Infiniti EX35. Manual — part 1323
SEC-188
< ECU DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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 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.
Control part
Fail-safe operation
Cooling fan
• Outputs the pulse duty signal (PWM signal) 100% when the ignition switch is turned
ON
• Outputs the pulse duty signal (PWM signal) 0% 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
• Side maker 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
• 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
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 min-
utes
OFF
ON
Ignition relay OFF stuck
Detects DTC “B2099: IGN RELAY OFF”
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
SEC-189
< ECU DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
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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.
DTC Index
INFOID:0000000003778266
NOTE:
• The details of time display are as follows.
- CRNT: A malfunction is detected now
- PAST: A malfunction was detected in the past.
• IGN counter is displayed on FFD (Freeze Frame data).
- The number is 0 when is detected now
- The number increases like 1
→
2 ··· 38
→
39 after returning to the normal condition whenever IGN OFF
→
ON.
- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
×
: Applicable
Ignition switch
Front wiper switch
Front wiper auto stop signal
ON
OFF
The front wiper auto stop signal (stop posi-
tion) cannot be input for 10 seconds.
ON
The front wiper auto stop signal does not
change for 10 seconds.
CONSULT display
Fail-safe
Reference
No DTC is detected.
further testing
may be required.
—
—
U1000: CAN COMM CIRCUIT
×
B2098: IGN RELAY ON
×
B2099: IGN RELAY OFF
—
B2108: STRG LCK RELAY ON
—
B2109: STRG LCK RELAY OFF
—
B210A: STRG LCK STATE SW
—
B210B: START CONT RLY ON
—
B210C: START CONT RLY OFF
—
B210D: STARTER RELAY ON
—
B210E: STARTER RELAY OFF
—
B210F: INTRLCK/PNP SW ON
—
B2110: INTRLCK/PNP SW OFF
—
SEC-190
< SYMPTOM DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
SECURITY CONTROL SYSTEM
SYMPTOM DIAGNOSIS
SECURITY CONTROL SYSTEM
Symptom Table
INFOID:0000000003586662
The engine start function, door lock function, power distribution system and NATS-IVIS/NVIS in the Intelligent
Key system are closely related to each other regarding control. Narrow down the functional area in question
by performing following table to identify which function is malfunctioning. The vehicle security function can
operate only when the door lock and power distribution system are operating normally. Therefore, it is easy to
identify any factor unique to the vehicle security system by performing following table.
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion.
NOTE:
Before starting vehicle security system operation check, the following condition are met.
• Open front windows
• Turn ignition switch OFF
• Pull out lntelligent Key from key slot.
NO.
Function
Operation condition
Symptom
Diagnostic Item
Reference
page
1
INTELLIGENT
KEY SYSTEM/
DOOR LOCK
FUNCTION
Lock/unlock door with door re-
quest switch.
(Intelligent Key is into the out-
side key antenna detection ar-
ea)
Door does not lock/unlock
—
2
POWER DIS-
TRIBUTION
FUNCTION
Press push-button ignition
switch under the following con-
dition.
• Selector lever position is in P
or N position.
• Do not depress brake pedal.
Push-button ignition switch is
not operated
—
3
INTELLIGENT
KEY SYSTEM/
ENGINE START
FUNCTION
Start engine with Intelligent Key
into the vehicle (inside key an-
tenna detection area)
Engine can not start with Intel-
ligent Key
—
4
Open the door after ignition
switch turn ON to OFF.
Steering is not locked
—
5
INFINITI VEHI-
CLE IMMOBI-
LIZEER
SYSTEM-NATS
FUNCTION
Start engine with Intelligent Key
into the key slot.
Engine can not start (Intelli-
gent Key into the key slot)
—
6
Insert Intelligent Key into the
key slot.
Key slot indicator is not illumi-
nate
—
SECURITY CONTROL SYSTEM
SEC-191
< SYMPTOM DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
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7
VEHICLE SE-
CURITY SYS-
TEM
Lock all doors with Intelligent
Key or door request switch
Vehicle security system can
not be set
Intelligent key
Door request switch
Door key cylinder
Lock all doors with Intelligent
Key or door request switch
Security indicator does not
turn ON
—
In the armed phase, open the
door
Vehicle security alarm does
not activate
—
When alarm sound, press Intel-
ligent Key button
Vehicle security system can
not be canceled
Intelligent Key
When alarm sound, press door
request switch
Door request switch
When alarm sound, operate
door key cylinder
Door key cylinder
8
POWER DIS-
TRIBUTION
FUNCTION
Press push-button ignition
switch under the following con-
dition.
• Selector lever position is in P
or N position.
• Do not depress brake pedal.
Push-button ignition switch
position indicator does not
turn on
—
NO.
Function
Operation condition
Symptom
Diagnostic Item
Reference
page
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