relay INFINITI FX35 2004 Service Manual

LT-66
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
NOTE:
1. Vehicles without auto light system display this item, but cannot monitor it.
2. Vehicles without daytime light system display this item, but cannot monitor it.
ACTIVE TEST
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
NOTE:
1. Vehicles without daytime light lamp system display this item, but cannot monitor it.
2. This item is displayed, but cannot monitor it.
CONSULT-II Functions (IPDM E/R)AKS007I6
CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, self-
diagnostic results, data monitor and active test through data reception and command transmission via the
IPDM E/R CAN communication line.
CONSULT-II OPERATION
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.
DOOR SW - RR “ON/OFF”Displays status of the rear door as judged from the rear door switch (RH) signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - RL “ON/OFF”Displays status of the rear door as judged from the rear door switch (LH) signal. (Door is
open: ON/Door is closed: OFF)
BACK DOOR SW “ON/OFF”Displays status of the back door as judged from the back door switch signal. (Door is open:
ON/Door is closed: OFF)
TURN SIGNAL R “ON/OFF” Displays status (Turn right: ON/Others: OFF) as judged from lighting switch signal.
TURN SIGNAL L “ON/OFF” Displays status (Turn left: ON/Others: OFF) as judged from lighting switch signal.
ENGINE RUN
NOTE 2“ON/OFF” Displays status (Engine running: ON/Others: OFF) as judged from engine status signal.
PKB SW
NOTE 2“ON/OFF”Displays status (Parking brake switch: ON/Others: OFF) as judged from parking brake
switch signal.
OPTICAL SENSOR
NOTE 1
[0 - 5V] Displays “ambient light (close to 5V when light/close to 0V when dark)” judged from optical
sensor signal. Monitor item Contents
Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON–OFF.
HEAD LAMP Allows headlamp relay to operate by switching ON−OFF.
FR FOG LAMP Allows fog lamp relay to operate by switching ON–OFF.
DTRL
NOTE 1Allow day time light lamp operate by switching ON–OFF.
CORNERING LAMP
NOTE 2—
Inspection Item, Diagnosis Mode Description
SELF-DIAGNOSTIC RESULTS The IPDM E/R performs self-diagnosis of CAN communication.
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.

LT-68
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
3. Touch “START”.
4. Touch the required monitoring item on “SELECTION FROM MENU”. In “ALL SIGNALS”, all items are
monitored. In “MAIN SIGNALS”, predetermined items are monitored.
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 dis-
play 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.
Trouble Diagnosis Chart by SymptomAKS007F3
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
Position lights request TAIL & CLR REQ ON/OFF×× ×Signal status input from BCM
Headlamp low beam request HL LO REQ ON/OFF×× ×Signal status input from BCM
Headlamp high beam request HL HI REQ ON/OFF×× ×Signal status input from BCM
Font fog lights request FR FOG REQ ON/OFF×× ×Signal status input from BCM
Te s t i t e mCONSULT-II
screen displayDescription
Headlamp relay (HI, LO) output
LAMPSAllows headlamp relay (HI, LO) to operate by switching operation (OFF, HI ON,
LO ON) at your option (Head lamp high beam repeats ON–OFF every 1 second).
Front fog lamp relay output Allows fog lamp relay to operate by switching operation ON-OFF at your option
Tail lamp relay output TAIL LAMP Allows tail lamp relay to operate by switching operation ON-OFF at your option
Trouble phenomenon Malfunction system and reference

Parking lamps and headlamps will not illuminate when out-
side of the vehicle becomes dark. (Lighting switch 1st posi-
tion and 2nd position operate normally.)

Parking lamps and headlamp will not go out when outside
of the vehicle becomes light. (Lighting switch 1st position
and 2nd position operate normally.)

Headlamps go out when outside of the vehicle becomes
light, but parking lamps stay on.

Refer to LT- 6 4 , "WORK SUPPORT" .

Refer to LT- 6 9 , "Lighting Switch Inspection" .

Refer to LT- 6 9 , "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
Parking lamps illuminate when outside of the vehicle
becomes dark, but headlamps stay off. (Lighting switch 1st
position and 2nd position operate normally.)

Refer to LT- 6 4 , "WORK SUPPORT" .

Refer to LT- 6 9 , "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
Auto light adjustment system will not operate. (Lighting switch
AUTO, 1st position and 2nd position operate normally.)

Refer to LT- 6 9 , "Optical Sensor System Inspection" .
If above system is normal, replace BCM.

FRONT FOG LAMP
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FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationAKS007O5
System DescriptionAKS007CI
Control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The light-
ing switch must be in the 2ND position or AUTO position (LOW beam is ON) for front fog lamp operation.
When the lighting switch is placed in the fog lamp position the BCM (body control module) receives input sig-
nal requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communi-
cated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication
lines. The central processing unit of the IPDM E/R controls the front fog lamp relay coil. When activated, this
relay directs power to the front fog lamps.
OUTLINE
Power is supplied at all times

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 88, located in IPDM E/R (intelligent power distribution module engine room)]

to front fog lamp relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
Power is also supplied at all times

through 50A fusible link (letter M, located in the fuse and fusible link block)

to BCM (body control module) terminal 55

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM (body control module) terminal 42.
When the ignition switch is in ON or START position, power is supplied
PKIA5269E

LT-78
FRONT FOG LAMP
Revision: 2004 November 2004 FX35/FX45

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38.
When the ignition switch is in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM (body control module) terminal 11.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50 and E51.
Fog Lamp Operation
The fog lamp switch is built into the combination switch. The lighting switch must be in the 2ND position or
AUTO position (LOW beam is ON) and the fog lamp switch must be ON for fog lamp operation.
With the fog lamp switch in the ON position, the CPU of the IPDM E/R grounds the coil side of the fog lamp
relay. The fog lamp relay then directs power

through IPDM E/R terminal 37

to front fog lamp LH terminal 1

through IPDM E/R terminal 36

to front fog lamp RH terminal 1.
Ground is supplied

to front fog lamp LH terminal 2

through grounds E21, E50 and E51, and

to front fog lamp RH terminal 2

through grounds E21, E50 and E51.
With power and grounds supplied, the front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), the fog lamp switch is ON, and the
ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the fog lamps (and headlamps) remain illuminated for 5 minutes, then the fog lamps (and
headlamps) are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007CJ
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. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected 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 UnitAKS0080V
Refer to LAN-6, "CAN Communication Unit" .

PARKING, LICENSE PLATE AND TAIL LAMPS
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PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationAKS007O7
System DescriptionAKS007DT
Control of the parking, license plate, and tail lamp operation is dependent upon the position of the lighting
switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body control
module) receives input signal requesting the parking, license plate, side marker and tail lamps to illuminate.
This input signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across
the CAN communication lines. The CPU (central processing unit) of the IPDM E/R (intelligent power distribu-
tion module engine room) controls the tail lamp relay coil. This relay, when energized, directs power to the
parking, license plate, side marker and tail lamps, which then illuminate.
The current that flows by Rear combination lamp unit is controlled, and a tail lamp (LED) is made to turn on.
Power is supplied at all times

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]

to tail lamp relay [located in IPDM E/R (intelligent power distribution module engine room)] and

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
Power is also supplied at all times

through 50A fusible link (letter M, located in the fuse and fusible link block)

to BCM (body control module) terminal 55

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM (body control module) terminal 42

through 10A fuse [No. 20, located in fuse block (J/B)]

to rear combination lamp control unit terminal 1.
With the ignition switch in the ON or START position, power is supplied
PKIA5272E

LT-128
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2004 November 2004 FX35/FX45

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38

through ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM (body control module) terminal 11.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50 and E51

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the parking, license plate, side marker and tail lamps to illuminate. This input signal is
communicated to the IPDM E/R across the CAN communication lines. The CPU in the IPDM E/R controls the
tail lamp relay coil, which when energized, directs power

through IPDM E/R terminal 22

to front side marker lamp LH terminal 1

to clearance lamp LH terminal 2

to license plate lamp LH terminal 1

to rear combination lamp LH terminal 1

to rear combination lamp control unit terminal 2

to front side marker lamp RH terminal 1

to clearance lamp RH terminal 2

to license plate lamp RH terminal 1

to rear combination lamp RH terminal 1.
Ground is supplied at all times

to front side marker lamp LH terminal 2

through grounds E21, E50 and E51

to clearance lamp LH terminal 3

through grounds E21, E50 and E51

to license plate lamp LH terminal 2

through grounds B15 and B45

to rear combination lamp LH terminal 2

through grounds B15 and B45

to front side marker lamp RH terminal 2

through grounds E21, E50 and E51

to clearance lamp RH terminal 3

through grounds E21, E50 and E51

to license plate lamp RH terminal 2

through grounds B15 and B45

to rear combination lamp RH terminal 2

through grounds B203 and B210

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51.

PARKING, LICENSE PLATE AND TAIL LAMPS
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5. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Disconnect rear combination lamp RH and LH connector.
2. Check continuity between rear combination lamp control unit
harness connector B65 terminal 11 (W) and rear combination
lamp LH harness connector B57 terminal 3 (W).
3. Check continuity between rear combination lamp control unit
harness connector B65 terminal 10 (BR) and rear combination
lamp LH harness connector B57 terminal 4 (BR).
4. Check continuity between rear combination lamp control unit
harness connector B65 terminal 9 (LG) and rear combination lamp RH harness connector B219 terminal 3
(LG).
5. Check continuity between rear combination lamp control unit harness connector B65 terminal 8 (Y) and
rear combination lamp RH harness connector B219 terminal 4 (Y).
OK or NG
OK >> Replace rear combination lamp control unit or rear combination lamp, and then check if turn signal
lamps is illuminated.
NG >> Repair harness or connector.
Parking, License Plate and Tail Lamps Do Not Turn OFF (After Approx. 10 Min-
utes)
AKS007E4
1. CHECK IPDM E/R
1. Turn ignition switch ON. Turn the combination switch (lighting switch) to the OFF position. Turn ignition
switch OFF.
2. Verify that the parking, license plate, and tail lamps turn ON and OFF after approximately 10 minutes.
OK or NG
OK >> Ignition relay malfunction. Refer to PG-19, "Function of Detecting Ignition Relay Malfunction" .
NG >> INSPECTION END
License Plate LampAKS007E5
BULB REPLACEMENT, REMOVAL AND INSTALLATION
1. Remove screws and remove license plate lamp from back door.
2. Disconnect license plate lamp connector.11 (W) – 3 (W) : Continuity should exist.
10 (BR) – 4 (BR) : Continuity should exist.
9 (LG) – 3 (LG) : Continuity should exist.
8 (Y) – 4 (Y) : Continuity should exist.
SKIA5910E
SKIA5567E

ILLUMINATION
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ILLUMINATIONPFP:27545
System DescriptionAKS007EI
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) of IPDM E/R (intelligent power distribution module
engine room) controls the tail lamp relay coil. This relay, when energized, directs power to the illumination
lamps, which then illuminate.
Power is supplied at all times

to tail lamp relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)].
Power is also supplied at all times

to BCM (body control module) terminal 55

through 50A fusible link (letter M, located in fuse and fusible link block)

to BCM (body control module) terminal 42

through 15A fuse [No. 22, located in fuse block (J/B)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to unified meter and A/C amp. terminal 21 and

to combination meter terminal 8

through 10A fuse [No. 19, located in fuse block (J/B)].
With the ignition switch in the ON or START position, power is supplied

to BCM (body control module) terminal 38

through 15A fuse [No. 1, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22

through 10A fuse [No. 12, located in fuse block (J/B)]

to ignition relay in the IPDM E/R (intelligent power distribution module engine room)

from ignition switch

to combination meter terminal 7

through 10A fuse [No. 14, located in fuse block (J/B)].
With the ignition switch in the ACC or ON position, power is supplied

to BCM (body control module) terminal 11

through 10A fuse [No. 6, located in fuse block (J/B)].
Ground is supplied

to BCM (body control module) terminals 49 and 52

to unified meter and A/C amp. terminals 29 and 30, and

to combination meter terminals 5, 6, and 15

through grounds M35, M45, and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50, and E51.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The central processing unit of the IPDM E/R controls the tail lamp relay
coil, which, when energized, directs power

through IPDM E/R terminal 22

to glove box lamp terminal 1

to A/T device (illumination) terminal 11

to snow mode switch (illumination) terminal 4

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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SECTION PG
A
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PG
Revision: 2004 November 2004 FX35/FX45
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING CIRCUIT ...................... 3
Schematic ................................................................ 3
Wiring Diagram - POWER - ..................................... 4
BATTERY POWER SUPPLY - IGNITION SW. IN
ANY POSITION ..................................................... 4
ACCESSORY POWER SUPPLY - IGNITION SW.
IN “ACC” OR “ON” .............................................. 10
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 ........................................................... 20
CONSULT-II INSPECTION PROCEDURE ......... 20
SELF-DIAG RESULTS ........................................ 21
DATA MONITOR ................................................. 22
ACTIVE TEST ..................................................... 22
Auto Active Test ..................................................... 24
DESCRIPTION .................................................... 24
OPERATION PROCEDURE ............................... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic .............................................................. 26
IPDM E/R Terminal Arrangement ........................... 27
IPDM E/R Power/Ground Circuit Inspection .......... 28
Inspection With CONSULT-II (Self-Diagnosis) ....... 29
Removal and Installation of IPDM E/R ................... 30
REMOVAL ........................................................... 30
INSTALLATION ................................................... 30GROUND ................................................................... 31
Ground Distribution ................................................. 31
MAIN HARNESS ................................................. 31
ENGINE ROOM HARNESS ................................ 34
ENGINE HARNESS/VK ENGINE MODELS ........ 37
ENGINE HARNESS/VQ ENGINE MODELS ....... 38
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 39
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 40
BODY HARNESS ................................................ 41
BODY NO.2 HARNESS ...................................... 44
ROOM LAMP HARNESS .................................... 45
HARNESS ................................................................. 46
Harness Layout ...................................................... 46
HOW TO READ HARNESS LAYOUT ................. 46
OUTLINE ............................................................. 47
MAIN HARNESS ................................................. 48
ENGINE ROOM HARNESS ................................ 51
ENGINE HARNESS/VK ENGINE MODELS ........ 54
ENGINE HARNESS/VQ ENGINE MODELS ....... 55
ENGINE CONTROL HARNESS/VK ENGINE
MODELS ............................................................. 56
ENGINE CONTROL HARNESS/VQ ENGINE
MODELS ............................................................. 58
BODY HARNESS ................................................ 60
BODY NO.2 HARNESS ...................................... 62
ROOM LAMP HARNESS .................................... 63
FRONT DOOR HARNESS .................................. 64
REAR DOOR HARNESS .................................... 65
BACK DOOR HARNESS .................................... 66
Wiring Diagram Codes (Cell Codes) ...................... 67
ELECTRICAL UNITS LOCATION ............................ 70
Electrical Units Location ......................................... 70
ENGINE COMPARTMENT .................................. 70
PASSENGER COMPARTMENT ......................... 71
LUGGAGE COMPARTMENT .............................. 73
HARNESS CONNECTOR ......................................... 74
Description .............................................................. 74
HERNESS CONNECTOR (TAB-LOCKING

PG-2Revision: 2004 November 2004 FX35/FX45TYPE) .................................................................. 74
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) .................................................................. 75
JOINT CONNECTOR (J/C) ....................................... 76
Terminal Arrangement ............................................ 76
ELECTRICAL UNITS ................................................ 77
Terminal Arrangement ............................................ 77
SMJ (SUPER MULTIPLE JUNCTION) ..................... 79
Terminal Arrangement ............................................ 79STANDARDIZED RELAY .......................................... 81
Description .............................................................. 81
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ........................................ 81
TYPE OF STANDARDIZED RELAYS .................. 81
FUSE BLOCK - JUNCTION BOX (J/B) .................... 83
Terminal Arrangement ............................................. 83
FUSE, FUSIBLE LINK AND RELAY BOX ................ 84
Terminal Arrangement ............................................. 84