Infiniti FX35, FX50 (S51). Manual — part 1411

PCS-2

Component Description . . . . . . . . . . .

41

DIAGNOSIS SYSTEM (BCM) . . . . . . .

42

COMMON ITEM . . . . . . . . . . . . . ....

42

COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) . . . . . . . . . . . . ....

42

INTELLIGENT KEY . . . . . . . . . . . . ...

43

INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) . . . . . . . . ...

43

DTC/CIRCUIT DIAGNOSIS . . . . . . .

47

U1000 CAN COMM CIRCUIT . . . . . . .

47

BCM . . . . . . . . . . . . . . . . . . ...

47

BCM : Description . . . . . . . . . . . . ...

47

BCM : DTC Logic . . . . . . . . . . . . ....

47

BCM : Diagnosis Procedure . . . . . . . . ...

47

IPDM E/R . . . . . . . . . . . . . . . . ...

47

IPDM E/R : Description . . . . . . . . . . ...

47

IPDM E/R : DTC Logic . . . . . . . . . . ....

47

IPDM E/R : Diagnosis Procedure . . . . . . ...

47

U1010 CONTROL UNIT (CAN) . . . . . . .

49

BCM . . . . . . . . . . . . . . . . . . ...

49

BCM : DTC Logic . . . . . . . . . . . . ....

49

BCM : Diagnosis Procedure . . . . . . . . ...

49

B2553 IGNITION RELAY . . . . . . . . ...

50

Description . . . . . . . . . . . . . . . ..

50

DTC Logic . . . . . . . . . . . . . . . ...

50

Diagnosis Procedure . . . . . . . . . . . ..

50

B260A IGNITION RELAY . . . . . . . . ..

52

Description . . . . . . . . . . . . . . . ..

52

DTC Logic . . . . . . . . . . . . . . . ...

52

Diagnosis Procedure . . . . . . . . . . . ..

52

B2614 ACC RELAY . . . . . . . . . . ...

54

Description . . . . . . . . . . . . . . . ..

54

DTC Logic . . . . . . . . . . . . . . . ...

54

Diagnosis Procedure . . . . . . . . . . . ..

54

Component Inspection . . . . . . . . . . ....

55

B2615 BLOWER RELAY CIRCUIT . . . . ...

56

Description . . . . . . . . . . . . . . . ..

56

DTC Logic . . . . . . . . . . . . . . . ...

56

Diagnosis Procedure . . . . . . . . . . . ..

56

Component Inspection . . . . . . . . . . ....

57

B2616 IGNITION RELAY CIRCUIT . . . . ...

58

Description . . . . . . . . . . . . . . . ..

58

DTC Logic . . . . . . . . . . . . . . . ...

58

Diagnosis Procedure . . . . . . . . . . . ..

58

Component Inspection . . . . . . . . . . ....

59

B2618 BCM . . . . . . . . . . . . . .

60

Description . . . . . . . . . . . . . . . ..

60

DTC Logic . . . . . . . . . . . . . . . ...

60

Diagnosis Procedure . . . . . . . . . . . ...

60

B261A PUSH-BUTTON IGNITION SWITCH . .

61

Description . . . . . . . . . . . . . . . ..

61

DTC Logic . . . . . . . . . . . . . . . ...

61

Diagnosis Procedure . . . . . . . . . . . ...

61

POWER SUPPLY AND GROUND CIRCUIT . .

63

BCM . . . . . . . . . . . . . . . . . . ...

63

BCM : Diagnosis Procedure . . . . . . . . .

63

PUSH-BUTTON IGNITION SWITCH . . . . .

64

Description . . . . . . . . . . . . . . . ..

64

Component Function Check . . . . . . . . ..

64

Diagnosis Procedure . . . . . . . . . . . ...

64

Component Inspection . . . . . . . . . . .

66

PUSH-BUTTON IGNITION SWITCH POSI-
TION INDICATOR . . . . . . . . . . . ..

67

Description . . . . . . . . . . . . . . . ..

67

Component Function Check . . . . . . . . ..

67

Diagnosis Procedure . . . . . . . . . . . ...

67

Component Inspection . . . . . . . . . . .

68

POWER DISTRIBUTION SYSTEM . . . . ...

69

Wiring Diagram - PDS (POWER DISTRIBUTION
SYSTEM) - . . . . . . . . . . . . . . . ..

69

ECU DIAGNOSIS INFORMATION . . . .

80

BCM (BODY CONTROL MODULE) . . . . ..

80

Reference Value . . . . . . . . . . . . . .

80

Wiring Diagram - BCM - . . . . . . . . . .

104

Fail-safe . . . . . . . . . . . . . . . .

110

DTC Inspection Priority Chart . . . . . . . .

113

DTC Index . . . . . . . . . . . . . . .

113

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) . . . .

116

Reference Value . . . . . . . . . . . . ...

116

Wiring Diagram - IPDM E/R - . . . . . . . .

123

Fail-safe . . . . . . . . . . . . . . . .

126

DTC Index . . . . . . . . . . . . . . .

128

PRECAUTION . . . . . . . . . . ...

129

PRECAUTIONS . . . . . . . . . . . .

129

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

129

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect . . . . . . . . .

129

SYMPTOM DIAGNOSIS . . . . . . ...

131

PUSH-BUTTON IGNITION SWITCH DOES
NOT OPERATE . . . . . . . . . . . .

131

Description . . . . . . . . . . . . . . .

131

Diagnosis Procedure . . . . . . . . . . . .

131

PCS

PCS-3

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

PUSH-BUTTON IGNITION SWITCH POSI-
TION INDICATOR DOES NOT ILLUMINATE ..

132

Diagnosis Procedure . . . . . . . . . . . .

132

REMOVAL AND INSTALLATION . . . .

133

PUSH BUTTON IGNITION SWITCH . . . ...

133

Removal and Installation . . . . . . . . . ...

133

PCS-4

< SYSTEM DESCRIPTION >

[IPDM E/R]

RELAY CONTROL SYSTEM

SYSTEM DESCRIPTION

RELAY CONTROL SYSTEM

System Diagram

INFOID:0000000005240626

System Description

INFOID:0000000005240627

IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.

CAUTION:

IPDM E/R integrated relays cannot be removed.

JPMIA1569GB

PCS

RELAY CONTROL SYSTEM

PCS-5

< SYSTEM DESCRIPTION >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

NOTE:

BCM controls the starter relay.

Component Parts Location

INFOID:0000000005240628

Control relay

Input/output

Transmit unit

Control part

Reference page

• Headlamp low relay
• Headlamp high relay

• Low beam request signal
• High beam request signal

BCM (CAN)

• Headlamp low
• Headlamp high

EXL-8

Front fog lamp relay

Front fog light request signal

BCM (CAN)

Front fog lamp

EXL-22

Tail lamp relay

Position light request signal

BCM (CAN)

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

EXL-27

Illuminations

INL-15

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

•

WW-5

(With rain sensor)

•

WW-9

(Without rain sensor)

Front wiper stop position sig-
nal

Front wiper motor

• Horn relay 1
• Horn relay 2

• Theft warning horn request

signal

• Horn reminder signal

BCM (CAN)

• Horn (low)
• Horn (high)

SEC-19

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

SEC-105

,

SEC-107

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-99

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-55

Ignition relay

Ignition switch ON signal

BCM (CAN)

Ignition relay

PCS-17

Vehicle speed signal

Unified meter and A/C
amp. (CAN)

Push-button ignition switch
signal

Push-button ignition
switch

JPMIA1089ZZ