Nissan Sentra Service Manual: Ecm branch line circuit
Diagnosis Procedure
1.Check connector
- Turn the ignition switch off.
- Disconnect the battery cable from the negative terminal.
- Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.Check harness for open circuit
- Disconnect the connector of ECM.
- Check the resistance between the ecm harness connector terminals.
Is the measurement value within the specification? Yes >> go to 3.
No >> repair the ecm branch line.
3.Check power supply and ground circuit
Check the power supply and the ground circuit of the ecm. Refer to ec-164, "diagnosis procedure".
Is the inspection result normal? Yes (present error)>>replace the ecm. Refer to ec-485, "removal and installation".
Yes (past error)>>error was detected in the ecm branch line.
No >> repair the power supply and the ground circuit.
Main line between dlc and hvac circuit
Diagnosis Procedure
1.Check harness continuity (open circuit)
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect the following harness connector ...
Abs branch line circuit
Diagnosis procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the ABS actuator and electri ...
Other materials:
Washer fluid level switch circuit
Description
Transmits the washer level switch signal to the combination meter.
Diagnosis procedure
Regarding Wiring Diagram information, refer to MWI-28, "Wiring Diagram".
1.Check washer level switch signal circuit
Turn ignition switch off.
Disconnect combination meter connecto ...
Service Notice or Precautions for Steering System
In case of removing steering gear assembly, make the final
tightening with grounded and unloaded vehicle
condition, and then check wheel alignment.
Observe the following precautions when disassembling.
Before disassembly, thoroughly clean the outside of the
unit.
...
P0846 Transmission fluid pressure SEN/SW B
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
P0846
TRANSMISSION FLUID
PRESSURE SEN/SW B
(Transmission Fluid Pressure
Sensor/Switch B Circuit
Range/Performance)
The detection ...
