Infiniti G35 (V35) Sedan. Manual - part 994

 

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Infiniti G35 (V35) Sedan. Manual - part 994

 

 

PCS-30

< ECU DIAGNOSIS >

[IPDM E/R]

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.

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:

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

DTC

Ignition switch

Ignition relay

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.

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-31

< ECU DIAGNOSIS >

[IPDM E/R]

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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:0000000000964197

*1: Only for the models with AFS

*2: Only for the models without AFS (The display is fixed to CRNT until the self-diagnosis results are erased when the malfunctions were
found in the past.)

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

*1

PCS-15

CRNT

*2

B2098: IGN RELAY ON

×

CRNT

1 – 39

PCS-16

B2099: IGN RELAY OFF

CRNT

1 – 39

PCS-17

B2108: STRG LCK RELAY ON

CRNT

1 – 39

SEC-89

B2109: STRG LCK RELAY OFF

CRNT

1 – 39

SEC-90

B210A: STRG LCK STATE SW

CRNT

1 – 39

SEC-91

B210B: START CONT RLY ON

CRNT

1 – 39

SEC-95

B210C: START CONT RLY OFF

CRNT

1 – 39

SEC-96

B210D: STARTER RELAY ON

CRNT

1 – 39

SEC-97

B210E: STARTER RELAY OFF

CRNT

1 – 39

SEC-98

B210F: INTRLCK/PNP SW ON

CRNT

1 – 39

SEC-100

B2110: INTRLCK/PNP SW OFF

CRNT

1 – 39

SEC-104

PCS-32

< PRECAUTION >

[IPDM E/R]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000000964198

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000000964199

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

PIIB3706J

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-33

< ON-VEHICLE REPAIR >

[IPDM E/R]

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ON-VEHICLE REPAIR

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)

Exploded View

INFOID:0000000000964200

Removal and Installation

INFOID:0000000000964201

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove cowl top cover (RH). Refer to 

EXT-18, "Exploded

View"

.

3.

Pull up the IPDM E/R assembly while pressing the pawl (A) on
the back of the IPDM E/R cover B (1).

4.

Remove the IPDM E/R cover A while pressing the pawl (A) at
the lower end of the IPDM E/R cover A (1).

5.

Disconnect the harness connector and remove IPDM E/R (2).

1.

IPDM E/R cover A

2.

IPDM E/R

3.

IPDM E/R cover B

4.

Bracket

JPMIA0058ZZ

JPMIA0059ZZ

JPMIA0060ZZ

 

 

 

 

 

 

 

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