Nissan Pathfinder: Dtc/circuit Diagnosis (B2001-45 Intelligent Key Unit ... B2417-15 Touch Sensor Circuit Lh Open)

• B2001-45 Intelligent Key Unit
• B2010-1c Battery Voltage
• B203c-14 Inside Antenna
• B203e-14 Outside Antenna
• B2046-42 Eeprom
• B2087 One Touch Sensor (fl)
• B2086-23: Request Sw (bd/tr)
• B2409-12 Half Latch Switch
• B2409-14 Half Latch Switch
• B2417-15 Touch Sensor Circuit Lh Open

B2001-45 Intelligent Key Unit Nissan Pathfinder

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2001-45	Intelligent Key unit (Intelligent Key unit)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	—
		Threshold	Intelligent Key unit is internal malfunctioning
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Intelligent Key unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

1. Erase DTC.

2. Ignition switch OFF.

3. Ignition switch ON.

4. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

REPLACE INTELLIGENT KEY UNIT

When DTC “B2001-45” is detected, replace Intelligent Key unit.

>>

Replace Intelligent Key unit. Refer to Removal and Installation.

B2010-1c Battery Voltage Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2010-1C	Battery voltage (Battery voltage)	Diagnosis condition	All times
		Signal (terminal)	Intelligent Key unit battery power supply signal
		Threshold	Less than 4 V or more than 16 V
		Diagnosis delay time	—

POSSIBLE CAUSE

• Harness or connector (power supply circuit)

• Intelligent Key unit

• Battery

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

1. Erase DTC.

2. Ignition switch OFF.

3. Ignition switch ON.

4. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK BATTERY VOLTAGE

Measure the battery voltage. Refer to How to Handle Battery.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace battery.

CHECK POWER SUPPLY CIRCUIT

Check Intelligent Key unit power supply circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

Repair the malfunctioning part.

B203c-14 Inside Antenna Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC detecting condition
B203C-14	Inside antenna (Inside antenna)	Diagnosis condition	Work support “INSIDE/OUTSIDE ANT DIAGNOSIS”: activated
		Signal (terminal)	Inside key antenna (console) signal (Intelligent Key unit connector terminal: 33, 34)
		Threshold	Inside key antenna (console) circuit is shorted to ground
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Intelligent Key unit

• Inside key antenna (console)

• Harness or connector (inside key antenna (console) circuit is open or shorted)

FAIL-SAFE

–

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Select “INSIDE/OUTSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode of “HANDS FREE MODULE”.

2. Check the “Self Diagnosis Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK INSIDE KEY ANTENNA (CONSOLE) INPUT SIGNAL 1

1. Ignition switch ON.

2. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

   (+)		(–)	Condition		Signal (Reference value)
   Intelligent Key unit
   Connector	Terminal
   M38	33	Ground	Press push-button ignition switch	When Intelligent Key is in the passenger compartment
   				When Intelligent Key is not in the passenger compartment
   	34			When Intelligent Key is in the passenger compartment
   				When Intelligent Key is not in the passenger compartment

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK INSIDE KEY ANTENNA (CONSOLE) CIRCUIT

1. Ignition switch OFF.

2. Disconnect Intelligent Key unit connector and inside key antenna (console) connector.

3. Check continuity between Intelligent Key unit harness connector and inside key antenna (console) harness connector.

   Intelligent Key unit		Inside key antenna (console)		Continuity
   Connector	Terminal	Connector	Terminal
   M38	33	M147	2	Yes
   	34		1

4. Check continuity between Intelligent Key unit harness connector and ground.

   Intelligent Key unit		(-)	Continuity
   Connector	Terminal
   M38	33	Ground	No
   	34

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK INSIDE KEY ANTENNA (CONSOLE) INPUT SIGNAL 2

1. Replace inside key antenna (console). (New antenna or other antenna)

2. Connect Intelligent Key unit connector and inside key antenna connector.

3. Ignition switch ON.

4. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

   (+)		(–)	Condition		Signal (Reference value)
   Intelligent Key unit
   Connector	Terminal
   M38	33	Ground	Press push-button ignition switch	When Intelligent Key is in the passenger compartment
   				When Intelligent Key is not in the passenger compartment
   	34			When Intelligent Key is in the passenger compartment
   				When Intelligent Key is not in the passenger compartment

Is the inspection result normal?

YES>>

Replace inside key antenna (console). Refer to Removal and Installation.

NO>>

Replace Intelligent Key unit. Refer to Removal and Installation.

B203e-14 Outside Antenna Nissan Pathfinder 2025

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC detecting condition
B203E-14	Outside antenna (Outside antenna)	Diagnosis condition	Work support “INSIDE/OUTSIDE ANT DIAGNOSIS”: activated
		Signal (terminal)	Outside key antenna (rear door LH) signal (Intelligent Key unit connector terminal: 35, 36)
		Threshold	Outside key antenna (rear door LH) circuit is shorted to ground
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Intelligent Key unit

• Outside key antenna (rear door LH)

• Harness or connector [outside key antenna (rear door LH) circuit is open or shorted]

FAIL-SAFE

–

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Select “INSIDE/OUTSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode of “HANDS FREE MODULE”.

2. Check “Self Diagnosis Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK OUTSIDE KEY ANTENNA (REAR DOOR LH) INPUT SIGNAL 1

1. Ignition switch ON.

2. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

   (+)		(–)	Condition		Signal (Reference value)
   Intelligent Key unit
   Connector	Terminal
   M38	35	Ground	When the door request switch (front door LH or rear door LH) is operated with ignition switch ON	When Intelligent Key is in the antenna detection area
   				When Intelligent Key is not in the antenna detection area
   	36			When Intelligent Key is in the antenna detection area
   				When Intelligent Key is not in the antenna detection area

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK OUTSIDE KEY ANTENNA (REAR DOOR LH) CIRCUIT

1. Ignition switch OFF.

2. Disconnect Intelligent Key unit connector and outside key antenna (rear door LH) connector.

3. Check continuity between Intelligent Key unit harness connector and outside key antenna (rear door LH) connector.

   Intelligent Key unit		Outside key antenna (rear door LH)		Continuity
   Connector	Terminal	Connector	Terminal
   M38	35	D203	2	Yes
   	36		1

4. Check continuity between Intelligent Key unit harness connector and ground.

   Intelligent Key unit		(-)	Continuity
   Connector	Terminal
   M38	35	Ground	No
   	36

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK OUTSIDE KEY ANTENNA (REAR DOOR LH) INPUT SIGNAL 2

1. Replace outside key antenna (rear door LH). (New antenna or other antenna)

2. Connect Intelligent Key unit connector and outside key antenna (rear door LH) connector.

3. Ignition switch ON.

4. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

   (+)		(–)	Condition		Signal (Reference value)
   Intelligent Key unit
   Connector	Terminal
   M38	35	Ground	When the door request switch (front door LH or rear door LH) is operated with ignition switch ON	When Intelligent Key is in the antenna detection area
   				When Intelligent Key is not in the antenna detection area
   	36			When Intelligent Key is in the antenna detection area
   				When Intelligent Key is not in the antenna detection area

Is the inspection result normal?

YES>>

Replace outside key antenna (rear door LH). Refer to Removal and Installation.

NO>>

Replace Intelligent Key unit. Refer to Removal and Installation.

B2046-42 Eeprom Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2046-42	EEPROM (Electrically Erasable Programmable Read-Only Memory)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	—
		Threshold	EEPROM in Intelligent Key unit is malfunctioning
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Intelligent Key unit

• Mistook the "Re programming"

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

1. Erase DTC.

2. Ignition switch OFF.

3. Ignition switch ON.

4. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

PERFORM "REPROGRAMING"

CONSULT

1. Perform "Reprograming".

2. Erase DTC.

3. Ignition switch OFF.

4. Ignition switch ON.

5. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

GO TO 2.

NO>>

Inspection End.

REPLACE INTELLIGENT KEY UNIT

Replace Intelligent Key unit. Refer to Removal and Installation.

>>

Inspection End.

B2087 One Touch Sensor (fl) Nissan Pathfinder 2022

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2087-08	One touch sensor (FL) [Request switch (front left side)]	[BUS]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 4)
			Threshold	Intelligent Key unit detects that the front door request switch LH is stuck ON
			Diagnosis delay time	10 seconds or more
B2087-11		[GND-SHORT}	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 4)
			Threshold	Intelligent Key unit detects that the front door request switch LH is stuck ON
			Diagnosis delay time	10 seconds or more
B2087-23		[LOWER LIMIT ERR]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 4)
			Threshold	Intelligent Key unit detects that the front door request switch LH is stuck ON
			Diagnosis delay time	10 seconds or more
B2087-24		[UPPER LIMIT ERR]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 4)
			Threshold	Intelligent Key unit detects that the front door request switch LH is stuck ON
			Diagnosis delay time	10 seconds or more
B2087-44		[DATA MEM FAIL]	Diagnosis condition	Ignition switch ON
			Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 4)
			Threshold	Intelligent Key unit detects that the front door request switch LH is stuck ON
			Diagnosis delay time	10 seconds or more

POSSIBLE CAUSE

• Front door request switch LH

• Harness or connector (front door request switch LH circuit is shorted)

• Intelligent Key unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

CHECK SELF-DIAG RESULT

CONSULT

1. Ignition switch ON and wait for 10 seconds or more.

2. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK DOOR REQUEST SWITCH INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect front door request switch LH connector.

3. Check voltage between front door request switch LH harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   Front door request switch LH
   Connector	Terminal
   D3	1	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK DOOR REQUEST SWITCH CIRCUIT

1. Disconnect Intelligent Key unit connector.

2. Check continuity between front door request switch LH harness connector and Intelligent Key unit harness connector.

   Front door request switch LH		Intelligent Key unit		Continuity
   Connector	Terminal	Connector	Terminal
   D3	1	M38	4	Yes

3. Check continuity between front door request switch LH harness connector and ground.

   Front door request switch LH		(-)	Continuity
   Connector	Terminal
   D3	1	Ground	No

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK DOOR REQUEST SWITCH GROUND CIRCUIT

Check continuity between front door request switch LH harness connector and ground.

Front door request switch LH		(-)	Continuity
Connector	Terminal
D3	2	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK DOOR REQUEST SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace front door outside handle. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

B2086-23: Request Sw (bd/tr) Nissan Pathfinder SUV

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2086-23	Request SW (BD/TR) [Request switch (back door/trunk)]	Diagnosis condition	Ignition switch ON
		Signal (terminal)	Door request switch signal (Intelligent Key unit connector terminal 5)
		Threshold	Intelligent Key unit detects that the back door request switch is stuck ON
		Diagnosis delay time	10 seconds or more

POSSIBLE CAUSE

• Back door opener switch

• Harness or connector (back door request switch circuit is shorted)

• Intelligent Key unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

CHECK SELF-DIAG RESULT

CONSULT

1. Ignition switch ON and wait for 10 seconds or more.

2. Check “Self Diagnostic Result” mode of “HANDS FREE MODULE”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK BACK DOOR REQUEST SWITCH INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect back door opener switch connector.

3. Check voltage between back door opener switch harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   Back door opener switch
   Connector	Terminal
   D559	4	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK BACK DOOR REQUEST SWITCH CIRCUIT

1. Disconnect Intelligent Key unit connector.

2. Check continuity between back door opener switch harness connector and Intelligent Key unit harness connector.

   Back door opener switch		Intelligent Key unit		Continuity
   Connector	Terminal	Connector	Terminal
   D559	4	M38	5	Yes

3. Check continuity between back door opener switch harness connector and ground.

   Back door opener switch		—	Continuity
   Connector	Terminal
   D559	4	Ground	No

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK BACK DOOR REQUEST SWITCH GROUND CIRCUIT

Check continuity between back door opener switch harness connector and ground.

Back door opener switch		—	Continuity
Connector	Terminal
D559	3	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK BACK DOOR REQUEST SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace back door opener switch. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

B2409-12 Half Latch Switch Nissan Pathfinder Fifth generation

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2409-12	Half latch switch (Half latch switch)	Diagnosis condition	When the door unlock operates while ignition switch is OFF (auto ACC OFF status) or the battery terminal is removed
		Signal (terminal)	Half latch switch signal
		Threshold	Automatic back door control unit detect power short of half latch switch circuit
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Harness or connector (half latch switch circuit is power short)

• Automatic back door control unit

• Back door lock assembly (half latch switch)

FAIL-SAFE

Inhibit automatic back door system [only operate back door closure function (open function)]

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. When the door unlock operates by Intelligent Key or door request switch while ignition switch is OFF (auto ACC OFF status).

2. Check “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK HALF LATCH SWITCH INPUT SIGNAL

Check voltage between automatic back door control unit harness connector and ground.

(+)		(–)	Condition		Voltage (Approx.)
Automatic back door control unit
Connector	Terminal
B55	10	Ground	Back door	Open	0V
				Fully closed/ half latch	Battery voltage

Is the inspection result normal?

YES>>

Replace automatic back door control unit. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK HALF LATCH SWITCH CIRCUIT

1. Disconnect automatic back door control unit connector and back door lock assembly connector.

2. Check voltage between automatic back door control unit harness connector and ground.

   Automatic back door control unit		—	Voltage
   Connector	Terminal
   B55	10	Ground	0 V

Is the inspection result normal?

YES>>

Replace back door lock assembly. Refer to Removal and Installation.

NO>>

Repair or replace harness.

B2409-14 Half Latch Switch Nissan Pathfinder 5th Gen

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2409-14	Half latch switch (Half latch switch)	Diagnosis condition	When back door open
		Signal (terminal)	Half latch switch signal
		Threshold	Automatic back door control unit detects when one of the following conditions is satisfied Half latch switch circuit is ground short Half latch switch is stuck ON
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Harness or connector (half latch switch circuit is ground short)

• Automatic back door control unit

• Back door lock assembly (half latch switch)

FAIL-SAFE

• Inhibit automatic back door system [only operate back door closure function (open function)]

• Manual latch and unlatch functions available only

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Operate automatic back door.

3. Check “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK HALF LATCH SWITCH INPUT SIGNAL

Check voltage between automatic back door control unit harness connector and ground.

(+)		(–)	Condition		Voltage (Approx.)
Automatic back door control unit
Connector	Terminal
B55	10	Ground	Back door	Open	0 V
				Fully closed/ half latch	Battery voltage

Is the inspection result normal?

YES>>

Replace automatic back door control unit. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK HALF LATCH SWITCH CIRCUIT

1. Ignition switch OFF.

2. Disconnect automatic back door control unit connector and back door lock assembly connector.

3. Check continuity between automatic back door control unit harness connector and back door lock assembly harness connector.

   Automatic back door control unit		Back door lock assembly		Continuity
   Connector	Terminal	Connector	Terminal
   B55	10	D557	6	Yes

4. Check continuity between automatic back door control unit harness connector and ground.

   Automatic back door control unit		(-)	Continuity
   Connector	Terminal
   B55	10	Ground	No

Is the inspection result normal?

YES>>

Replace back door lock assembly. Refer to Removal and Installation.

NO>>

Repair or replace harness.

B2417-15 Touch Sensor Circuit Lh Open Nissan Pathfinder 2025

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B2417-15	Touch sensor circuit LH open (Touch sensor circuit left hand open)	Diagnosis condition	All times
		Signal (terminal)	Touch sensor LH signal
		Threshold	Automatic back door control unit detects when one of the following conditions is satisfied Touch sensor LH circuit is open or shorted Malfunction of touch sensor LH
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Harness or connector (touch sensor LH circuit is open or shorted)

• Automatic back door control unit

• Touch sensor LH

FAIL-SAFE

Inhibit automatic back door system (only operate back door closure function)

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Check “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK TOUCH SENSOR LH INPUT SIGNAL

Check voltage between automatic back door control unit harness connector and ground.

(+)		(–)	Condition		Voltage (Approx.)
Automatic back door control unit
Connector	Terminal
B55	12	Ground	Touch sensor LH	Detect obstruction	0.2 – 3 V
				Other than above	3.4 – 6.5 V

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 5.

CHECK CONNECTOR

1. Ignition switch OFF.

2. Check the automatic back door control unit harness connector for disconnection or looseness.

3. Check the touch sensor LH harness connector for disconnection or looseness.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair/replace harness or connector, securely lock the connector, and GO TO 5.

CHECK AUTOMATIC BACK DOOR CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT

Check the automatic back door control unit power supply and ground circuits. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair/replace harness, connector, fuse, or fusible link, and GO TO 5.

CHECK TERMINAL

1. Ignition switch OFF.

2. Disconnect automatic back door control unit harness connector and then check the automatic back door control unit pin terminals for damage or loose connection with harness connector.

3. Disconnect touch sensor LH harness connector and check touch sensor LH pin terminal for damage or loose connection with harness connector.

Is the inspection result normal?

YES>>

Replace automatic back door control unit. Refer to Removal and Installation.

NO>>

Repair/replace harness, connector, or terminal.

CHECK TOUCH SENSOR LH CIRCUIT

1. Ignition switch OFF.

2. Disconnect automatic back door control unit connector and touch sensor LH connector.

3. Check continuity between automatic back door control unit harness connector and touch sensor LH harness connector.

   Automatic back door control unit		Touch sensor LH		Continuity
   Connector	Terminal	Connector	Terminal
   B55	12	D530	1	Yes

4. Check continuity between automatic back door control unit harness connector and ground.

   Automatic back door control unit		(-)	Continuity
   Connector	Terminal
   B55	12	Ground	No

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness.

CHECK TOUCH SENSOR LH GROUND CIRCUIT

1. Disconnect touch sensor RH connector.

2. Check continuity between automatic back door control unit harness connector and touch sensor LH harness connector.

   Automatic back door control unit		Touch sensor LH		Continuity
   Connector	Terminal	Connector	Terminal
   B55	14	D530	4	Yes

3. Check continuity between automatic back door control unit harness connector and ground.

   Automatic back door control unit		(-)	Continuity
   Connector	Terminal
   B55	14	Ground	No

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair or replace harness.

CHECK TOUCH LH SENSOR

Check touch sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace touch sensor LH. Refer to Removal and Installation.