Infiniti QX56 (JA60). Manual - part 173

 

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Infiniti QX56 (JA60). Manual - part 173

 

 

CCS-28

< COMPONENT DIAGNOSIS >

DTC 45 BRAKE SW/STOP L SW

DTC 45 BRAKE SW/STOP L SW

DTC 45 BRAKE SW/STOP L SW

INFOID:0000000005145991

Regarding Wiring Diagram information, refer to 

CCS-48, "Wiring Diagram"

.

1.

ECK CONNECTORS FOR ICC UNIT

1. Turn ignition switch OFF.

2. Disconnect ICC unit connectors and connect them securely again. Erase DTC, then perform self-diagno-

sis of ICC system again.

Does the DTC reset?

YES

>> • Poor connector connection.

• Check connectors. Check connectors housing for disconnected, loose, bent, and collapsed ter-

minals. If any malfunction is detected, repair as necessary. Erase DTC and perform ICC system

running test. Refer to 

CCS-8, "ACTION TEST : ICC System Running Test"

.

NO

>> GO TO 2

2.

CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH

With data monitor, check if “STOP LAMP SW” and “BRAKE SW” are operating normally. 
Do the monitor items display properly?

YES

>> Replace ICC unit. Refer to 

CCS-71, "ICC Unit"

. Erase DTC and perform ICC system running test.

Refer to 

CCS-8, "ACTION TEST : ICC System Running Test"

 .

NO

>> • BRAKE SW: GO TO 3

• STOP LAMP SW: GO TO 5

3.

ICC BRAKE SWITCH INSTALLATION AND ADJUSTMENT INSPECTION

Check ICC brake switch for proper installation and adjust if necessary.
Does ICC brake switch operate normally?

YES

>> GO TO 4

NO

>> After adjustment, erase DTC and perform ICC system running test. Refer to 

CCS-8, "ACTION

TEST : ICC System Running Test"

 .

4.

CHECK ICC BRAKE SWITCH

Check ICC brake switch.
Does the ICC brake switch check OK?

YES

>> Replace ICC unit. Refer to 

CCS-71, "ICC Unit"

. Erase DTC and perform ICC system running test.

Refer to 

CCS-8, "ACTION TEST : ICC System Running Test"

NO

>> Replace ICC brake switch. Erase DTC and perform ICC system running test. Refer to 

CCS-8,

"ACTION TEST : ICC System Running Test"

5.

CHECK STOP LAMP ILLUMINATION

Check stop lamp illumination.
Do the stop lamps operate normally?

YES

>> GO TO 6

NO

>> • Check stop lamp circuit.

• Erase DTC and perform ICC system running test. Refer to 

CCS-8, "ACTION TEST : ICC Sys-

tem Running Test"

6.

CHECK ICC BRAKE HOLD RELAY

CCS

DTC 45 BRAKE SW/STOP L SW

CCS-29

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

1. Turn ignition switch OFF.

2. Remove ICC brake hold relay.

3. Check continuity between ICC brake hold relay terminals.

Are continuity results as specified?

YES

>> GO TO 7

NO

>> Replace ICC brake hold relay. Erase DTC and perform

ICC system running test. Refer to 

CCS-8, "ACTION

TEST : ICC System Running Test"

.

7.

CHECK ICC BRAKE HOLD RELAY CIRCUIT

1. Disconnect ICC unit and stop lamp switch connectors.

2. Check continuity between ICC unit harness connector (A) B17

terminal 38 and ICC brake hold relay harness connector (B)

E134 terminal 6.

3. Check continuity between ICC unit harness connector (A) B17

terminal 38 and stop lamp switch harness connector (C) E38 ter-

minal 4.

Are continuity test results as specified?

YES

>> Replace ICC unit. Refer to 

CCS-71, "ICC Unit"

. Erase DTC and perform ICC system running test.

Refer to 

CCS-8, "ACTION TEST : ICC System Running Test"

 . 

NO

>> • Repair harness between ICC unit and ICC brake hold relay or stop lamp switch.

• Erase DTC and perform ICC system running test. Refer to 

CCS-8, "ACTION TEST : ICC Sys-

tem Running Test"

.

7 - 6

Continuity should not exist.

4 - 3

Continuity should exist.

SKIA6651E

Continuity should exist.

Continuity should exist.

ALOIA0007ZZ

CCS-30

< COMPONENT DIAGNOSIS >

DTC 46 OPERATION SW CIRC

DTC 46 OPERATION SW CIRC

DTC 46 OPERATION SW CIRC

INFOID:0000000005145992

Regarding Wiring Diagram information, refer to 

CCS-48, "Wiring Diagram"

.

1.

CHECK ECM CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect ECM connector and connect it securely again. Erase DTC, then perform self-diagnosis of ICC

system again.

Does the DTC reset?

YES

>> • Poor connector connection.

• Check connector. Check connector housing for disconnected, loose, bent, and collapsed termi-

nals. If any malfunction is detected, repair as as necessary. Erase DTC and perform ICC system

running test. Refer to 

CCS-8, "ACTION TEST : ICC System Running Test"

.

NO

>> GO TO 2

2.

CHECK ICC STEERING SWITCH

Check ICC steering switch.
Does the ICC steering switch check OK?

YES

>> GO TO 3

NO

>> Replace ICC steering switch assembly. Refer to 

CCS-73, "Removal and Installation"

. Erase DTC

and perform ICC system running test. Refer to 

CCS-8, "ACTION TEST : ICC System Running

Test"

.

3.

CHECK ICC STEERING SWITCH SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM and spiral cable connectors.

3. Check continuity between ECM harness connectors E16 and

F54 terminals 67, 99 and spiral cable harness connector M30

terminals 33, 34.

Does continuity exist?

YES

>> GO TO 4

NO

>> • Repair harness between ECM and spiral cable.

• Erase DTC and perform ICC system running test. Refer to 

CCS-8, "ACTION TEST : ICC Sys-

tem Running Test"

4.

CHECK ICC STEERING SWITCH SIGNAL CIRCUIT

1. Disconnect remaining spiral cable connector.

2. Check continuity between spiral cable (A) (to vehicle) terminals

33, 34 and spiral cable (B) (to switch) terminals 14,15.

Does continuity exist?

YES

>> Replace ECM. Erase DTC and perform ICC system run-

ning test. Refer to 

CCS-8, "ACTION TEST : ICC System

Running Test"

NO

>> • Replace spiral cable. Refer to 

SR-7, "Removal and

Installation"

.

67 - 33, 99 - 34

Continuity should exist.

WKIA1928E

34 - 14, 33 - 15

Continuity should exist.

WKIA4572E

CCS

DTC 46 OPERATION SW CIRC

CCS-31

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

• Erase DTC and perform ICC system running test. Refer to 

CCS-8, "ACTION TEST : ICC Sys-

tem Running Test"

 

 

 

 

 

 

 

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