Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DTC "C1116" May Be Detected When The Brake Pedal And The Accelerator Pedal Are Simultaneously Depressed For 1 Minute Or More While Driving The Vehicle. This Is Not A Malfunction.

Interview From The Customer
Check If The Brake Pedal And The Accelerator Pedal Are Simultaneously Depressed For 1 Minute Or More While Driving The Vehicle.

Is There Such A History?

Yes

GO TO STEP 2 .

No

GO TO STEP 3 .
Perform Self-Diagnosis
consult
1. Erase "Self Diagnostic Result" Of "ABS"
2. Turn The Ignition Switch Off - On - Off.
  NOTE: Wait At Least 10 Seconds After Turning Ignition Switch Off Or On.
3. Start The Engine.
  NOTE: Stop The Vehicle.
4. Depress The Brake Pedal Several Times.
5. Turn The Ignition Switch Off.
  NOTE: Wait At Least 10 Seconds After Turning Ignition Switch Off.
6. Start The Engine.
  NOTE: Wait At Least 10 Seconds After Starting The Engine.
7. Select "Self Diagnostic Result" Mode Of "ABS".
Is DTC "C1116" Detected?

Yes

GO TO STEP 3 .

No

Inspection End.
Stop Lamp For Illumination
Depress Brake Pedal And Check That Stop Lamp Turns On.

Does Stop Lamp Turn On?

Yes

GO TO STEP 5 .

No

Check The Stop Lamp System. Refer To SYSTEM WIRING DIAGRAMS . GO TO STEP 4 .
Check Data Monitor (1)
consult
1. Erase "Self Diagnostic Result" Of "ABS"
2. Turn The Ignition Switch Off - On - Off.
  NOTE: Wait At Least 10 Seconds After Turning Ignition Switch Off Or On.
3. Start The Engine.
  NOTE: Stop The Vehicle.
4. Select "ABS", "Data Monitor" And "Stop Lamp Sw" According To This Order. Check That Data Monitor Displays "On" Or "Off" When Brake Pedal Is Depressed Or Released. Refer To Values On The Diagnosis Tool .
5. Select "ABS", "Data Monitor" And "Press Sensor" According To This Order. Depress The Brake Pedal And Check If "Pressure Sensor" Indicates "5 Bar" Or Less When "Stop Lamp Sw" Of "Data Monitor" Turns From "Off" To "On".
Is The Inspection Result Normal?

Yes

Inspection End.

No

GO TO STEP 5 .
Check Connector And Terminal
1. Turn The Ignition Switch Off.
2. Disconnect ABS Actuator And Electric Unit (Control Unit) Harness Connector.
3. Check The ABS Actuator And Electric Unit (Control Unit) Harness Connector For Disconnection Or Looseness.
4. Check The ABS Actuator And Electric Unit (Control Unit) Pin Terminals For Damage Or Loose Connection With Harness Connector.
5. Disconnect Stop Lamp Switch Harness Connector.
6. Check The Stop Lamp Switch Harness Connector For Disconnection Or Looseness.
7. Check The Stop Lamp Switch Pin Terminals For Damage Or Loose Connection With Harness Connector.
Is The Inspection Result Normal?

Yes

GO TO STEP 6 .

No

Repair / Replace Harness, Connector, Or Terminal, And GO TO STEP 6 .
Check ABS Actuator And Electric Unit (Control Unit) Power Supply And Ground Circuit
Check The ABS Actuator And Electric Unit (Control Unit) Power Supply And Ground Circuits. Refer To Diagnosis Procedure .

Is The Inspection Result Normal?

Yes

GO TO STEP 7 .

No

Repair / Replace Harness, Connector, Fuse, Or Fusible Link.
Check Data Monitor (2)
consult
1. Erase "Self Diagnostic Result" Of "ABS"
2. Turn The Ignition Switch Off - On - Off.
  NOTE: Wait At Least 10 Seconds After Turning Ignition Switch Off Or On.
3. Start The Engine.
  NOTE: Stop The Vehicle.
4. Select "ABS", "Data Monitor" And "Stop Lamp Sw" According To This Order. Check That Data Monitor Displays "On" Or "Off" When Brake Pedal Is Depressed Or Released. Refer To Values On The Diagnosis Tool .
5. Select "ABS", "Data Monitor" And "Press Sensor" According To This Order. Depress The Brake Pedal And Check If "Pressure Sensor" Indicates "5 Bar" Or Less When "Stop Lamp Sw" Of "Data Monitor" Turns From "Off" To "On".
Is The Inspection Result Normal?

Yes

Inspection End.

No

GO TO STEP 8 .

Check Stop Lamp Switch Circuit (1)

Turn The Ignition Switch Off.
Disconnect ABS Actuator And Electric Unit (Control Unit) Harness Connector.

Check The Voltage Between ABS Actuator And Electric Unit (Control Unit) Harness Connector And Ground.

ABS Actuator And Electric Unit (Control Unit)		-	Condition	Voltage (Approx.)
Connector	Terminal
E125	17	Ground	Brake Pedal Depressed	Battery Voltage
			Brake Pedal Not Depressed	0 V

Turn The Ignition Switch On.

Check The Voltage Between ABS Actuator And Electric Unit (Control Unit) Harness Connector And Ground.

ABS Actuator And Electric Unit (Control Unit)		-	Condition	Voltage (Approx.)
Connector	Terminal
E125	17	Ground	Brake Pedal Depressed	Battery Voltage
			Brake Pedal Not Depressed	0 V

Is The Inspection Result Normal?

Yes

Replace The ABS Actuator And Electric Unit (Control Unit). Refer To Removal And Installation .

Repair / Replace Harness Or Connector, And GO TO STEP 9 .

Check Stop Lamp Switch Circuit (2)

Turn The Ignition Switch Off.
Disconnect Stop Lamp Switch Harness Connector.

Check The Continuity Between ABS Actuator And Electric Unit (Control Unit) Harness Connector And Stop Lamp Switch Harness Connector.

ABS Actuator And Electric Unit (Control Unit)		Stop Lamp Switch		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E125	17	E38	4	Yes

Check The Continuity Between ABS Actuator And Electric Unit (Control Unit) Harness Connector And The Ground.

ABS Actuator And Electric Unit (Control Unit)		-	Continuity
Connector	Terminal
E125	17	Ground	No

Is The Inspection Result Normal?

Yes

Replace The ABS Actuator And Electric Unit (Control Unit). Refer To Removal And Installation .

Repair / Replace Harness Or Connector, And GO TO STEP 10 .

Check Data Monitor (3)
consult
1. Connect ABS Actuator And Electric Unit (Control Unit) Harness Connector.
2. Connect Stop Lamp Switch Harness Connector.
3. Erase "Self Diagnostic Result" Of "ABS"
4. Turn The Ignition Switch Off - On - Off.
  NOTE: Wait At Least 10 Seconds After Turning Ignition Switch Off Or On.
5. Start The Engine.
  NOTE: Stop The Vehicle.
6. Select "ABS", "Data Monitor" And "Stop Lamp Sw" According To This Order. Check That Data Monitor Displays "On" Or "Off" When Brake Pedal Is Depressed Or Released. Refer To Values On The Diagnosis Tool .
7. Select "ABS", "Data Monitor" And "Press Sensor" According To This Order. Depress The Brake Pedal And Check If "Pressure Sensor" Indicates "5 Bar" Or Less When "Stop Lamp Sw" Of "Data Monitor" Turns From "Off" To "On".
Is The Inspection Result Normal?

Yes

Inspection End.

No

Replace The ABS Actuator And Electric Unit (Control Unit). Refer To Removal And Installation .