Infiniti FX35, FX50 (S51). Manual — part 1970
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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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 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 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 marker 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”
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< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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:0000000005605571
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 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.
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
—
WIPER AND WASHER SYSTEM SYMPTOMS
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SYMPTOM DIAGNOSIS
WIPER AND WASHER SYSTEM SYMPTOMS
WITH RAIN SENSOR
WITH RAIN SENSOR : Symptom Table
INFOID:0000000005234781
CAUTION:
Perform the self-diagnosis with CONSULT-III before performing the diagnosis by symptom. Perform
the diagnosis by DTC if DTC is detected.
Symptom
Probable malfunction location
Inspection item
Front wiper does not
operate.
HI only
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
• IPDM E/R
• Harness between IPDM E/R and front wiper
motor
• Front wiper motor
Front wiper motor (HI) circuit
Refer to
.
Front wiper request signal
• BCM
• IPDM E/R
IPDM E/R DATA MONITOR
“FR WIP REQ”
LO and INT/AUTO
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
• IPDM E/R
• Harness between IPDM E/R and front wiper
motor
• Front wiper motor
Front wiper motor (LO) circuit
Refer to
.
Front wiper request signal
• BCM
• IPDM E/R
IPDM E/R DATA MONITOR
“FR WIP REQ”
INT/AUTO only
(Auto operation)
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
• Rain sensor
• Harness between rain sensor and BCM
• BCM
Rain sensor
Refer to
.
HI, LO and INT/AUTO
SYMPTOM DIAGNOSIS
“FRONT WIPER DOES NOT OPERATE”
Refer to
.
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< SYMPTOM DIAGNOSIS >
WIPER AND WASHER SYSTEM SYMPTOMS
Front wiper does not
stop.
HI only
• Combination switch
• BCM
Combination switch
Refer to
Front wiper request signal
• BCM
• IPDM E/R
IPDM E/R DATA MONITOR
“FR WIP REQ”
IPDM E/R
—
LO only
• Combination switch
• BCM
Combination switch
Refer to
Front wiper request signal
• BCM
• IPDM E/R
IPDM E/R DATA MONITOR
“FR WIP REQ”
IPDM E/R
—
INT/AUTO only
(Auto operation)
• Combination switch
• BCM
Combination switch
Refer to
• Rain sensor
• Harness between rain sensor and BCM
• BCM
Rain sensor
Refer to
.
Front wiper does not
operate normally.
Sensitivity adjustment
cannot be performed.
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCM
—
Wiper is not linked to
the washer operation.
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
BCM
—
Does not return to stop
position. [Repeatedly
operates for 10 sec-
onds and then stops
for 20 seconds. After
that, it stops the opera-
tion. (Fail-safe)]
• IPDM E/R
• Harness between IPDM E/R and front wiper
motor
• Front wiper motor
Front wiper auto stop signal
circuit
Refer to
.
Rear wiper does not
operate.
ON only
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
INT only
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
ON and INT
• Combination switch
• Harness between combination switch and BCM
• BCM
Combination switch
Refer to
• BCM
• Harness between rear wiper motor and BCM
• Harness between rear wiper motor and ground
• Rear wiper motor
Rear wiper motor circuit
Refer to
.
Rear wiper does not
stop.
ON only
• Combination switch
• BCM
Combination switch
Refer to
INT only
• Combination switch
• BCM
Combination switch
Refer to
Symptom
Probable malfunction location
Inspection item
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