Infiniti QX56 (Z62). Manual - part 276

 

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Infiniti QX56 (Z62). Manual - part 276

 

 

DAS

C1A13 STOP LAMP RELAY

DAS-141

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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C1A13 STOP LAMP RELAY

DTC Logic

INFOID:0000000006228076

DTC DETECTION LOGIC

NOTE:
If DTC “C1A13” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-182,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE (1)

1.

Start the engine.

2.

Perform the active test item “STOP LAMP” with CONSULT-III. 

3.

Perform “All DTC Reading”. 

4.

Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A13” detected as the current malfunction?

YES

>> Refer to 

DAS-141, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE (2)

1.

Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 60 seconds or more without the
brake pedal depressed. 

CAUTION:

Always drive safely. 
NOTE:
If it is outside the above condition, repeat step 1. 

2.

Perform “All DTC Reading”. 

3.

Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A13” detected as the current malfunction?

YES

>> Refer to 

DAS-141, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006228077

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A13” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

DAS-182, "ADAS CONTROL UNIT : DTC Logic"

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH

Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ICC/ADAS”. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A13

(13)

STOP LAMP RLY FIX

• Stop lamp inactive state continues for 0.3 

seconds or more despite the outputting of 
an ICC sensor ICC brake hold relay drive 
signal

• The stop lamp remains ON for 60 seconds 

or more under the following conditions:

- Driving at 40 km/h or more
- No stop lamp drive signal output from ICC 

sensor

- No brake operation

• Stop lamp switch circuit
• ICC brake switch circuit
• ICC brake hold relay circuit
• Stop lamp switch
• ICC brake switch
• ICC brake hold relay
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• ECM
• ABS actuator and electric unit (control 

unit)

DAS-142

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A13 STOP LAMP RELAY

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 3.

3.

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 4.

NO

>> Adjust stop lamp switch installation. Refer to 

BR-7, "Inspection and Adjustment"

4.

CHECK STOP LAMP SWITCH

1.

Disconnect stop lamp switch connector. 

2.

Check stop lamp switch. Refer to 

DAS-137, "Component Inspection (Stop Lamp Switch)"

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace stop lamp switch. 

5.

CHECK STOP LAMP FOR ILLUMINATION

1.

Turn the ignition switch OFF.

2.

Check that the stop lamp is illuminated by depressing the brake pedal to turn the stop lamp ON. 

3.

Remove ICC brake hold relay. 

Is the inspection result normal?

YES

>> GO TO6.

NO

>> Check the stop lamp circuit, and repair or replace the malfunctioning parts. 

6.

CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch, ECM, rear combination lamp, and high-mounted stop lamp connectors. 

3.

Check for continuity between the stop lamp switch harness connector and the ECM harness connector. 

4.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the harnesses or connectors.

7.

CHECK ICC BRAKE HOLD RELAY CIRCUIT

1.

Connect ICC brake hold relay. 

2.

Disconnect the stop lamp switch connector. 

3.

Check that the stop lamp does not illuminate when brake pedal is not depressed. 

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

CHECK ICC BRAKE HOLD RELAY

1.

Remove ICC brake hold relay

2.

Check ICC hold relay. Refer to 

DAS-146, "Component Inspection"

Is the inspection result normal?

Stop lamp switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E115

2

E80

158

Existed

Stop lamp switch

Ground

Continuity

Connector

Terminal

E115

2

Not existed

DAS

C1A13 STOP LAMP RELAY

DAS-143

< DTC/CIRCUIT DIAGNOSIS >

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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

DAS-144

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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 

DAS-146, "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

 

 

 

 

 

 

 

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