Nissan Maxima. Instruction — part 1234
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< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Fail Safe
INFOID:0000000010054177
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
If No CAN Communication Is Available With BCM
88
(R/W)
Ground
Washer pump power sup-
ply
Output
Ignition switch ON
Battery voltage
89
(L/W)
Ground Headlamp HI (RH)
Output
Ignition
switch ON
• Lighting switch HI
• Lighting switch PASS
Battery voltage
Lighting switch OFF
0 V
90
(G)
Ground Headlamp HI (LH)
Output
Ignition
switch ON
• Lighting switch HI
• Lighting switch PASS
Battery voltage
Lighting switch OFF
0 V
91
(LG/
R)
Ground
Parking lamp (RH)
Output
Ignition
switch ON
Lighting switch 1ST
Battery voltage
Side marker lamp (RH)
Lighting switch OFF
0 V
92
(LG/
B)
Ground
Parking lamp (LH)
Output
Ignition
switch ON
Lighting switch 1ST
Battery voltage
Side marker lamp (LH)
Lighting switch OFF
0 V
99
(BR/
W)
Ground Ambient sensor ground
—
Ignition switch ON
0V
100
(SB)
Ground Ambient sensor
—
Ignition switch ON
5V
101
(W)
Ground
Refrigerant pressure sen-
sor ground
—
Ignition switch ON
0V
102
(R)
Ground
Refrigerant pressure sen-
sor
—
• Ignition switch ON (READY)
• Both A/C switch and blower motor
switch ON (electric compressor oper-
ates)
1.0 - 4.0V
103
(P)
Ground
Refrigerant pressure sen-
sor power supply
—
Ignition switch ON
5V
105
(V)
Ground
Daytime light relay control
(Only for Canada models)
Output
Ignition
switch ON
Daytime light system ac-
tive
Battery voltage
Ignition
switch ON
Daytime light system inac-
tive
0 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
−
Control part
Fail-safe in operation
Cooling fan
• Signals cooling fans ON when the ignition switch is turned ON
• Signals cooling fans OFF when the ignition switch is turned OFF
A/C compressor
A/C relay OFF
Generator
Outputs the power generation command signal (PWM signal) 0%
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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< ECU DIAGNOSIS INFORMATION >
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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-1 inside it.
• IPDM E/R judges the ignition relay-1 error if the voltage differs between the contact circuit and the excitation
coil circuit.
• If the ignition relay-1 cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay-1 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 seconds activation and 20 seconds 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
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
• Side marker lamps
• License plate lamps
• Illumination
• 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.
Front fog lamps (if equipped)
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
DTC
Ignition switch
Ignition relay-1
Tail lamp relay
—
ON
ON
—
—
OFF
OFF
—
B2098: IGN RELAY ON
OFF
ON
ON (10 minutes)
B2099: IGN RELAY OFF
ON
OFF
—
Ignition switch
Front wiper switch
Auto stop signal
ON
OFF
Front wiper stop position signal cannot be
input 10 seconds.
ON
The signal does not change for 10 seconds.
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< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
DTC Index
INFOID:0000000010054178
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 display
Fail-safe
TIME
NOTE
Refer to
No DTC is detected.
further testing
may be required.
—
—
—
—
U1000: CAN COMM CIRCUIT
×
CRNT
1 – 39
B2098: IGN RELAY ON
×
CRNT
1 – 39
B2099: IGN RELAY OFF
—
CRNT
1 – 39
B210B: START CONT RLY ON
—
CRNT
1 – 39
B210C: START CONT RLY OFF
—
CRNT
1 – 39
B210D: STARTER RELAY ON
—
CRNT
1 – 39
B210E: STARTER RELAY OFF
—
CRNT
1 – 39
B210F: INTRLCK/PNP SW ON
—
CRNT
1 – 39
B2110: INTRLCK/PNP SW OFF
—
CRNT
1 – 39
FRONT WIPER AND WASHER SYSTEM
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< WIRING DIAGRAM >
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WIRING DIAGRAM
FRONT WIPER AND WASHER SYSTEM
Wiring Diagram
INFOID:0000000010048969
ABLWA2256GB
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