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 ipdm-e and dlc circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and ...
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:
ECU diagnosis information
TCM
Reference Value
CONSULT DATA MONITOR STANDARD VALUE
NOTE:
The following table includes information (items) inapplicable to this
vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
In CONSULT, electric shift timing or lock-up timing, i.e. op ...
Moonroof switch
Description
Transmits switch operation signal to moonroof motor assembly.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to RF-13, "Wiring Diagram".
1.Check moonroof switch input signal
Turn ignition switch on.
Check voltage between moonroof motor assembly harne ...
Basic inspection
Diagnosis and repair workflow
Work flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition
and the environment when the
incident/malfunction occurred).
>> GO TO 2
2.CONFIRM THE SYMPTOM
Try to ...