Nissan Sentra Service Manual: M&A 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 combination meter 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 combination meter.
- Check the resistance between the combination meter harness connector terminals.
Is the measurement value within the specification? Yes >> go to 3.
No >> repair the combination meter branch line.
3.Check power supply and ground circuit
Check the power supply and the ground circuit of the combination meter. Refer to mwi-52, "combination meter : diagnosis procedure".
Is the inspection result normal? Yes (present error)>>replace the combination meter. Refer to mwi-77, "removal and installation".
Yes (past error)>>error was detected in the combination meter branch line.
No >> repair the power supply and the ground circuit.
Eps 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 eps control unit for dam ...
Strg 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 steering angle sensor fo ...
Other materials:
P0101, P0102, P0103 MAF Sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0101
MAF SEN/CIRCUIT-B1
(Mass or volume air flow “A”
circuit range/performance)
An excessively high voltage from the mass ...
P0643 Sensor power supply
Description
ECM supplies a voltage of 5.0 V to some of the sensors systematically divided
into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a
malfunction may occur simultaneously
in the sensors belonging to the same group as the shorted-circui ...
Precaution for supplemental restraint system (SRS) "air bag" and "seat belt
pre-tensioner"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver and front passenger for certain
types of collision. Information necessary to service the system ...
