Infiniti M (2012 year). Manual

PCS

IPDM E/R

PCS-19

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

TERMINAL LAYOUT

PHYSICAL VALUES

JSMIA0001ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

(W)

Ground

Battery power supply

Input

Ignition switch OFF

Battery voltage

(L)

Ground

Battery power supply

Input

Ignition switch OFF

Battery voltage

(W)

Ground

ECM relay power
supply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition
switch OFF)

Battery voltage

(P)

Ground

ECM relay power
supply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition
switch OFF)

Battery voltage

2012 M

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PCS-20

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

(R)

Ground

ECM relay power
supply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition
switch OFF)

Battery voltage

(Y)

Ground

Throttle control motor
relay power supply

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

0 V

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition
switch OFF)

Battery voltage

(L)

Ground

A/C relay power
supply

Output

Engine running

A/C switch OFF

0 V

A/C switch ON
(A/C compressor is oper-
ating)

Battery voltage

(V)

Ground

ECM power supply

Output

Ignition switch OFF

Battery voltage

(B)

Ground

—

Ignition switch ON

0 V

(G)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(GR)

Ground

Fuel pump relay power
supply

Output

Approximately 1 second or more after turning
the ignition switch ON

0 V

• Approximately 1 second after turning the

ignition switch ON

• Engine running

Battery voltage

(V)

Ground

Front wiper stop posi-
tion

Input

Ignition switch
ON

Front wiper stop position

0 V

Any position other than
front wiper stop position

12 V

(Y)

Ground

Ignition relay monitor

Input

Ignition switch OFF or ACC

Battery voltage

Ignition switch ON

0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

2012 M

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PCS

IPDM E/R

PCS-21

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

(BR)

Ground

Power generation
command signal

Output

Ignition switch ON

6.3 V

40% is set on “ACTIVE TEST”, “ALTERNA-
TOR DUTY” of “ENGINE”

3.8 V

80% is set on “ACTIVE TEST”, “ALTERNA-
TOR DUTY” of “ENGINE”

1.4 V

(SB)

Ground

Daytime running light
relay control

Output

• Parking lamp
• License plate

lamp

• Tail lamp

Turned OFF

Battery voltage

Turned ON

0 V

(O)

Ground

Hood switch

Input

Close the hood

12 V

Open the hood

0 V

(LG)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(BR)

Ground

Push-button ignition
switch

Input

Press the push-button ignition switch

0 V

Release the push-button ignition switch

12 V

(W)

Ground

Starter relay control

Input

Ignition switch
ON

Selector lever in any posi-
tion other than P or N

0 V

Selector lever P or N

12 V

32*

(L)

Ground

Steering lock unit
condition-1

Input

Steering lock is activated

0 V

Steering lock is deactivated

12 V

34*

(P)

Ground

Steering lock unit
condition-2

Input

Steering lock is activated

12 V

Steering lock is deactivated

0 V

(GR)

Ground

Battery power supply

Input

Ignition switch OFF

Battery voltage

(P)

—

CAN-L

Input/

Output

—

(L)

—

CAN-H

Input/

Output

—

(B)

Ground

—

Ignition switch ON

0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

JPMIA0001GB

JPMIA0002GB

JPMIA0003GB

2012 M

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PCS-22

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

(V)

Ground

Cooling fan relay 1
control

Input

Ignition switch OFF or ACC

0 V

Ignition switch ON

0.7 V

(SB)

Ground

A/T shift selector
(Detention switch)

Input

Ignition switch
ON

• Press the selector but-

ton (selector lever P)

• Selector lever in any po-

sition other than P

12 V

Release the selector but-
ton (selector lever P)

0 V

(GR)

Ground

Horn relay control

Input

The horn is deactivated

Battery voltage

The horn is activated

0 V

(G)

Ground

Vehicle security horn
relay control

Input

The horn is deactivated

Battery voltage

The horn is activated

0 V

(BR)

Ground

Starter relay control

Input

Ignition switch
ON

Selector lever in any posi-
tion other than P or N

0 V

Selector lever P or N

12 V

49*

(BR)

Ground

Steering lock unit
power supply

Output

Ignition switch
OFF

A few seconds after open-
ing the driver door

Battery voltage

Ignition switch
LOCK

Press the push-button ig-
nition switch

Battery voltage

Ignition switch ACC or ON

0 V

(O)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(G)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(L)

Ground

Front wiper HI
(ground)

Output

Ignition switch
ON

Front wiper switch OFF or
HI

0 V

(P)

Ground

Front wiper LO

Output

Ignition switch
ON

Front wiper switch OFF

0 V

Front wiper switch LO

Battery voltage

(R)

Ground

Illumination

Output

Lighting switch OFF

0 V

Lighting switch 1ST

Battery voltage

(GR)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(V)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(BR)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(LG)

Ground

ECM relay control

Output

Ignition switch OFF
(More than a few seconds after turning igni-
tion switch OFF)

Battery voltage

• Ignition switch ON
• Ignition switch OFF

(For a few seconds after turning ignition
switch OFF)

0 – 1.5 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

2012 M

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PCS

IPDM E/R

PCS-23

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

(O)

Ground

Throttle control motor
relay control

Output

Ignition switch ON

→

OFF

0 – 1.0 V

↓

Battery voltage

↓

0 V

Ignition switch ON

0 – 1.0 V

(G)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

(R)

Ground

Ignition relay power
supply

Output

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

75*

(Y)

Ground

Oil pressure switch

Input

Ignition switch
ON

Engine stopped

0 V

Engine running

12 V

(B)

Ground

Fuel pump relay
control

Output

• Approximately 1 second after turning the

ignition switch ON

• Engine running

0 – 1.0 V

Approximately 1 second or more after turning
the ignition switch ON

Battery voltage

(W)

Ground

Starter motor

Output

At engine cranking

Battery voltage

(R)

Ground

Headlamp LO (RH)

Output

Lighting switch OFF

0 V

Lighting switch 2ND or AUTO (light is illumi-
nated)

Battery voltage

Daytime running light operated

(W)

Ground

Headlamp LO (LH)

Output

Lighting switch OFF

0 V

Lighting switch 2ND or AUTO (light is illumi-
nated)

Battery voltage

Daytime running light operated

(G)

Ground

Front fog lamp (RH)

Output

Lighting switch
2ND or AUTO
(light is illumi-
nated)

Front fog lamp switch ON

Battery voltage

Lighting switch HI or PASS

0 V

Front fog lamp switch OFF

(L)

Ground

Front fog lamp (LH)

Output

Lighting switch
2ND or AUTO
(light is illumi-
nated)

Front fog lamp switch ON

Battery voltage

Lighting switch HI or PASS

0 V

Front fog lamp switch OFF

(O)

Ground

Front wiper motor
power supply

Output

Ignition switch ON

Battery voltage

(Y)

Ground

Headlamp HI (RH)

Output

Lighting switch
2ND or AUTO
(light is illumi-
nated)

Lighting switch HI or PASS

Battery voltage

Lighting switch other than
HI and PASS

0 V

(P)

Ground

Headlamp HI (LH)

Output

Lighting switch
2ND or AUTO
(light is illumi-
nated)

Lighting switch HI or PASS

Battery voltage

Lighting switch other than
HI and PASS

0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

2012 M

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PCS-24

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

IPDM E/R

: For models with VQ37VHR engine

: Models with steering lock unit

Fail-safe

INFOID:0000000007152865

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

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.

(R)

Ground

Wiper reverse relay

Input

Ignition switch OFF or ACC

0 V

Ignition switch ON

Battery voltage

Front wiper operates at LO

Battery voltage

Front wiper operates at HI

0 V

(V)

Ground

Cooling fan control

Output

Engine idling

0 – 5 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/

Output

−

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

2012 M

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PCS

IPDM E/R

PCS-25

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

• 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.
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.

DTC Index

INFOID:0000000006887704

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

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”

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.

CONSULT display

Fail-safe

Reference

No DTC is detected.
further testing
may be required.

—

U1000: CAN COMM CIRCUIT

PCS-29

B2098: IGN RELAY ON

PCS-30

B2099: IGN RELAY OFF

—

PCS-31

B2108: S/L RELAY ON*

—

SEC-106

B2109: S/L RELAY OFF*

—

SEC-107

B210A: S/L STATE SW*

—

SEC-108

B210B: START CONT RLY ON

—

SEC-110

2012 M

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PCS

U1000 CAN COMM CIRCUIT

PCS-29

< DTC/CIRCUIT DIAGNOSIS >

[IPDM E/R]

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000006887706

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to

LAN-35, "CAN COMMUNICATION SYSTEM : CAN Communica-

tion Signal Chart"

DTC Logic

INFOID:0000000006887707

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006887708

PERFORM SELF DIAGNOSTIC

Turn ignition switch ON and wait 2 seconds or more.

Check “Self Diagnostic Result” of “IPDM E/R” using CONSULT.

Is DTC “U1000” displayed?

YES

>> Refer to

LAN-25, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-44, "Intermittent Incident"

DTC

CONSULT display de-

scription

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When IPDM E/R cannot communicate CAN
communication signal continuously for 2
seconds or more

CAN communication system

2012 M

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PCS-30

< DTC/CIRCUIT DIAGNOSIS >

[IPDM E/R]

B2098 IGNITION RELAY ON STUCK

B2098 IGNITION RELAY ON STUCK

Description

INFOID:0000000006887709

• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-

munication.

• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/

h (2.5 MPH) or less.

• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5

MPH) or when an abnormal condition occurs in CAN communication from the unified meter and A/C
amp.(Emergency OFF)

- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times within 1.5 seconds.
NOTE:
The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch
is pressed.

DTC Logic

INFOID:0000000006887710

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006887711

PERFORM SELF DIAGNOSIS

Turn ignition switch ON.

Erase “Self Diagnostic Result” of “IPDM E/R” using CONSULT.

Turn ignition switch OFF, and wait 1 second or more.

Turn ignition switch ON.

Check “Self Diagnostic Result” of “IPDM E/R” using CONSULT.

Is DTC “B2098” displayed?

YES

>> Replace IPDM E/R. Refer to

PCS-33, "Removal and Installation"

>> Refer to

GI-44, "Intermittent Incident"

DTC

CONSULT display

description

DTC Detection Condition

Possible causes

B2098

IGN RELAY ON

The ignition relay ON is detected for 1 second at ignition switch OFF
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)

Ignition relay malfunction

2012 M

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PCS

B2099 IGNITION RELAY OFF STUCK

PCS-31

< DTC/CIRCUIT DIAGNOSIS >

[IPDM E/R]

B2099 IGNITION RELAY OFF STUCK

Description

INFOID:0000000006887712

• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-

munication.

• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/

h (2.5 MPH) or less.

• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5

MPH) or when an abnormal condition occurs in CAN communication from the unified meter and A/C
amp.(Emergency OFF)

DTC Logic

INFOID:0000000006887713

DTC DETECTION LOGIC

NOTE:

When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the “DTC: B2099” may be detected.

Diagnosis Procedure

INFOID:0000000006887714

PERFORM SELF DIAGNOSIS

Turn ignition switch ON.

Erase “Self Diagnostic Result” of “IPDM E/R” using CONSULT.

Turn ignition switch OFF.

Turn ignition switch ON.

Check “Self Diagnostic Result” of “IPDM E/R” using CONSULT.

Is “B2099” displayed?

YES

>> Replace IPDM E/R. Refer to

PCS-33, "Removal and Installation"

>> Refer to

GI-44, "Intermittent Incident"

DTC

CONSULT display

description

DTC Detection Condition

Possible causes

B2099

IGN RELAY OFF

The ignition relay OFF is detected for 1 second at ignition switch ON
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)

Ignition relay malfunction

2012 M

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PCS-32

< DTC/CIRCUIT DIAGNOSIS >

[IPDM E/R]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000006887715

CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible links are not blown.

Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

>> GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Turn the ignition switch OFF.

Disconnect IPDM E/R connector.

Check voltage between IPDM E/R harness connector and the ground.

Is the measurement value normal?

YES

>> GO TO 3.

>> Repair the harness or connector.

CHECK GROUND CIRCUIT

Check continuity between IPDM E/R harness connectors and the ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair the harness or connector.

Signal name

Fuses and fusible link No.

Battery power supply

D (80 A)

F (60 A)

H (30 A)

50 (15 A)

51 (15 A)

(+)

(

−

)

Voltage

(Approx.)

IPDM E/R

Connector

Terminal

Ground

Battery voltage

IPDM E/R

Ground

Continuity

Connector

Terminal

Existed

2012 M

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PCS

IPDM E/R

PCS-33

< REMOVAL AND INSTALLATION >

[IPDM E/R]

REMOVAL AND INSTALLATION

IPDM E/R

Exploded View

INFOID:0000000006887716

Removal and Installation

INFOID:0000000006887717

CAUTION:

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

REMOVAL

Disconnect the battery cable from the negative terminal.

Remove the cowl top cover (RH). Refer to

EXT-21, "Removal

and Installation"

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

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

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

INSTALLATION

IPDM E/R cover A

IPDM E/R

IPDM E/R cover B

JMMIA0370ZZ

JPMIA0059ZZ

JPMIA0060ZZ

2012 M

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Infiniti M (2012 year). Manual - part 2