engine NISSAN TIIDA 2007 Service Repair Manual

MWI-80
< ECU DIAGNOSIS >
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

MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-81
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
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K
L
MB A
O
P
Wiring DiagramINFOID:0000000001713128
ALMWA0086GB

MWI-82
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
ALMWA0087GB

MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-83
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
ALMIA0251GB

MWI-84
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Fail Safe
INFOID:0000000001713129
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With ECM
ALMIA0252GB

MWI
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
MWI-85
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
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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.

MWI-86
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
DTC Index
INFOID:0000000001713130
NOTE:
The details of TIME display are as follows.
 CRNT: The malfunctions that are detected now
 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It
increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF → ON. It is
fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is
detected again in the process.
CONSULT-III display Fail-safe
TIMENOTERefer to
No DTC is detected.
further testing
may be required.————
U1000: CAN COMM CIRCUIT×CRNT 1 – 39PCS-15

MWI-90
< SYMPTOM DIAGNOSIS >
THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF
THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF
DescriptionINFOID:0000000001538679
The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure).
Diagnosis ProcedureINFOID:0000000001538680
1.CHECK OIL PRESSURE WARNING LAMP
Perform auto active test. Refer to PCS-10, "
Diagnosis Description".
Is oil pressure warning lamp illuminated?
YES >> GO TO 2
NO >> Replace combination meter. Refer to MWI-94, "
Removal and Installation".
2.CHECK IPDM E/R OUTPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect the oil pressure switch connector.
3. Turn ignition switch ON.
4. Check voltage between the oil pressure switch harness connec-
tor F32 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> GO TO 4
3.CHECK OIL PRESSURE SWITCH
Perform a unit check for the oil pressure switch. Refer to MWI-31, "
Component Inspection".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-30, "Removal and Installation of IPDM E/R".
NO >> Replace oil pressure switch.
4.CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT
check the oil pressure switch signal circuit. Refer to MWI-31, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-30, "Removal and Installation of IPDM E/R".
NO >> Repair harness or connector.1 – Ground : Approx. 12V
PKIC1144E

PCS
PCS-1
ELECTRICAL & POWER CONTROL
C
D
E
F
G
H
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K
L B
SECTION PCS
A
O
P N
CONTENTS
POWER CONTROL SYSTEM
IPDM E/R
FUNCTION DIAGNOSIS ...............................
3
RELAY CONTROL SYSTEM ..............................3
System Diagram ........................................................3
System Description ...................................................4
Component Parts Location ........................................5
POWER CONTROL SYSTEM .............................6
System Diagram ........................................................6
System Description ...................................................6
SIGNAL BUFFER SYSTEM ................................7
System Diagram ........................................................7
System Description ...................................................7
POWER CONSUMPTION CONTROL SYS-
TEM .....................................................................
8
System Diagram ........................................................8
System Description ...................................................8
Component Parts Location ........................................9
DIAGNOSIS SYSTEM (IPDM E/R) .....................10
Diagnosis Description .............................................10
CONSULT - III Function (IPDM E/R) .......................13
COMPONENT DIAGNOSIS .........................15
U1000 CAN COMM CIRCUIT .............................15
Description ..............................................................15
DTC Logic ...............................................................15
Diagnosis Procedure ...............................................15
POWER SUPPLY AND GROUND CIRCUIT ......16
Diagnosis Procedure ...............................................16
ECU DIAGNOSIS .........................................17
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
17
Reference Value .....................................................17
Terminal Layout ......................................................19
Physical Values .......................................................19
Wiring Diagram ........................................................23
Fail Safe ..................................................................26
DTC Index ...............................................................28
PRECAUTION ..............................................29
PRECAUTIONS .................................................29
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
29
REMOVAL AND INSTALLATION ...............30
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
30
Removal and Installation of IPDM E/R ....................30
POWER DISTRIBUTION SYSTEM
BASIC INSPECTION ...................................
31
DIAGNOSIS AND REPAIR WORKFLOW ........31
Work Flow ................................................................31
FUNCTION DIAGNOSIS ..............................34
POWER DISTRIBUTION SYSTEM ...................34
System Description ..................................................34
Component Parts Location ......................................34
Component Description ..........................................34
DIAGNOSIS SYSTEM (BCM) ...........................35
COMMON ITEM .........................................................35
COMMON ITEM : Diagnosis Description ................35
COMMON ITEM : CONSULT-III Function ...............35
INTELLIGENT KEY ....................................................35
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ....................................
35
COMPONENT DIAGNOSIS .........................36

PCS-2
U1000 CAN COMM CIRCUIT ............................36
Description ..............................................................36
DTC Logic ...............................................................36
Diagnosis Procedure ..............................................36
POWER SUPPLY AND GROUND CIRCUIT .....37
BCM ...........................................................................37
BCM : Diagnosis Procedure ...................................37
BCM : Special Repair Requirement ........................37
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .............................
37
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................
37
ECU DIAGNOSIS ........................................38
BCM (BODY CONTROL MODULE) ..................38
Reference Value .....................................................38
Terminal Layout ......................................................38
Physical Values ......................................................38
Wiring Diagram .......................................................38
DTC Inspection Priority Chart ...............................38
DTC Index ..............................................................38
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
39
Reference Value .....................................................39
Terminal Layout ......................................................39
Physical Values .......................................................39
Wiring Diagram .......................................................39
Fail Safe .................................................................39
DTC Index ..............................................................39
ON-VEHICLE MAINTENANCE ..................40
PRE-INSPECTION FOR DIAGNOSTIC ............40
Basic Inspection ......................................................40
ON-VEHICLE REPAIR ...............................41
BCM (BODY CONTROL MODULE) ..................41
Removal and Installation .........................................41