relay NISSAN TEANA 2008 Service Manual

PCS
PCS-1
ELECTRICAL & POWER CONTROL
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SECTION PCS
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CONTENTS
POWER CONTROL SYSTEM
IPDM E/R
FUNCTION DIAGNOSIS .. .............................
4
RELAY CONTROL SYSTEM ......................... .....4
System Diagram .................................................. ......4
System Description ...................................................4
Component Parts Location ........................................6
POWER CONTROL SYSTEM .............................7
System Diagram .................................................. ......7
System Description ...................................................7
Component Parts Location ........................................7
SIGNAL BUFFER SYSTEM ................................8
System Diagram .................................................. ......8
System Description ...................................................8
Component Parts Location ........................................8
POWER CONSUMPTION CONTROL SYS-
TEM .....................................................................
9
System Diagram .................................................. ......9
System Description ...................................................9
Component Parts Location ......................................10
DIAGNOSIS SYSTEM (IPDM E/R) .....................11
Diagnosis Description ......................................... ....11
CONSULT-III Function (IPDM E/R) .........................13
COMPONENT DIAGNOSIS .........................16
U1000 CAN COMM CIRCUIT ......................... ....16
Description .......................................................... ....16
DTC Logic ...............................................................16
Diagnosis Procedure ...............................................16
B2098 IGNITION RELAY ON STUCK ...............17
Description .......................................................... ....17
DTC Logic ...............................................................17
Diagnosis Procedure ...............................................17
B2099 IGNITION RELAY OFF STUCK ..............18
Description ........................................................... ....18
DTC Logic ................................................................18
Diagnosis Procedure ...............................................18
POWER SUPPLY AND GROUND CIRCUIT ....19
Diagnosis Procedure ...............................................19
ECU DIAGNOSIS .........................................20
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
20
Reference Value .................................................. ....20
Wiring Diagram - IPDM E/R - ..................................28
Fail-safe ...................................................................31
DTC Index ...............................................................33
ON-VEHICLE REPAIR .................................34
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
34
Exploded View ..................................................... ....34
Removal and Installation .........................................34
POWER DISTRIBUTION SYSTEM
BASIC INSPECTION ....... ............................
35
DIAGNOSIS AND REPAIR WORKFLOW ........35
Work Flow ............................................................ ....35
FUNCTION DIAGNOSIS ..............................38
POWER DISTRIBUTION SYSTEM ...................38
System Description .............................................. ....38
Component Parts Location ......................................40
Component Description ..........................................40
DIAGNOSIS SYSTEM (BCM) ...........................41
COMMON ITEM ..................................................... ....41
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
41
INTELLIGENT KEY ................................................ ....42

PCS-2
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ...................................
42
COMPONENT DIAGNOSIS ........................46
U1000 CAN COMM CIRCUIT ............................46
BCM ...........................................................................46
BCM : Description ...................................................46
BCM : DTC Logic ....................................................46
BCM : Diagnosis Procedure ...................................46
IPDM E/R ...................................................................46
IPDM E/R : Description ...........................................46
IPDM E/R : DTC Logic ............................................46
IPDM E/R : Diagnosis Procedure ...........................46
U1010 CONTROL UNIT (CAN) .........................48
BCM ...........................................................................48
BCM : DTC Logic ....................................................48
BCM : Diagnosis Procedure ...................................48
BCM : Special Repair Requirement ........................48
B2553 IGNITION RELAY ...................................49
Description ..............................................................49
DTC Logic ...............................................................49
Diagnosis Procedure ..............................................49
B260A IGNITION RELAY ..................................51
Description ..............................................................51
DTC Logic ...............................................................51
Diagnosis Procedure ..............................................51
B2614 ACC RELAY ...........................................53
Description ..............................................................53
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................53
Component Inspection ............................................54
B2615 BLOWER RELAY CIRCUIT ...................55
Description ..............................................................55
DTC Logic ...............................................................55
Diagnosis Procedure ..............................................55
Component Inspection ............................................56
B2616 IGNITION RELAY CIRCUIT ...................57
Description ..............................................................57
DTC Logic ...............................................................57
Diagnosis Procedure ..............................................57
Component Inspection ............................................58
B2618 BCM ........................................................59
Description ..............................................................59
DTC Logic ...............................................................59
Diagnosis Procedure ..............................................59
B261A PUSH-BUTTON IGNITION SWITCH .....60
Description ..............................................................60
DTC Logic ...............................................................60
Diagnosis Procedure ..............................................60
POWER SUPPLY AND GROUND CIRCUIT .....62
BCM ...........................................................................62
BCM : Diagnosis Procedure ....................................62
PUSH-BUTTON IGNITION SWITCH .................63
Description ..............................................................63
Component Function Check ..................................63
Diagnosis Procedure ...............................................63
Component Inspection ............................................64
PUSH-BUTTON IGNITION SWITCH POSI-
TION INDICATOR ..............................................
66
Description ..............................................................66
Component Function Check ..................................66
Diagnosis Procedure ...............................................66
Component Inspection ............................................67
POWER DISTRIBUTION SYSTEM ...................68
Wiring Diagram - PDS (POWER DISTRIBUTION
SYSTEM) - ..............................................................
68
ECU DIAGNOSIS .......................................73
BCM (BODY CONTROL MODULE) ..................73
Reference Value .....................................................73
Wiring Diagram - BCM - ..........................................96
Fail-safe ................................................................102
DTC Inspection Priority Chart .............................104
DTC Index ............................................................105
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
107
Reference Value ...................................................107
Wiring Diagram - IPDM E/R - ................................115
Fail-safe ................................................................118
DTC Index ............................................................120
PRECAUTION ...........................................121
PRECAUTIONS ................................................121
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
121
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .................................
121
SYMPTOM DIAGNOSIS ...........................122
POWER DISTRIBUTION SYSTEM ..................122
Symptom Table .....................................................122
PUSH-BUTTON IGNITION SWITCH DOES
NOT OPERATE ................................................
124
Description ............................................................124
Diagnosis Procedure .............................................124
PUSH-BUTTON IGNITION SWITCH POSI-
TION INDICATOR DOES NOT ILLUMINATE ..
125
Description ............................................................125
Diagnosis Procedure .............................................125

PCS-4
< FUNCTION DIAGNOSIS >[IPDM E/R]
RELAY CONTROL SYSTEM
FUNCTION DIAGNOSIS
RELAY CONTROL SYSTEM
System DiagramINFOID:0000000003773255
System DescriptionINFOID:0000000003773256
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION:
IPDM E/R integrated relays cannot be removed.
JPMIA1015GB

PCS
RELAY CONTROL SYSTEM
PCS-5
< FUNCTION DIAGNOSIS >[IPDM E/R]
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NOTE:
BCM controls the starter relay.Control relay Input/output Transmit unit Control part Reference page
• Headlamp low relay
 Headlamp high relay Low beam request signal
 High beam request signalBCM (CAN) Headlamp low
 Headlamp highEXL-11
(Xenon headlamp)
EXL-200
(Halogen headlamp)
Front fog lamp relay Front fog light request signal BCM (CAN) Front fog lampEXL-17
(Xenon headlamp)
EXL-204
(Halogen headlamp)
Tail lamp relay Position light request signal BCM (CAN) Parking lamp
 Side marker lamp
 License plate lamp
Tail lampEXL-21
(Xenon headlamp)
EXL-208
(Halogen headlamp)
IlluminationsINL-12
 Front wiper relay
 Front wiper high relayFront wiper request signal BCM (CAN)
Front wiperWW-5
Front wiper auto stop signal Front wiper motor
Horn relay Theft warning horn request
signal
 Horn reminder signalBCM (CAN) Horn (low)
 Horn (high)SEC-17
 Starter relayNOTE
 Starter control relayStarter control relay signal BCM (CAN)
Starter motorSEC-104SEC-102
Steering lock unit condition
signalSteering lock unit
Starter relay control signal TCM
Steering lock relaySteering lock relay signal BCM (CAN)
Steering lock unitSEC-69
Steering lock unit condition
signalSteering lock unit
Control device (Detention
switch) signalControl device (Detention
switch)
A/C relayA/C compressor request sig-
nalECM (CAN)A/C compressor
(magnet clutch)HAC-36
(Without 7-inch dis-
play)
HAC-154
(With 7-inch display)
 Cooling fan relay-1
 Cooling fan relay-2
 Cooling fan relay-3Cooling fan speed request sig-
nalECM (CAN) Cooling fan motor-
1
 Cooling fan motor-
2EC-60
Headlamp washer relayHeadlamp washer request
signalBCM (CAN) Headlamp washerWW-10
Ignition relayIgnition switch ON signal BCM (CAN)
Ignition relay PCS-17Vehicle speed signal Combination meter (CAN)
Push-button ignition switch
signalPush-button ignition
switch

PCS-6
< FUNCTION DIAGNOSIS >[IPDM E/R]
RELAY CONTROL SYSTEM
Component Parts Location
INFOID:0000000003773257
1. IPDM E/R
A. Engine room (LH)
JPMIA1037ZZ

PCS
POWER CONSUMPTION CONTROL SYSTEM
PCS-9
< FUNCTION DIAGNOSIS >[IPDM E/R]
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POWER CONSUMPTION CONTROL SYSTEM
System DiagramINFOID:0000000003857763
System DescriptionINFOID:0000000003773265
OUTLINE
 IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-
ing to the vehicle status.
 IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-
munication.
Normal mode (wake-up)- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)- Low power consumption control is active.
- CAN transmission is stopped.
SLEEP MODE ACTIVATION
 IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the
conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.
- Outputting signals to actuators
- Switches or relays operating
- Output requests are being received from control units via CAN communication.
 IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep
wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
WAKE-UP OPERATION
 IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep
wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
- Ignition switch ON
- An output request is received from a control unit via CAN communication.
JPMIA1046GB

PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-13
< FUNCTION DIAGNOSIS >[IPDM E/R]
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CONSULT-III Function (IPDM E/R)INFOID:0000000003773268
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
Refer to PCS-33, "DTCIndex".
DATA MONITOR
Monitor item
Cooling fan does not operatePerform auto active test.
Does the cooling fan operate?YES ECM signal input circuit
 CAN communication signal
between ECM and IPDM E/
R
NO Harness or connector be-
tween IPDM E/R and cool-
ing fan motor
 Harness or connector be-
tween IPDM E/R and cool-
ing fan relay
 Cooling fan motor
 Cooling fan relay
 IPDM E/R Symptom Inspection contents Possible cause
Diagnosis mode Description
Ecu Identification Allows confirmation of IPDM E/R part number.
Self Diagnostic Result Displays the diagnosis results judged by IPDM E/R.
Data Monitor Displays the real-time input/output data from IPDM E/R input/output data.
Active Test IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]MAIN SIG-
NALSDescription
MOTOR FAN REQ
[1/2/3/4]×Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On]×Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TAIL&CLR REQ
[Off/On]×Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On]×Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On]×Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On]×Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi]×Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P]×Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK]×Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On]Displays the status of the ignition switch ON signal received from BCM via CAN
communication.

PCS-14
< FUNCTION DIAGNOSIS >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
Te s t i t e m
IGN RLY
[Off/On]×Displays the status of the ignition relay judged by IPDM E/R.
PUSH SW
[Off/On]Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On]Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On]Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On]Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST /INHI/UNKWN]Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On]Displays the status of the control device (detention switch) judged by IPDM E/R.
S/L RLY -REQ
[Off/On]Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLOCK/UNKWN]Displays the status of the steering lock judged by IPDM E/R.
DTRL REQ
[Off]NOTE:
The item is indicated, but not monitored.
OIL P SW
[Open/Close]Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On]Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off]Display the status of the headlamp washer request signal received from BCM via
CAN communication.
THFT HRN REQ
[Off/On]Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On]Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
CRNRNG LMP REQ
[Off]NOTE:
The item is indicated, but not monitored. Monitor Item
[Unit]MAIN SIG-
NALSDescription
Test item Operation Description
CORNERING LAMPOff
NOTE:
The item is indicated, but cannot be tested. LH
RH
HORN On Operates horn relay for 20 ms.
FRONT WIPEROff OFF
Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
MOTOR FAN1OFF
2 Operates the cooling fan relay-1.
3 Operates the cooling fan relay-2.
4 Operates the cooling fan relay-2 and cooling fan relay-3.
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 s.

PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-15
< FUNCTION DIAGNOSIS >[IPDM E/R]
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EXTERNAL LAMPSOff OFF
TAIL Operates the tail lamp relay.
Lo Operates the headlamp low relay.
HiOperates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog Operates the front fog lamp relay. Test item Operation Description

PCS
B2098 IGNITION RELAY ON STUCK
PCS-17
< COMPONENT DIAGNOSIS >[IPDM E/R]
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B2098 IGNITION RELAY ON STUCK
DescriptionINFOID:0000000003773272
 IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-
munication.
 Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/
h (2.5 MPH) or less.
 Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5
MPH) or when an abnormal condition occurs in CAN communication from the combination meter (Emer-
gency OFF)
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times within 1.5 seconds.
NOTE:
The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch
is pressed.
DTC LogicINFOID:0000000003773273
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000003773274
1.PERFORM SELF DIAGNOSIS
1. Turn ignition switch ON.
2. Erase “Self Diagnostic Result” of IPDM E/R.
3. Turn ignition switch OFF, and wait for 1 second or more.
4. Turn ignition switch ON. Check “Self Diagnostic Result” again.
Is
“IGN RELAY ON” displayed?
YES >> Replace IPDM E/R.
NO >> Refer to GI-35, "
Intermittent Incident".
DTCCONSULT-III dis-
play descriptionDTC Detection Condition Possible causes
B2098 IGN RELAY ONThe ignition relay ON is detected for 1 second at ignition switch OFF
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)Ignition relay malfunction