Infiniti M (2012 year). Manual

PCS

PRECAUTIONS

PCS-3

< PRECAUTION >

[IPDM E/R]

PRECAUTION

PRECAUTIONS

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

INFOID:0000000007152834

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 AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that 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 “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnection

INFOID:0000000007152835

CAUTION:

Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,

then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect

both battery cables.

• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing

work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

2012 M

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PCS

SYSTEM

PCS-7

< SYSTEM DESCRIPTION >

[IPDM E/R]

To prevent damage to the parts, IPDM E/R integrated relays cannot be removed.

*: For models with steering lock unit only.
NOTE:
BCM controls the starter relay.

RELAY CONTROL SYSTEM : Fail-safe

INFOID:0000000006887693

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

Control relay

Input/output

Transmit unit

Control part

Reference page

Headlamp low relay

• Low beam request signal
• Daytime running light re-

quest signal

BCM (CAN)

Headlamp (LO)

•

EXL-12

(Without

DTRL)

•

EXL-13

(With DTRL)

Headlamp high relay

High beam request signal

BCM (CAN)

Headlamp (HI)

Front fog lamp relay

Front fog light request signal

BCM (CAN)

Front fog lamp

EXL-19

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp

•

EXL-20

(Without

DTRL)

•

EXL-21

(With DTRL)

Illumination

INL-6

• Front wiper main relay
• Front wiper HI/LO relay

Front wiper request signal

BCM (CAN)

Front wiper motor

WW-7

Front wiper position signal

Front wiper motor

• Horn relay
• Vehicle security horn re-

lay

• Theft warning horn request

signal

• Horn reminder signal

BCM (CAN)

• Horn (high)
• Vehicle security

horn

SEC-18

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

•

SEC-10

•

SEC-10

Steering lock unit condition
signal

Steering lock unit

Starter relay control signal

TCM

Steering lock relay*

Steering lock relay signal

BCM (CAN)

Steering lock unit*

SEC-10

Steering lock unit condition
signal

Steering lock unit

A/T shift selector (Detention
switch) signal

A/T shift selector
(Detention switch)

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(magnet clutch)

•

HAC-22

(with Forest

Air)

•

HAC-30

(without

Forest Air)

Ignition relay

Ignition switch ON signal

BCM (CAN)

Each control unit,
sensor, actuator and
relay (ignition power
supply)

PCS-37

Vehicle speed signal

Combination meter
(CAN)

Push-button ignition switch
signal

Push-button ignition
switch

Daytime running light relay

• Daytime running light re-

quest signal

• Position light request signal

BCM (CAN)

• Headlamp (LO)
• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp

EXL-16

2012 M

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PCS-8

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

If No CAN Communication Is Available With BCM

*: For models with steering lock unit

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 and daytime run-

ning light relay for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is
turned OFF.

FRONT WIPER PROTECTION FUNCTION

IPDM E/R detects front wiper stop position by a front wiper stop position signal.

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 lamp
• License plate lamp
• Illumination
• Tail lamp
• Side marker lamp

• Turns ON the tail lamp relay and daytime running light relay when the ignition switch is

turned ON

• Turns OFF the tail lamp relay and daytime running light relay when the ignition switch is

turned OFF

Front wiper motor

• 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 AUTO mode and the front wiper motor
is operating.

• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe

control is activated while front wiper motor is operated and wiper stop in the other than
stop position.

Front fog lamp

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

Ignition relay ON normal

—

OFF

Ignition relay OFF normal

—

OFF

Ignition relay ON stuck

• Detects DTC “B2098: IGN RELAY

ON”

• Turns ON the tail lamp relay and

daytime running light relay for 10
minutes

OFF

Ignition relay OFF stuck

Detects DTC “B2099: IGN RELAY
OFF”

2012 M

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PCS

SYSTEM

PCS-9

< SYSTEM DESCRIPTION >

[IPDM E/R]

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.

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.

POWER CONTROL SYSTEM

POWER CONTROL SYSTEM : System Diagram

INFOID:0000000006887694

POWER CONTROL SYSTEM : System Description

INFOID:0000000006887695

COOLING FAN CONTROL

IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of
the cooling fan speed request signal received from ECM via CAN communication. Refer to

EC-64, "COOLING

FAN CONTROL : System Diagram"

(VQ37VHR) or

EC-1017, "COOLING FAN CONTROL : System Diagram"

(VK56VD).

ALTERNATOR CONTROL

IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of
the power generation command value signal received from ECM via CAN communication. Refer to

CHG-8,

"POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM : System Diagram"

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM : System Diagram

INFOID:0000000006887696

Ignition switch

Front wiper switch

Front wiper stop position signal

OFF

The front wiper stop position signal (stop position) cannot be input for 10 seconds.

The front wiper stop position signal does not change for 10 seconds.

JSMIA0004GB

JPMIA0952GB

2012 M

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PCS-10

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

SIGNAL BUFFER SYSTEM : System Description

INFOID:0000000006887697

• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via

CAN communication (only for models with VQ37VHR engine). Refer to

MWI-15, "OIL PRESSURE WARN-

ING LAMP : System Diagram"

• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN commu-

nication. Refer to

SEC-10, "Hood Switch"

• IPDM E/R receives the rear window defogger control signal from BCM via CAN communication and trans-

mits it to ECM and AV control unit via CAN communication. Refer to

DEF-5, "System Diagram"

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM : System Diagram

INFOID:0000000007153254

POWER CONSUMPTION CONTROL SYSTEM : System Description

INFOID:0000000006887699

OUTLINE

• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-

ing to the vehicle status.

• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-

munication.

Normal mode (wake-up)

- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.

Low power consumption mode (sleep)

- Low power consumption control is active.
- CAN transmission is stopped.

SLEEP MODE ACTIVATION

• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the

conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.

- Outputting signals to actuators
- Switches or relays operating
- Hood switch status is kept 50 ms or less.
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep

wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

JMMIA0427GB

2012 M

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PCS-12

< SYSTEM DESCRIPTION >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

DIAGNOSIS SYSTEM (IPDM E/R)

Diagnosis Description

INFOID:0000000006887700

AUTO ACTIVE TEST

Description

In auto active test, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp (only for models with VQ37VHR engine)
• Front wiper (LO, HI)
• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp
• Front fog lamp
• Headlamp (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan (cooling fan control module)

Operation Procedure

CAUTION:

Wiper arm interferes with hood when wiper is operated while wiper arm is in the raised position.
Always perform auto active test without setting wiper arm in the raised position. Always pour water on
front windshield glass in advance to auto active test so that damage on front windshield glass surface
is prevented.
NOTE:
Never perform auto active test in the following condition.
• Engine is running
• CONSULT is connected

Turn the ignition switch OFF.

Turn the ignition switch ON, and within 20 seconds, press the front door switch (driver side) 10 times.
Then turn the ignition switch OFF.
NOTE:
• Close passenger door.
• Within 5 seconds after ignition switch is turned to the ON position and when driver door switch is

pressed 6 times or more within 4 seconds, self-diagnosis function for BOSE amp. activates and speaker
sounds. After waiting for 5 seconds or more after ignition switch is turned to the ON position and when
driver door switch is operated, self-diagnosis function for BOSE amp. does not activate.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
NOTE:
Engine starts when ignition switch is turned ON while brake pedal is depressed.

The oil pressure warning lamp starts blinking when the auto active test starts.

After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:
• When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
• When auto active test is not activated, door switch may be the cause. Check door switch. Refer to

DLK-60,

"Component Function Check"

Inspection in Auto Active Test

When auto active test is actuated, the following 6 steps are repeated 3 times.

Operation
sequence

Inspection location

Operation

Oil pressure warning lamp
(only for models with VQ37VHR engine)

Blinks continuously during operation of auto active test

Front wiper motor

LO for 5 seconds

→

HI for 5 seconds

2012 M

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PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-13

< SYSTEM DESCRIPTION >

[IPDM E/R]

*: Outputs duty ratio of 50% for 5 seconds

→

duty ratio of 100% for 5 seconds on the cooling fan control module.

Concept of auto active test

• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-

tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.

• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis chart in auto active test

• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp
• Front fog lamp

10 seconds

Headlamp

• LO 10 seconds
• HI ON

⇔

OFF 5 times

A/C compressor (magnet clutch)

⇔

OFF 5 times

Cooling fan

MID for 5 seconds

→

HI for 5 seconds

Operation
sequence

Inspection location

Operation

JMMIA0374GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate

• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp
• Front fog lamp
• Headlamp (HI, LO)
• Front wiper motor

Perform auto active test.
Does the applicable system op-
erate?

YES

BCM signal input circuit

• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between

IPDM E/R and applicable system

• IPDM E/R

A/C compressor does not operate

Perform auto active test.
Does the magnet clutch oper-
ate?

YES

• Combination meter signal input cir-

cuit

• CAN communication signal be-

tween Combination meter and ECM

• CAN communication signal be-

tween ECM and IPDM E/R

• Magnet clutch
• Harness or connector between

IPDM E/R and magnet clutch

• IPDM E/R

2012 M

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PCS-14

< SYSTEM DESCRIPTION >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

CONSULT Function (IPDM E/R)

INFOID:0000000006887701

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with IPDM E/R.

SELF DIAGNOSTIC RESULT

Refer to

PCS-25, "DTC Index"

DATA MONITOR

Monitor item

Oil pressure warning lamp does not operate
(only for models with VQ37VHR engine)

Perform auto active test.
Does the oil pressure warning
lamp blink?

YES

• Harness or connector between

IPDM E/R and oil pressure switch

• Oil pressure switch
• IPDM E/R

• CAN communication signal be-

tween IPDM E/R and BCM

• CAN communication signal be-

tween BCM and Combination meter

• Combination meter

Cooling fan does not operate

Perform auto active test.
Does the cooling fan operate?

YES

• ECM signal input circuit
• CAN communication signal be-

tween ECM and IPDM E/R

• Cooling fan
• Harness or connector between

cooling fan and cooling fan control
module

• Cooling fan control module
• Harness or connector between

IPDM E/R and cooling fan control
module

• Cooling fan relay
• Harness or connector between

IPDM E/R and cooling fan relay

• IPDM E/R

Symptom

Inspection contents

Possible cause

Diagnosis mode

Description

Ecu Identification

Allows confirmation of IPDM E/R part number.

Self Diagnostic Result

Displays the diagnosis results judged by IPDM E/R.

Data Monitor

Displays the real-time input/output data from IPDM E/R input/output data.

Active Test

IPDM E/R can provide a drive signal to electronic components to check their operations.

CAN Diag Support Monitor

The results of transmit/receive diagnosis of CAN communication can be read.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

RAD FAN REQ
[%]

Displays the value of the cooling fan speed signal received from ECM via CAN com-
munication.

AC COMP REQ
[Off/On]

Displays the status of the A/C compressor request signal received from ECM via
CAN communication.

TAIL&CLR REQ
[Off/On]

Displays the status of the position light request signal received from BCM via CAN
communication.

HL LO REQ
[Off/On]

Displays the status of the low beam request signal received from BCM via CAN com-
munication.

HL HI REQ
[Off/On]

Displays the status of the high beam request signal received from BCM via CAN
communication.

FR FOG REQ
[Off/On]

Displays the status of the front fog light request signal received from BCM via CAN
communication.

2012 M

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PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-15

< SYSTEM DESCRIPTION >

[IPDM E/R]

ACTIVE TEST

Test item

FR WIP REQ
[Stop/1LOW/Low/Hi]

Displays the status of the front wiper request signal received from BCM via CAN
communication.

WIP AUTO STOP
[STOP P/ACT P]

Displays the status of the front wiper stop position signal judged by IPDM E/R.

WIP PROT
[Off/BLOCK]

Displays the status of the front wiper fail-safe operation judged by IPDM E/R.

IGN RLY1 -REQ
[Off/On]

Displays the status of the ignition switch ON signal received from BCM via CAN com-
munication.

IGN RLY
[Off/On]

Displays the status of the ignition relay judged by IPDM E/R.

PUSH SW
[Off/On]

Displays the status of the push-button ignition switch judged by IPDM E/R.

INTER/NP SW
[Off/On]

Displays the status of the shift position judged by IPDM E/R.

ST RLY CONT
[Off/On]

Displays the status of the starter relay status signal received from BCM via CAN
communication.

IHBT RLY -REQ
[Off/On]

Displays the status of the starter control relay signal received from BCM via CAN
communication.

ST/INHI RLY
[Off/ ST /INHI/UNKWN]

Displays the status of the starter relay and starter control relay judged by IPDM E/R.

DETENT SW
[Off/On]

Displays the status of the A/T shift selector (detention switch) judged by IPDM E/R.

S/L RLY -REQ
[Off/On]

Displays the status of the steering lock relay request received from BCM via CAN
communication.
NOTE:
For models without steering lock unit, this item is not monitored.

S/L STATE
[LOCK/UNLOCK/UNKWN]

Displays the status of the steering lock judged by IPDM E/R.
NOTE:
For models without steering lock unit, this item is not monitored.

DTRL REQ
[Off/On]

Displays the status of the daytime running light request signal received from BCM via
CAN communication.
NOTE:
This item is monitored only on the vehicle with daytime running light system.

OIL P SW
[Open/Close]

Displays the status of the oil pressure switch judged by IPDM E/R.
NOTE:
This item is monitored only on the vehicle with VQ37VHR engine models.

HOOD SW
[Off/On]

Displays the status of the hood switch judged by IPDM E/R.

HL WASHER REQ
[Off/On]

NOTE:
This item is indicated, but not monitored.

THFT HRN REQ
[Off/On]

Displays the status of the theft warning horn request signal received from BCM via
CAN communication.

HORN CHIRP
[Off/On]

Displays the status of the horn reminder signal received from BCM via CAN commu-
nication.

CRNRNG LMP REQ
[Off/On]

NOTE:
This item is indicated, but not monitored.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

2012 M

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PCS-16

< SYSTEM DESCRIPTION >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

Test item

Operation

Description

CORNERING LAMP

Off

NOTE:
This item is indicated, but cannot be tested.

HORN

Operates horn relay for 20 ms.

FRONT WIPER

Off

OFF

Operates the front wiper relay.

Operates the front wiper relay and front wiper high relay.

MOTOR FAN

OFF

Transmits 50% pulse duty signal (PWM signal) to the cooling fan control module.

Transmits 75% pulse duty signal (PWM signal) to the cooling fan control module.

Transmits 100% pulse duty signal (PWM signal) to the cooling fan control mod-
ule.

HEAD LAMP WASHER

NOTE:
This item is indicated, but cannot be tested.

EXTERNAL LAMPS

Off

OFF

TAIL

Operates the tail lamp relay and the daytime running light relay.

Operates the headlamp low relay.

Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.

Fog

Operates the front fog lamp relay.

2012 M

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PCS

IPDM E/R

PCS-17

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

ECU DIAGNOSIS INFORMATION

IPDM E/R

Reference Value

INFOID:0000000006887702

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

RAD FAN REQ

Engine idle speed

Changes depending on engine coolant
temperature, air conditioner operation
status, vehicle speed, etc.

0 – 100 %

AC COMP REQ

Engine running

A/C switch OFF

Off

A/C switch ON
(compressor is operating)

TAIL&CLR REQ

Lighting switch OFF

Off

• Lighting switch 1ST, 2ND or AUTO (light is illuminated)
• Daytime running light system is operated

HL LO REQ

Lighting switch OFF

Off

Lighting switch 2ND or AUTO (light is illuminated)

Daytime running light system is operated

HL HI REQ

Lighting switch 2ND or
AUTO (light is illuminated)

Lighting switch other than HI and PASS

Off

Lighting switch HI or PASS

FR FOG REQ

Lighting switch 2ND or
AUTO (light is illuminated)

Front fog lamp switch OFF

Off

Lighting switch HI or PASS

Front fog lamp switch ON

FR WIP REQ

Ignition switch ON

Front wiper switch OFF

Stop

Front wiper switch AUTO

1LOW

Front wiper switch LO

Low

Front wiper switch HI

WIP AUTO STOP

Ignition switch ON

Front wiper stop position

STOP P

Any position other than front wiper stop
position

ACT P

WIP PROT

Ignition switch ON

Front wiper operates normally

Off

Front wiper stops at fail-safe operation

BLOCK

IGN RLY1 -REQ

Ignition switch OFF or ACC

Off

Ignition switch ON

IGN RLY

Ignition switch OFF or ACC

Off

Ignition switch ON

PUSH SW

Release the push-button ignition switch

Off

Press the push-button ignition switch

INTER/NP SW

Ignition switch ON

Selector lever in any position other
than P or N

Off

Selector lever in P or N position

ST RLY CONT

Ignition switch ON

Off

At engine cranking

IHBT RLY -REQ

Ignition switch ON

Off

At engine cranking

2012 M

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PCS-18

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

ST/INHI RLY

Ignition switch ON

Off

At engine cranking

INHI

→

The status of starter relay or starter control relay cannot be recognized by the
battery voltage malfunction, etc. when the starter relay is ON and the starter
control relay is OFF

UNKWN

DETENT SW

Ignition switch ON

• Press the selector button with selec-

tor lever in P position

• Selector lever in any position other

than P

Off

Release the selector button with selector lever in P position

S/L RLY -REQ
NOTE:
For models without steering
lock unit, this item is not mon-
itored.

None of the conditions below are present

Off

• Open the driver door after the ignition switch is turned OFF (for a few sec-

onds)

• Press the push-button ignition switch when the steering lock is activated

S/L STATE
NOTE:
For models without steering
lock unit, this item is not mon-
itored.

Steering lock is activated

LOCK

Steering lock is deactivated

UNLOCK

[DTC: B210A] is detected

UNKWN

DTRL REQ

Daytime running light system is not operated

Off

Any of the condition below
• Daytime running light system is operated
• Light switch 1ST, 2ND or AUTO (light is illuminated)

OIL P SW

Ignition switch OFF or ACC

Open

Ignition switch ON (engine running)

Ignition switch ON (engine stopped)

HOOD SW

Close the hood

Off

Open the hood

HL WASHER REQ

NOTE:
This item is indicated, but not monitored.

Off

THFT HRN REQ

Not operation

Off

• Panic alarm is activated
• Theft warning alarm is activated

HORN CHIRP

Not operation

Off

Door locking with Intelligent Key (horn chirp mode)

CRNRNG LMP REQ

NOTE:
This item is indicated, but not monitored.

Off

Monitor Item

Condition

Value/Status

2012 M

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Infiniti M (2012 year). Manual - part 1