Infiniti QX56 (Z62). Manual - part 208

CCS

C1A13 STOP LAMP RELAY

CCS-99

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

YES

>> GO TO 9.

NO

>> Replace ICC brake hold relay. 

9.

PERFORM SELF-DIAGNOSIS OF ECM

1.

Connect all connectors again if the connectors are disconnected. 

2.

Turn ignition switch ON.

3.

Perform “All DTC Reading”. 

4.

Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to 

EC-98, "DTC Index"

.

Is any DTC detected?

YES

>> Repair or replace the malfunctioning parts identified by the self-diagnosis result. 

NO

>> Replace ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

10.

CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Remove ICC brake hold relay. 

3.

Check the voltage between ICC brake hold relay harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace ICC brake hold relay power supply circuit. 

11.

CHECK HARNESS BETWEEN AND ICC BRAKE HOLD RELAY AND ADAS CONTROL UNIT

1.

Disconnect ADAS control unit connectors. 

2.

Check for continuity between ICC brake hold relay harness connector and ADAS control unit harness
connector. 

3.

Check for continuity between ADAS control unit harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair the harnesses or connectors.

12.

CHECK ADAS CONTROL UNIT STANDARD VOLTAGE

1.

Connect all connectors again if the connectors are disconnected. 

2.

Turn ignition switch ON.

3.

Perform “STOP LAMP” on “Active Test” of “ICC/ADAS”, and then check the voltage between ADAS con-
trol unit harness connector and ground. 

Terminal

Voltage

(Approx.)

(+)

(–)

ICC brake hold relay

Ground

Connector

Terminal

E64

1

Battery 
voltage

ICC brake hold relay

ADAS control unit

Continuity

Connector

Terminal

Connector

Terminal

E64

2

B61

5

Existed

ICC brake hold relay

Ground

Continuity

Connector

Terminal

E64

2

Not existed

CCS-100

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A13 STOP LAMP RELAY

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

13.

CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the voltage between ICC brake hold relay harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> Repair or replace ICC brake hold relay power supply circuit. 

14.

CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ECM

1.

Disconnect ECM, rear combination lamp, and high-mounted stop lamp connectors and remove ICC brake
hold relay.

2.

Check for continuity between ICC brake hold relay harness connector and ECM harness connector. 

3.

Check for continuity between ICC brake hold relay harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Repair the harnesses or connectors.

15.

CHECK ICC BRAKE HOLD RELAY

1.

Remove ICC brake hold relay. 

2.

Check ICC brake hold relay. Refer to 

CCS-102, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Replace ICC brake hold relay. 

16.

CHECK STOP LAMP SWITCH

Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ABS”. 

Terminal

Condition

Voltage

(Approx.)

(+)

(–)

ADAS control unit

Ground

Active Test 

item

“STOP LAMP”

Connector

Terminal

B61

5

Off

Battery 
voltage

On

0 V

Terminal

Voltage

(Approx.)

(+)

(–)

ICC brake hold relay

Ground

Connector

Terminal

E64

3

Battery 
voltage

ICC brake hold relay

ECM

Continuity

Connector

Terminal

Connector

Terminal

E64

5

E80

158

Existed

ICC brake hold relay

Ground

Continuity

Connector

Terminal

E64

5

Not existed

CCS

C1A13 STOP LAMP RELAY

CCS-101

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

Is the inspection result normal?

YES

>> GO TO 21.

NO

>> GO TO 17.

17.

CHECK STOP LAMP SWITCH INSTALLATION

1.

Turn ignition switch OFF.

2.

Check stop lamp switch for correct installation. Refer to 

BR-7, "Inspection and Adjustment"

. 

Is the inspection result normal?

YES

>> GO TO 18.

NO

>> Adjust stop lamp switch installation. Refer to 

BR-7, "Inspection and Adjustment"

. 

18.

CHECK STOP LAMP SWITCH

1.

Disconnect stop lamp switch connector. 

2.

Check stop lamp switch. Refer to 

CCS-93, "Component Inspection (Stop Lamp Switch)"

. 

Is the inspection result normal?

YES

>> GO TO 19.

NO

>> Replace stop lamp switch. 

19.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Connect stop lamp switch connector.

2.

Check the voltage between stop lamp switch harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 20.

NO

>> Repair or replace stop lamp switch power supply circuit. 

20.

CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT

(CONTROL UNIT)

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch, ABS actuator and electric unit (control unit) connectors. 

3.

Check for continuity between the stop lamp switch harness connector and the ABS actuator and electric
unit (control unit) harness connector. 

4.

Check for continuity between stop lamp switch harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 21.

NO

>> Repair the harnesses or connectors.

21.

PERFORM SELF-DIAGNOSIS OF ECM

1.

Connect all connectors again if the connectors are disconnected. 

Terminal

Voltage

(Approx.)

(+)

(–)

Stop lamp switch

Ground

Connector

Terminal

E115

3

Battery 
voltage

Stop lamp switch

ABS actuator and electric 

unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E115

4

E36

17

Existed

Stop lamp switch

Ground

Continuity

Connector

Terminal

E115

4

Not existed

CCS-102

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A13 STOP LAMP RELAY

2.

Turn ignition switch ON.

3.

Perform “All DTC Reading”. 

4.

Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to 

EC-98, "DTC Index"

.

Is any DTC detected?

YES

>> Repair or replace the malfunctioning parts identified by the self-diagnosis result. 

NO

>> GO TO 22.

22.

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

1.

Connect all connectors again if the connectors are disconnected. 

2.

Turn ignition switch ON.

3.

Perform “All DTC Reading”. 

4.

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. Refer to 

BRC-51, "DTC Index"

.

Is any DTC detected?

YES

>> Repair or replace the malfunctioning parts identified by the self-diagnosis result. 

NO

>> Replace ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

Component Inspection

INFOID:0000000006224325

1.

CHECK ICC BRAKE HOLD RELAY

Apply battery voltage to ICC brake hold relay terminals 1 and 2, and
then check for continuity under the following conditions. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC brake hold relay. 

Terminal

Condition

Continuity

3

5

When the battery voltage is applied

Existed

When the battery voltage is not ap-
plied

Not exist-

ed

JSOIA0075GB