Nissan Murano: System / Exterior Lamp Battery Saver System
System Description
SYSTEM DIAGRAM

Signal transmission function list
| Signal name | Input | Output | Description |
| Combination switch signal |
Combination switch (lighting and turn signal switch) |
BCM |
Transmits the combination switch signal to the BCM. |
| High beam request signal |
BCM |
-
IPDM E/R (CAN)
-
Combination meter (CAN)
|
Transmits the high beam request signal via CAN communication. |
| Low beam request signal |
BCM |
IPDM E/R (CAN) |
Transmits the low beam request signal via CAN communication. |
OUTLINE
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Exterior lamp battery saver system is controlled by each function of BCM and IPDM E/R.
Control by BCM
Control by IPDM E/R
-
BCM turns the exterior lamp OFF*, according to the Nissan Murano vehicle status when ignition switch OFF while exterior lamp is ON, for preventing battery discharge.
*: Headlamp (HI/LO).
EXTERIOR LAMP BATTERY SAVER ACTIVATION
-
BCM activates the timer and turns the exterior lamp OFF 45 seconds after the ignition switch is placed ON→OFF with the exterior lamps ON.
-
When in any of following conditions (after the exterior lamp battery saver is activated), exterior lamps can be turned ON:
System Description
SYSTEM DIAGRAMSignal transmission function list Signal name Input Output Description
Combination switch signal
Combination switch (lighting and turn signal switch)
BCM
Transmits the combination switch signal to the BCM...
Other information:
DTC Description
DTC DETECTION LOGIC
An excessively low voltage from the APP sensor 1 is sent to ECM.
An excessively high voltage from the APP sensor 1 is sent to ECM.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2122
APP SEN 1/CIRC
(Throttle/Pedal position sensor/switch “D” circuit low)
Diagnosis condition
Start engine and let it idle
Signal (terminal)
Voltage signal transmitted from APP sensor 1 to ECM
Threshold
An excessively low voltage is sent to ECM
Diagnosis delay time
—
P2123
APP SEN 1/CIRC
(Throttle/Pedal position sensor/switch “D” circuit high)
Diagnosis condition
Start engine and let it idle
Signal (terminal)
Voltage signal transmitted from APP sensor 1 to ECM
Threshold
An excessively high voltage is sent to ECM
Diagnosis delay time
—
POSSIBLE CAUSEDTC P2122
Harness or connectors
(APP sensor 1 circuit is open or shorted...
Diagnosis Procedure
The parking brake warning is displayed during vehicle travel, even though the parking brake is released.
The parking brake warning is not displayed, even while driving the Nissan Murano vehicle with the parking brake applied.
CHECK PARKING BRAKE WARNING LAMP OPERATION
Start engine...