Nissan Qashqai (2007-2010). Manual - part 1856

PCS-28

< ECU DIAGNOSIS >

[IPDM E/R]

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

Fail Safe

INFOID:0000000000927005

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

JCMWA0423GB

PCS

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

PCS-29

< ECU DIAGNOSIS >

[IPDM E/R]

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*1: HR engine models

*2: MR engine and K9K engine models

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 relay is turned OFF when the ignition switch is turned ON.

Front wiper control

IPDM E/R detects the front wiper stop position with the front wiper auto stop signal.
When the front wiper auto stop signal is in the conditions listed below, IPDM E/R repeats a front wiper 10 sec-
onds operation and 20 seconds stop five times.

NOTE:

Control part

Fail-safe in operation

Cooling fan

• The cooling fan relay-2*

1

 or the cooling fan relay-3*

2

 turns ON when the ignition switch 

is turned ON

• Turns off the fan motor low relay when the ignition switch is turned OFF

A/C compressor

A/C relay OFF

Control part

Fail-safe in operation

Headlamp

• The headlamp low relay turns ON when the ignition switch is turned ON
• The headlamp low relay turns OFF when the ignition switch is turned OFF
• Headlamp high relay OFF

• Parking  lamps
• License plate lamps
• Tail lamps
• Illuminations

• The tail lamp relay turns ON when the ignition switch is turned ON
• The tail lamp relay turns OFF 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 front 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

Starter motor

Inhibit relay OFF

Rear window defogger

Rear window defogger relay OFF

Headlamp washer

Headlamp washer relay OFF

PTC heater

PTC heater relay OFF

DTC

Ignition switch

Ignition relay

Tail lamp relay

—

ON

ON

—

—

OFF

OFF

—

B2098: IGN RLY ON

OFF

ON

ON (10 minutes)

B2099: IGN RLY OFF

ON

OFF

—

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.

PCS-30

< ECU DIAGNOSIS >

[IPDM E/R]

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

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.

DTC Index

INFOID:0000000000927006

NOTE:

The details of time display are as follows.

• CRNT: The malfunctions that are detected now.

• PAST: The number is indicated when it is normal at present and a malfunction was detected in the past.

CONSULT display

Fail-safe

Timing

NOTE

Reference page

No DTC is detected.
further testing
may be required.

—

—

—

—

U1000: CAN COMM CIRCUIT

×

CRNT

PAST

PCS-14

B2098: IGN RELAY ON

×

CRNT

PAST

PCS-15

B2099: IGN RELAY OFF

—

CRNT

PAST

PCS-16

B2100: EEPROM

—

CRNT

PAST

PCS-17

PCS

PRECAUTIONS

PCS-31

< PRECAUTION >

[IPDM E/R]

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PRECAUTION

PRECAUTIONS

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

INFOID:0000000001109155

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 SRC 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 SRC 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.