Nissan Maxima Service and Repair Manual: B2128 UART communication line
Description
Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1 communication line. Driver seat control unit receives the operation signals of ADP steering switch, door mirror remote control switch and the position signals of tilt sensor, telescopic sensor and door mirror sensors from the automatic drive positioner control unit and transmits the operation request signal.
DTC Logic
DTC DETECTION LOGIC
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
| B2128 | UART COMM | The communication between driver seat control unit and automatic drive positioner control unit is interrupted for a period of time |
|
DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON.
- Check "Self diagnostic result" with CONSULT.
Is the DTC is detects?
Diagnosis Procedure
Regarding Wiring Diagram information, refer to ADP-150, "Wiring Diagram".
1.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON.
- Check "Self diagnostic result" with CONSULT.
- Erase the DTC.
- Perform DTC confirmation procedure. Refer to ADP-45, "DTC Logic".
Is the DTC displayed again?
2. CHECK UART COMMUNICATION LINE CONTINUITY
- Turn ignition switch OFF.
- Disconnect driver seat control unit and automatic drive positioner control unit.
- Check continuity between driver seat control unit harness connector and automatic drive positioner control unit harness connect
- Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
B2116 tilt motor
Description
The tilt motor is installed to the steering column assembly.
The tilt motor is activated with the automatic drive positioner control
unit.
The steering column is tilted up/down ...
Power supply and ground circuit
BCM
BCM : Diagnosis Procedure
Regarding Wiring Diagram information, refer to BCS-67, "Wiring Diagram".
1. CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuses or fusible link are blown.
...
Other materials:
P1554 battery current sensor
Description
The power generation voltage variable control enables fuel consumption to be
decreased by reducing the
engine load which is caused by the power generation of the generator. The
battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures ...
Key reminder function symptoms
Symptom Table
KEY REMINDER FUNCTION MALFUNCTION
NOTE:
Before performing the diagnosis in the following table, check
"Work flow". Refer to DLK-9, "Work Flow".
If the following symptoms are detected, check systems shown in
the "Diagnosis/service procedure" column
in this or ...
Body control system
System Description
OUTLINE
ECU DIAGNOSIS INFORMATION controls the various electrical
components. It inputs the information required to
the control from CAN communication and the signal received from each switch
and sensor.
BCM has combination switch reading function for reading the
...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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