Nissan March K13. Manual — part 484
PCS-18
< ECU DIAGNOSIS INFORMATION >
[IPDM E/R (WITH I-KEY)]
IPDM E/R
23
(SB)
Ground
Horn relay control
Output
The horn is deactivated
Battery voltage
The horn is activated
0 V
24
(V)
Ground
Front wiper stop position
Input
Ignition
switch
ON
Front wiper stop position
0 V
Any position other than
front wiper stop position
Battery voltage
27
(SB)
Ground
Ignition relay power sup-
ply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
30
(R)
Ground
Starter motor
Output
Ignition switch ON
0 V
At engine cranking
Battery voltage
31
(P)
Ground
Cooling fan relay power
supply
Output
Cooling fan OFF
0 V
Cooling fan operated
Battery voltage
32
(G)
Ground
Battery power supply
Input
Ignition switch OFF
Battery voltage
33
(BR)
Ground
Fuel pump
Output
• Approximately 1 second after
turning the ignition switch ON
• Engine running
0 - 1.5 V
Approximately 1 second or more af-
ter turning the ignition switch ON
Battery voltage
35
(G)
Ground
ECM relay power supply
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
38
(L)
Ground
Headlamp LO (LH)
Output
Ignition
switch
ON
Lighting switch OFF
0 V
Lighting switch 2ND
Battery voltage
39
(LG)
Ground
Starter relay
Output
Ignition switch ON
0 V
At engine cranking
Battery voltage
40
(P)
Ground
Headlamp LO (RH)
Output
Ignition
switch
ON
Lighting switch OFF
0 V
Lighting switch 2ND
Battery voltage
42
(LG)
Ground
Oil pressure switch
Input
Ignition
switch
ON
Engine stopped
0 V
Engine running
Battery voltage
43
(GR)
Ground
Fuel pump relay control
Output
• Approximately 1 second after
turning the ignition switch ON
• Engine running
0 - 1.0 V
Approximately 1 second or more af-
ter turning the ignition switch ON
Battery voltage
47
(R/W)
Ground
ECM power supply
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
Terminal NO.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
PCS
IPDM E/R
PCS-19
< ECU DIAGNOSIS INFORMATION >
[IPDM E/R (WITH I-KEY)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
50
(P)
Ground
ECM relay control
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 - 1.0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
53
(LG)
Ground
Front wiper LO
Output
Ignition
switch
ON
Front wiper switch OFF
0 V
Front wiper switch LO
Battery voltage
54
(GR)
Ground
Front wiper HI
Output
Ignition
switch
ON
Front wiper switch OFF
0 V
Front wiper switch HI
Battery voltage
55
(B)
Ground
Ground
—
Ignition switch ON
0 V
56
(BR)
Ground
ABS actuator and electric
unit (control unit) power
supply
Output
Ignition switch OFF
Battery voltage
57
(R)
Ground
TCM power supply
Output
Ignition switch OFF
Battery voltage
58
(P)
Ground
Illuminations
Output
Ignition
switch
ON
Lighting switch OFF
0 V
Lighting switch 1ST
Battery voltage
59
(R)
Ground
Tail lamp
Output
Ignition
switch
ON
Lighting switch OFF
0 V
Lighting switch 1ST
Battery voltage
61
(G)
Ground
Headlamp HI (LH)
Output
Ignition
switch
ON
Lighting switch OFF
0 V
• Lighting switch HI
• Lighting switch PASS
Battery voltage
63
(Y)
Ground
Headlamp HI (RH)
Output
Ignition
switch
ON
Lighting switch OFF
0 V
• Lighting switch HI
• Lighting switch PASS
Battery voltage
64
(V)
Ground
A/C relay power supply
Output
Engine
running
A/C switch OFF
0 V
A/C switch ON
(A/C compressor is op-
erating)
Battery voltage
65
(L/W)
Ground
Throttle control motor re-
lay power supply
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
68
(G/W)
Ground
Throttle control motor re-
lay control
Output
Ignition switch ON
→
OFF
0 – 1.0 V
↓
Battery voltage
↓
0 V
Ignition switch ON
0 – 1.0 V
70
(Y)
Ground
Ignition relay power sup-
ply
Output
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
71
(BR)
Ground
ECM power supply
Output
Ignition switch OFF
Battery voltage
Terminal NO.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
PCS-20
< ECU DIAGNOSIS INFORMATION >
[IPDM E/R (WITH I-KEY)]
IPDM E/R
Fail-Safe
INFOID:0000000005914123
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
72
(SB)
Ground
ECM power supply
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
75
(R)
Ground
ECM relay power
supply
Output
Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF)
0 V
• Ignition switch ON
• Ignition switch OFF
(For a few seconds after turning
ignition switch OFF)
Battery voltage
76
(BR)
Ground
Transmission range
switch
Input
Select lever in any position other
than P or N (Ignition switch ON)
0 V
Select lever P or N (Ignition switch
ON)
Battery voltage
80
(R)
Ground
A/T shift selector
(Detention switch)
Input
Ignition
switch
ON
Select lever P
0 V
Select lever in any posi-
tion other than P
Battery voltage
81
(SB)
Ground
Push-button ignition
switch
Input
Press the push-button ignition
switch
0 V
Release the push-button ignition
switch
Battery voltage
82
(SB)
Ground
Steering lock relay control
Output
Steering lock is unlocked
Battery voltage
Steering lock is locked
0 V
87
(BG)
Ground
Steering lock unit
power supply
Output
Ignition
switch
OFF
A few seconds after
opening the driver door
Battery voltage
Ignition
switch
LOCK
Press the push-button
ignition switch
Battery voltage
Ignition switch ACC or ON
0 V
88
(GR)
Ground
Steering lock unit condi-
tion-1
Input
Steering lock is unlocked
Battery voltage
Steering lock is locked
0 V
89
(P)
Ground
Steering lock unit condi-
tion-2
Input
Steering lock is unlocked
0 V
Steering lock is locked
Battery voltage
90
(L)
Ground
Ignition relay power sup-
ply
Input
Ignition switch OFF or ACC
Battery voltage
Ignition switch ON
0 V
Terminal NO.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
PCS
IPDM E/R
PCS-21
< ECU DIAGNOSIS INFORMATION >
[IPDM E/R (WITH I-KEY)]
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.
FRONT WIPER PROTECTION FUNCTION
IPDM E/R detects front wiper stop position by a front wiper stop position signal.
When a front wiper stop position signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop.
NOTE:
Control part
Fail-safe operation
Cooling fan
• The cooling fan relay turn ON when the ignition switch is turned ON (Cooling fan HI operation)
• The cooling fan relay turn OFF when the ignition switch is turned OFF
A/C compressor
A/C relay OFF
Alternator
Outputs the power generation command signal (PWM signal) 0%
Control part
Fail-safe 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
• Illuminations
• 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 motor
• 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.
• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe control
is activated while front wiper motor is operated and wiper stop in the other position than stop
position.
Front fog lamps
Front fog lamp relay OFF
Horn
Horn OFF
Ignition relay
The status just before activation of fail-safe is maintained.
Starter motor
Starter control relay OFF
Steering lock unit
Steering lock relay OFF
Voltage judgment
IPDM E/R judgment
Operation
Ignition relay contact
side
Ignition relay excitation
coil side
ON
ON
Ignition relay ON normal
—
OFF
OFF
Ignition relay OFF normal
—
ON
OFF
Ignition relay ON stuck
• Detects DTC “B2098: IGN RELAY ON”
• Turns ON the tail lamp relay for 10 minutes
OFF
ON
Ignition relay OFF stuck
Detects DTC “B2099: IGN RELAY OFF”
Ignition switch
Front wiper switch
Front wiper stop position signal
ON
OFF
The front wiper stop position signal (stop position) cannot be input for 10 seconds.
ON
The front wiper stop position signal does not change for 10 seconds.
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