Nissan Altima HL32 Hybrid. Manual - part 845

PCS

B2099 IGNITION RELAY OFF STUCK

PCS-21

< COMPONENT DIAGNOSIS >

[IPDM E/R]

C

D

E

F

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B

A

O

P

N

B2099 IGNITION RELAY OFF STUCK

Description

INFOID:0000000004219116

• 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 combination meter (Emer-

gency OFF)

- Press and hold the push-button ignition switch for 2 seconds or more.

- Press the push-button ignition switch 3 time 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:0000000004219117

DTC DETECTION LOGIC

Diagnosis Procedure

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1.

 PERFORM SELF DIAGNOSIS

1. Turn the ignition switch ON.

2. Erase “SELF-DIAG RESULTS”.

3. Turn ignition switch OFF.

4. Turn the ignition switch ON. Check “SELF-DIAG RESULTS” again.
Is “IGN RELAY OFF” displayed?

YES

>> Replace IPDM E/R.

NO

>> Refer to 

GI-42, "Intermittent Incident"

.

DTC

CONSULT-III dis-

play 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

PCS-22

< COMPONENT DIAGNOSIS >

[IPDM E/R]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000004219119

1.

 CHECK FUSES AND FUSIBLE LINK

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

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R.

3. Check voltage between IPDM E/R harness connector and

ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between IPDM E/R harness connectors and

ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

Terminal No.

Signal name

Fuses and fusible link No.

1, 2

Battery power supply

B, E, F

—

42

43

Terminals

Voltage (V)

(Approx.)

(+)

(

−)

IPDM E/R

Connector

Terminal

Ground

E16

1

Battery voltage

2

ALCIA0033ZZ

IPDM E/R

Ground

Continuity

Connector

Terminal

E18 (A)

12

Yes

E17 (B)

41

ALCIA0034ZZ

PCS

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

PCS-23

< ECU DIAGNOSIS >

[IPDM E/R]

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ECU DIAGNOSIS

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

Reference Value

INFOID:0000000004219120

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

RADFAN REQ

Engine idle speed

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

0 - 100 %

TAIL&CLR REQ

Lighting switch OFF

OFF

Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated)

ON

HL LO REQ

Lighting switch OFF

OFF

Lighting switch 2ND HI or AUTO (Light is illuminated)

ON

HL HI REQ

Lighting switch OFF

OFF

Lighting switch HI

ON

FR FOG REQ

Lighting switch 2ND or AUTO (Light 
is illuminated)

Front fog lamp switch OFF

OFF

• Front fog lamp switch ON
• Daytime light activated (Canada 

only)

ON

FR WIP REQ

Ignition switch ON

Front wiper switch OFF

STOP

Front wiper switch INT

1LOW

Front wiper switch LO

LOW

Front wiper switch HI

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 opera-
tion

BLOCK

IGN RLY1 -REQ

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

IGN RLY

Ignition switch OFF or ACC

OFF

Ignition switch ON

ON

PUSH SW

Release the push-button ignition switch

OFF

Press the push-button ignition switch

ON

DETENT SW

Ignition switch ON

• Press the selector button with 

CVT selector lever in P position

• CVT selector lever in any posi-

tion other than P

OFF

Release the CVT selector button with CVT selector lever in P position

ON

S/L RLY -REQ

None of the conditions below are present

OFF

• Open the front door LH after the ignition switch is turned OFF (for a few 

seconds)

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

ed

ON

PCS-24

< ECU DIAGNOSIS >

[IPDM E/R]

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

Terminal Layout

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TERMINAL LAYOUT

Physical Values

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PHYSICAL VALUES

S/L STATE

Steering lock is activated

LOCK

Steering lock is deactivated

UNLK

[DTC B210A] is detected

UNKWN

DTRL REQ

NOTE:
This item is displayed, but cannot be monitored.

OFF

OIL P SW

Ignition switch OFF, ACC or engine running

OPEN

Ignition switch ON

CLOSE

THFT HRN REQ

Not operated

OFF

• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS-

TEM

ON

HORN CHIRP

Not operated

OFF

Door locking with Intelligent Key (horn chirp mode)

ON

CRNRNG LMP REQ

NOTE:
This item is displayed, but cannot be monitored.

OFF

Monitor Item

Condition

Value/Status

ALMIA0128ZZ