After the battery cables are disconnected, do not open/close the driver and/or front passenger door
with the window in the full up position. The automatic window adjusting function will not work and the
side roof panel may be damaged. E
F
G
H
I
J
PG
L
M
PG-3
POWER SUPPLY ROUTING CIRCUIT
POWER SUPPLY ROUTING CIRCUIT PFP:24110
Schematic AKS0012B
TKWT0523E
PG-4
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram -- POWER -- AKS0012C
BATTERY POWER SUPPLY -- IGNITION SW. IN ANY POSITION A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0524E
PG-5
POWER SUPPLY ROUTING CIRCUIT
TKWT0525E
PG-6
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0526E
PG-7
POWER SUPPLY ROUTING CIRCUIT
TKWT0527E
PG-8
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0528E
PG-9
POWER SUPPLY ROUTING CIRCUIT
ACCESSORY POWER SUPPLY -- IGNITION SW. IN "ACC" OR "ON"
TKWT0529E
PG-10
POWER SUPPLY ROUTING CIRCUIT
IGNITION POWER SUPPLY -- IGNITION SW. IN "ON" AND/OR "START"
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0530E
PG-11
POWER SUPPLY ROUTING CIRCUIT
TKWT0531E
PG-12
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0532E
PG-13
POWER SUPPLY ROUTING CIRCUIT
TKWT0533E
PG-14
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0534E
PG-15
POWER SUPPLY ROUTING CIRCUIT
Fuse AKS0012D
q If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.
q Use fuse of specified rating. Never use fuse of more than speci-
fied rating.
q Do not partially install fuse; always insert it into fuse holder prop-
erly.
q Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not
used for a long period of time.
CEL083
Fusible Link AKS0012E
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:
q 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 inci-
dent.
q Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts. CKIT0163E
Circuit Breaker AKS0012F
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.
SEL109W
PG-16
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7 A
System Description AKS0012G
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 relay via IPDM E/R control cir-
cuit.
q IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, etc.
C
q It controls operation of each electrical part 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
Using CAN communication line, it receives signal from BCM and controls the following lamps: E
q Head lamps (Hi, Lo)
q Parking lamps
q Tail lamps F
2. Wiper control
Using CAN communication line, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control G
Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control H
Using CAN communication line, it receives signals from ECM and controls the A/C relay.
5. Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay. I
6. Horn control
Using CAN communication line, it receives signals from BCM and controls horn relay.
J
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 PG
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. L
After CAN communication recovers normally, 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 M
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 Tail and parking lamps 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 was in
Front wiper
just before fail-safe control was initiated.
Rear window defogger Rear window defogger OFF
A/C compressor A/C compressor OFF
PG-17
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 3 seconds have elapsed after CAN communi-
cation 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 hood switch signal is detected, mode switches to CAN communication status.
CAN Communication System Description AKS003MM
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 Unit AKS003MN
Body type Coupe
Axle 2WD
Engine VQ35DE
Transmission A/T M/T
Brake control TCS ABS TCS VDC
Not Not Not Not
Applica- Applica- Applica-
Low tire pressure warning system Applica- Applica- Applica- Applica-
ble ble ble
ble ble ble ble
CAN communication unit
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