Infiniti QX56 (JA60). Manual — part 839

SEC-2

B2191 DIFFERENCE OF KEY . . . . . . ..

34

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

34

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

34

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

34

B2192 ID DISCORD, IMMU-ECM . . . . . ..

35

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

35

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

35

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

35

B2193 CHAIN OF ECM-IMMU . . . . . . ...

37

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

37

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

37

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

37

B2194 ID DISCORD IMMU-I-KEY . . . . . .

38

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

38

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

38

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

38

B2552 INTELLIGENT KEY . . . . . . . .

39

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

39

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

39

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

39

Special Repair Requirement . . . . . . . . ...

39

B2590 ID DISCORD BCM-I-KEY . . . . . ...

40

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

40

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

40

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

40

P1610 LOCK MODE . . . . . . . . . . ..

41

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

41

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

41

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

41

P1611 ID DISCORD, IMMU-ECM . . . . . ..

42

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

42

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

42

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

42

P1612 CHAIN OF ECM-IMMU . . . . . . ...

44

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

44

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

44

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

44

P1614 CHAIN OF IMMU-KEY . . . . . . ...

45

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

45

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

45

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

45

P1615 DIFFRENCE OF KEY . . . . . . . .

48

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

48

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

48

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

48

POWER SUPPLY AND GROUND CIRCUIT . .

49

INTELLIGENT KEY UNIT . . . . . . . . . . .

49

INTELLIGENT KEY UNIT : Diagnosis Procedure ...

49

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

49

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

49

KEY CYLINDER SWITCH . . . . . . . . .

51

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

51

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

51

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

51

IGNITION KNOB SWITCH . . . . . . . .

53

Ignition Knob Switch Check . . . . . . . . .

53

HOOD SWITCH . . . . . . . . . . . . .

55

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

55

HORN FUNCTION . . . . . . . . . . . .

57

Symptom Table . . . . . . . . . . . . . ...

57

VEHICLE SECURITY INDICATOR . . . . ...

58

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

58

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

58

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

58

ECU DIAGNOSIS . . . . . . . . . ...

60

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

60

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

60

Terminal Layout . . . . . . . . . . . . . ..

63

Physical Values . . . . . . . . . . . . . ...

63

Wiring Diagram - VEHICLE SECURITY SYSTEM ...

69

Wiring Diagram - IVIS . . . . . . . . . . . .

80

Fail Safe . . . . . . . . . . . . . . . . .

87

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

88

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

88

INTELLIGENT KEY UNIT . . . . . . . . ..

90

Reference Value - Intelligent Key Unit . . . . .

90

Reference Value - Steering Lock Solenoid . . . .

93

Wiring Diagram - INTELLIGENT KEY SYSTEM/
ENGINE START FUNCTION - . . . . . . . .

94

Fail Safe . . . . . . . . . . . . . . . ...

104

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

105

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

105

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

106

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

106

Terminal Layout . . . . . . . . . . . . .

108

Physical Values . . . . . . . . . . . . . .

109

Fail Safe . . . . . . . . . . . . . . . ...

113

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

114

SYMPTOM DIAGNOSIS . . . . . . ...

115

INTELLIGENT KEY SYSTEM/ENGINE
START FUNCTION SYMPTOMS . . . . . .

115

Symptom Table . . . . . . . . . . . . . .

115

VEHICLE SECURITY SYSTEM SYMPTOMS ..

116

Symptom Table . . . . . . . . . . . . . .

116

INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS SYMPTOMS . . . . . . . . . . ...

117

Symptom Table . . . . . . . . . . . . . .

117

SEC-3

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

118

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

118

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

118

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

118

ON-VEHICLE REPAIR . . . . . . . ...

120

INTELLIGENT KEY UNIT . . . . . . . ...

120

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

120

SEC-4

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000005147063

OVERALL SEQUENCE

DETAILED FLOW

ALKIA0538GB

DIAGNOSIS AND REPAIR WORKFLOW

SEC-5

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

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1.

GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when

the incident/malfunction occurred).

>> GO TO 2

2.

CHECK DTC

1. Check DTC for Intelligent Key unit and BCM.

2. Perform the following procedure if DTC is displayed.

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3. Check related service bulletins for information.
Is any symptom described and any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3

Symptom is described, DTC is not displayed>>GO TO 4

Symptom is not described, DTC is displayed>>GO TO 5

3.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real-time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5

4.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real-time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6

5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

If two or more DTCs are detected, refer to

SEC-105, "DTC Inspection Priority Chart"

(Intelligent Key unit),

SEC-88, "DTC Inspection Priority Chart"

(BCM) and determine trouble diagnosis order.

Is DTC detected?

YES

>> GO TO 8

NO

>> Refer to

GI-38, "Intermittent Incident"

.

6.

PERFORM BASIC INSPECTION

Perform Basic Inspection. Refer to

SEC-7, "Basic Inspection"

.

>> GO TO 7

7.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to Symptom Table based on the confirmed symptom in step 4.

>> GO TO 8

8.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure is described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.

>> GO TO 9