2007 NISSAN TIIDA window

MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-85
< ECU DIAGNOSIS >
C
D
E
F
G
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I
J
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MB A
O
P If No CAN Communication Is Available With BCM
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.

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-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]
C
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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-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-22
< ECU DIAGNOSIS >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
54 PRH Low beam head-
lampOutput — Lighting switch in 2nd position Battery voltage
55 GLH High beam head-
lampOutput —Lighting switch in 2nd position
and placed in HIGH or PASS
positionBattery voltage
56 YRH High beam head-
lampOutput —Lighting switch in 2nd position
and placed in HIGH or PASS
positionBattery voltage
59 B Ground Input — — 0V
60 RRear window defogger
relayOutputON or
STARTRear defogger Switch ON Battery voltage
Rear defogger Switch OFF 0V Te r m i n a lWire
colorSignal nameSignal
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]
C
D
E
F
G
H
I
J
K
L B A
O
P N If No CAN Communication Is Available With BCM
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.