Nissan Versa (N17): U12B0 Power supply voltage
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.CHECK CHARGING SYSTEM
Check the vehicle charging system. Refer to CHG "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG-16, "Work Flow (Without EXP-800 NI or GR8-1200 NI)".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning components.
2.CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS
Perform the AV control unit power supply and ground circuit diagnosis procedure. Refer to AV "AV CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the AV control unit. Refer to AV "Removal and Installation".
NO >> Repair or replace harness or connectors.
U12AA Configuration error
DTC Logic DTC DETECTION LOGIC CONSULT Display DTC Detection Condition Possible Cause Configuration Error [U12AA] AV control unit is not properly configured or configurati ...
U12B1 Power supply voltage
DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.CHECK CHARGING SYSTEM Check the vehicle charging system. Refer to CHG "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG "W ...
Other materials:
Line pressure control
Line pressure control : system diagram
Line pressure control : system description
When an engine and A/T integrated control signal (engine torque)
equivalent to the engine drive force is
transmitted from the ECM to the TCM, the TCM controls the line pressure
solenoid valve.
Th ...
Shift position indicator circuit
Component Parts Function Inspection
1.CHECK SHIFT POSITION INDICATOR
Start the engine.
Shift the selector lever.
Check that the selector lever position and the shift position indicator
on the combination meter are identical.
Is the inspection result normal?
YES >> INSPECTION ...
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