Nissan Murano: Automatic Drive Positioner :: Dtc/circuit Diagnosis / Seat Memory Switch
Component Function Check
DATA MONITOR
CONSULT
-
Select “MEMORY SW 1”, “MEMORY SW 2” and “SET SW” in “Data Monitor” mode of “AUTO DRIVE POS.”.
-
Check that the function operates normally according to the following conditions:
| Monitor item | Condition | Status |
| MEMORY SW 1 |
Memory switch 1 |
Push |
ON |
| Release |
OFF |
| MEMORY SW 2 |
Memory switch 2 |
Push |
ON |
| Release |
OFF |
| SET SW |
Set switch |
Push |
ON |
| Release |
OFF |
Is the inspection result normal?
YES>>
Inspection End.
NO>>
Perform diagnosis procedure. Refer to Diagnosis Procedure.
Diagnosis Procedure
CHECK SEAT MEMORY SWITCH SIGNAL
-
Ignition switch OFF.
-
Disconnect seat memory switch.
-
Ignition switch ON.
-
Check voltage between seat memory switch harness connector and ground.
| (+) | (–) |
Voltage
(Approx.) |
| Seat memory switch |
| Connector | Terminal |
| D51 |
8 |
Ground |
5V |
| 2 |
| 3 |
Is the inspection result normal?
YES>>
GO TO 3.
NO>>
GO TO 2.
CHECK MEMORY SWITCH CIRCUIT
-
Ignition switch OFF.
-
Disconnect driver seat control unit.
-
Check continuity between driver seat control unit harness connector and seat memory switch harness connector.
| Driver seat control unit | Seat memory switch | Continuity |
| Connector | Terminal | Connector | Terminal |
| B209 |
11 |
D51 |
3 |
Yes |
| 21 |
8 |
| 27 |
2 |
-
Check continuity between driver seat control unit harness connector and ground.
| Driver seat control unit | Ground | Continuity |
| Connector | Terminal |
| B209 |
11 |
No |
| 21 |
| 27 |
Is the inspection result normal?
YES>>
Replace driver seat control unit. Refer to Removal and Installation.
NO>>
Repair or replace harness.
CHECK MEMORY SWITCH GROUND CIRCUIT
Check continuity between seat memory switch harness connector and ground.
| Seat memory switch | Ground | Continuity |
| Connector | Terminal |
| D51 |
1 |
Yes |
Is the inspection result normal?
YES>>
GO TO 4.
NO>>
Repair or replace harness.
CHECK SEAT MEMORY SWITCH
Refer to Component Inspection.
Is the inspection result normal?
YES>>
Check intermittent incident. Refer to Intermittent Incident.
NO>>
Replace seat memory switch. Refer to Removal and Installation.
Component Inspection
CHECK SEAT MEMORY SWITCH
-
Ignition switch OFF.
-
Disconnect seat memory switch.
-
Check continuity between seat memory switch terminals.
| Seat memory switch | Condition | Continuity |
| Terminal |
| 1 |
2 |
Memory switch 1 |
Push |
Yes |
| Release |
No |
| 3 |
Memory switch 2 |
Push |
Yes |
| Release |
No |
| 8 |
Set switch |
Push |
Yes |
| Release |
No |
Is the inspection result normal?
YES>>
Inspection End.
NO>>
Replace seat memory switch. Refer to Removal and Installation.
Component Function Check
DATA MONITOR
CONSULT
Select “TILT SW-UP”, “TILT SW-DOWN” in “Data Monitor” mode of “AUTO DRIVE POS.”.
Check that the function operates normally according to the following conditions:
Monitor item Condition Status
TILT SW-UP
Tilt switch (up)
Operate
ON
Release
OFF
TILT SW-DOWN
Tilt switch (down)
Operate
ON
Release
OFF
Is the inspection result normal?
YES>>
Inspection End...
Component Function Check
DATA MONITOR
CONSULT
Select “MIR CHNG SW-R” and “MIR CHNG SW-L” in “Data Monitor” mode of “AUTO DRIVE POS.”...
Other information:
System Description
SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description
ECM
CAN communication
Brake pedal position switch signal
Receives Brake pedal position switch state
Accelerator pedal position signal
Receives accelerator pedal position (angle)
Stop lamp switch signal
Receives stop lamp switch state
Engine speed signal
Receives engine speed
TCM
CAN communication
Input speed signal
Receives the number of revolutions of input shaft
Current gear position signal
Receives a current gear position
Shift position signal
Receives a selector lever position
Output shaft revolution signal
Receives the number of revolutions of output shaft
ABS actuator and electric unit (control unit)
CAN communication
ABS malfunction signal
Receives a malfunction state of ABS
ABS operation signal
Receives an operational state of ABS
TCS malfunction signal
Receives a malfunction state of TCS
TCS operation signal
Receives an operational state of TCS
VDC OFF switch signal
Receives an ON/OFF state of VDC
VDC malfunction signal
Receives a malfunction state of VDC
VDC operation signal
Receives an operational state of VDC
Nissan Murano Vehicle speed signal (ABS)
Receives wheel speeds of four wheels
Yaw rate signal
Receives yaw rate acting on the Nissan Murano vehicle
Side G sensor signal
Receives lateral G acting on the Nissan Murano vehicle
Combination meter
CAN communication
Parking brake switch signal
Receives an operational state of the parking brake
System selection signal
Receives a selection state of each item in "Driver Assistance"
BCM
CAN communication
Turn indicator signal
Receives an operational state of the turn signal lamp and the hazard lamp
Steering angle sensor
CAN communication
Steering angle sensor malfunction signal
Receives a malfunction state of steering angle sensor
Steering angle sensor signal
Receives the number of revolutions, turning direction of the steering wheel
Steering angle speed signal
Receives the turning angle speed of the steering wheel
Lane intervention switch
Lane intervention switch signal
Receives an ON/OFF state of the lane intervention switch
Lane camera unit
ITS communication
Detected lane condition signal
Receives detection results of lane marker
Output Signal Item Reception unit Signal name Description
ABS actuator and electric unit (control unit)
CAN communication
Target yaw moment signal
Transmits a target yaw moment signal to generate yaw moment to the Nissan Murano vehicle
Combination meter
CAN communication
Intelligent Lane Intervention ON indicator lamp signal
Transmits an Intelligent Lane Intervention ON indicator lamp signal to turn ON the Intelligent Lane Intervention ON indicator lamp
Lane departure warning lamp signal
Transmits an lane departure warning lamp signal to turn ON the lane departure warning lamp
Lane camera unit
ITS communication
Nissan Murano Vehicle speed signal
Transmits a vehicle speed calculated by the ADAS control unit
Turn indicator signal
Transmits a turn indicator signal received from BCM
Steering assist system ON indicator
Steering assist system ON indicator signal
Turns ON the steering assist system ON indicator
Intelligent Lane Intervention system ON indicator
Intelligent Lane Intervention system ON indicator signal
Turns ON the Intelligent Lane Intervention system ON indicator
Warning system buzzer
Warning buzzer signal
Activates warning system buzzer...
DTC Description
DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition
B26F7
BCM
(Body control module)
Diagnosis condition
When ignition switch is ON.
Signal (terminal)
—
Threshold
Inside key antenna output circuit in BCM is malfunctioning
Diagnosis delay time
—
POSSIBLE CAUSEBCMFAIL-SAFE—
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
Press door request switch...