front NISSAN TIIDA 2007 Service Repair Manual

PCS-4
< FUNCTION DIAGNOSIS >[IPDM E/R]
RELAY CONTROL SYSTEM
System Description
INFOID:0000000001697580
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.
Control relay Input/output Transmit unit Control partReference
page
Front fog lamp relay Front fog lamp request signal BCM (CAN) Front fog lampsEXL-19
• Headlamp high relay
 Headlamp low relay High beam request signal
 Low beam request signalBCM (CAN) Headlamp high
 Headlamp lowEXL-8
EXL-10
Tail lamp relay Position light request signal BCM (CAN)Parking lamps
 License plate lamps
 Tail lamps
 Illumination systemEXL-24
 Front wiper relay
 Front wiper high relayFront wiper request signal BCM (CAN) Front wiper motorWW-4
Rear window defogger re-
layRear window defogger re-
quest signalBCM (CAN) Rear window defoggerDEF-6
A/C relay A/C request signalBCM (CAN)
ECM (CAN)A/C compressorHAC-11
Starter relay Ignition switch START signal TCM Starter motorSTR-6
Cooling fan relay Cooling fan request signal ECM (CAN) Cooling fan relayCO-4
ECM relay ECM relay control signal ECM (CAN) ECM relayEC-124
Throttle control motor relayThrottle control motor control
signalECM (CAN)Throttle control motor re-
layEC-38
Fuel pump relay Fuel pump request signal ECM (CAN) Fuel pumpEC-38
Ignition relay Ignition switch ON signal Ignition switch Ignition relayEC-47

PCS-8
< FUNCTION DIAGNOSIS >[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM
System DiagramINFOID:0000000001697586
System DescriptionINFOID:0000000001697587
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.
- Front wiper fail-safe operation
- Outputting signals to actuators
- Switches or relays operating
- Auto active test is starting
- Emergency OFF
- 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.
ALCIA0030GB

PCS-10
< FUNCTION DIAGNOSIS >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000001697589
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
 Oil pressure low/coolant pressure high warning indicator
 Oil pressure gauge
 Rear window defogger
 Front wipers
 Tail, license and parking lamps
 Front fog lamps
 Headlamps (Hi, Lo)
 A/C compressor (magnetic clutch)
 Cooling fan
Operation Procedure
1. Close the hood and front door RH, and lift the wiper arms from the windshield (to prevent windshield dam-
age due to wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield before hand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON and, within 20 seconds, press the front door switch LH 10 times. Then turn the
ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actuated, check door switch system. Refer to DLK-65, "
DRIVER
SIDE : Description" (with Intelligent Key system), DLK-499, "DRIVER SIDE : Description" (without
Intelligent Key system).
 Do not start the engine.
Inspection in Auto Active Test Mode

PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-11
< FUNCTION DIAGNOSIS >[IPDM E/R]
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When auto active test mode is actuated, the following 7 steps are repeated 3 times.
Concept of auto active test
Operation
sequenceInspection Location Operation
1 Rear window defogger 10 seconds
2 Front wipers LO for 5 seconds → HI for 5 seconds
3 Tail, license and parking lamps 10 seconds
3 Front fog lamps 10 seconds
4 Headlamps LO for 10 seconds → HI on-off for 5 seconds
5 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
6 Cooling fan 10 seconds
WKIA5988E
WKIA5163E

PCS-12
< FUNCTION DIAGNOSIS >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
 IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
 The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
Symptom Inspection contents Possible cause
Oil pressure low warning indicator does not operatePerform auto active test.
Does the oil pressure low/
coolant temperature high
warning indicator operate?YES IPDM E/R signal input cir-
cuit
 ECM signal input circuit
 CAN communication signal
between ECM and combi-
nation meter
NO CAN communication signal
between IPDM E/R, BCM
and combination meter
Rear window defogger does not operatePerform auto active test.
Does the rear window defog-
ger operate?YES BCM signal input circuit
NO Harness or connector be-
tween A/C and AV switch
assembly and AV control
unit
 CAN communication signal
between BCM and IPDM E/
R
Any of the following components do not operate
 Front wipers
Tail lamps
 License plate lamps
 Parking lamps
Front fog lamps
 Headlamps (Hi, Lo)Perform auto active test.
Does the applicable system
operate?YES BCM signal input system
NO Lamp or front wiper motor
malfunction
 Lamp or front wiper motor
ground circuit
 Harness or connector be-
tween IPDM E/R and appli-
cable system
 IPDM E/R (integrated relay
malfunction)
A/C compressor does not operatePerform auto active test.
Does the A/C compressor op-
erate?YES BCM signal input circuit
 CAN communication signal
between BCM and ECM
 CAN communication signal
between ECM and IPDM E/
R
NO Magnetic clutch malfunction
 Harness or connector be-
tween IPDM E/R and mag-
netic clutch
 IPDM E/R (integrated relay
malfunction)
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 Cooling fan motor malfunc-
tion
 Harness or connector be-
tween IPDM E/R and cool-
ing fan
 IPDM E/R (integrated relay
malfunction)

PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-13
< FUNCTION DIAGNOSIS >[IPDM E/R]
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CONSULT - III Function (IPDM E/R)INFOID:0000000001697590
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC
Refer to PCS-28, "DTCIndex".
DATA MONITOR
Monitor item
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 status of the cooling fan speed request signal received from ECM via
CAN communication.
A/C COMP REQ
[OFF/ON]×Displays the status of the A/C request signal received from AV control unit 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 lamp request signal received from BCM via
CAN communication.
HL WASHER REQ
[OFF/ON]NOTE:
This item is displayed, but cannot be monitored.
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.
ST RLY REQ
[OFF/ON]Displays the status of the starter request signal received from ECM via CAN com-
munication.
IGN RLY
[OFF/ON]×Displays the status of the ignition relay judged by IPDM E/R.
RR DEF REQ
[OFF/ON]×Displays the status of the rear defogger request signal received from AV control
unit via CAN communication.
OIL P SW
[OPEN/CLOSE]Displays the status of the oil pressure switch judged by IPDM E/R.
DTRL REQ
[OFF]NOTE:
This item is displayed, but cannot be monitored.
HOOD SW
[OPEN/CLOSE]NOTE:
This item is displayed, but cannot be monitored.

PCS-14
< FUNCTION DIAGNOSIS >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
Te s t i t e m
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. Monitor Item
[Unit]MAIN SIG-
NALSDescription
Test item Operation Description
REAR DEFOGGEROFF OFF
ON Operates rear window defogger relay.
FRONT WIPEROFF OFF
LO Operates the front wiper relay.
HI Operates the front wiper relay and front wiper high relay.
HEAD LAMP WASHER ON —
MOTOR FAN1OFF
2OFF
3 Operates the cooling fan relay.
4 Operates the cooling fan relay.
EXTERNAL LAMPSOFF OFF
TAIL Operates the tail lamp relay.
LO Operates the headlamp low relay.
HIOperates the headlamp low relay and the headlamp high relay ON/OFF at 1
second intervals.
FOG Operates the front fog lamp relay
HORN ON Operates horn relay for 20 ms.

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-17
< ECU DIAGNOSIS >[IPDM E/R]
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ECU DIAGNOSIS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference ValueINFOID:0000000001697595
VALUES ON THE DIAGNOSIS TOOL
Monitor Item Condition Value/Status
MOTOR FAN REQ Engine idle speedChanges depending on engine
coolant temperature, air conditioner
operation status, vehicle speed,
etc.0 - 100 %
A/C COMP REQA/C switch OFF OFF
A/C switch ON ON
TA I L & C L R R E QLighting switch OFF OFF
Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated) ON
HL LO REQLighting switch OFF OFF
Lighting switch 2ND HI or AUTO (Light is illuminated) ON
HL HI REQLighting switch OFF OFF
Lighting switch HI ON
FR FOG REQLighting switch 2ND or AUTO (Light
is illuminated)Front fog lamp switch OFF OFF
 Front fog lamp switch ON
 Daytime light activated ON
HL WASHER REQNOTE:
This item is displayed, but cannot be monitored.OFF
FR WIP REQ Ignition switch ONFront wiper switch OFF STOP
Front wiper switch INT 1LOW
Front wiper switch LO LOW
Front wiper switch HI HI
WIP AUTO STOP Ignition switch ONFront wiper stop position STOP P
Any position other than front wiper
stop positionACT P
WIP PROT Ignition switch ONFront wiper operates normally OFF
Front wiper stops at fail-safe opera-
tionBLOCK
ST RLY REQIgnition switch OFF or ACC OFF
Ignition switch START ON
IGN RLYIgnition switch OFF or ACC OFF
Ignition switch ON ON
RR DEF REQRear defogger switch OFF OFF
Rear defogger switch ON ON
OIL P SWIgnition switch OFF, ACC or engine running OPEN
Ignition switch ON CLOSE
DTRL REQNOTE:
This item is displayed, but cannot be monitored.OFF
HOOD SWNOTE:
This item is displayed, but cannot be monitored.OFF

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-21
< ECU DIAGNOSIS >[IPDM E/R]
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29 PTail lamp relay (park-
ing lamps)Output — Lighting switch in 2nd position Battery voltage
30 R Fuse 54 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
31 O Fuse 55 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
32 LWiper high speed sig-
nalOutputON or
STARTWiper switchOFF, LO, INT 0V
HI Battery voltage
33 YWiper low speed sig-
nalOutputON or
STARTWiper switchOFF 0V
LO or INT Battery voltage
35 BRStarter relay (inhibit
switch)InputON or
STARTSelector lever in "P" or "N"
(CVT or A/T) or clutch pedal
depressed (M/T)Battery voltage
Selector lever any other posi-
tion (CVT or A/T) or clutch
pedal released (M/T)0V
36 BR Fuel pump relay Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
37 G Oil pressure switch InputON or
STARTEngine running and oil pres-
sure within specificationBattery voltage
Engine not running or oil pres-
sure below specification0V
38 R Wiper auto stop signal InputON or
STARTWipers not in park position Battery voltage
Wipers in park position 0V
39 B Ground Input — — 0V
40 P CAN-L — ON — —
41 L CAN-H — ON — —
46 YThrottle control motor
relay controlInput —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
47 GRFuel pump relay con-
trolInput —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
50 V Front fog lamp (LH)Output ON or
STARTLighting
switch must
be in the 2ND
position
(LOW beam
is ON) and
the front fog
lamp switchOFF 0V
ON Battery voltage
51 W Front fog lamp (RH) OutputON or
STARTLighting
switch must
be in the 2ND
position
(LOW beam
is ON) and
the front fog
lamp switchOFF 0V
ON Battery voltage
52 LLH Low beam head-
lampOutput — Lighting switch in 2nd position Battery voltage Te r m i n a lWire
colorSignal name
Signal
input/
outputMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-27
< ECU DIAGNOSIS >[IPDM E/R]
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IGNITION RELAY MALFUNCTION DETECTION FUNCTION
 IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
 IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation
coil circuit.
 If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
NOTE:
The tail lamp turns OFF when the ignition switch is turned ON.
FRONT WIPER CONTROL
IPDM E/R detects front wiper stop position by a front wiper auto stop signal.
When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 second activation and 20 second stop five times.
NOTE:
This operation status can be confirmed on the IPDM E/R “DATA MONITOR” that displays “Block” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
Control part Fail-safe in operation
Cooling fan Turns ON the cooling fan relay when the ignition switch is turned ON
 Turns OFF the cooling fan relay when the ignition switch is turned OFF
Control part Fail-safe in operation
Headlamp Turns ON the headlamp low relay when the ignition switch is turned ON
 Turns OFF the headlamp low relay when the ignition switch is turned OFF
 Headlamp high relay OFF
Parking lamps
 License plate lamps
 Tail lamps Turns ON the tail lamp relay when the ignition switch is turned ON
 Turns OFF the tail lamp relay when the ignition switch is turned OFF
Front wiper The status just before activation of fail-safe control is maintained until the ignition
switch is turned OFF while the front wiper is operating at LO or HI speed.
 The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-
safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C relay OFF
Front fog lamps Front fog lamp relay OFF
Ignition switch Ignition relay Tail lamp relay
ON ON —
OFF OFF —
Ignition switch Front wiper switch Auto stop signal
ONOFFFront wiper stop position signal cannot be
input 10 seconds.
ON The signal does not change for 10 seconds.