Nissan Sentra Service Manual: 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 connectors.
- Ecm
- A/C auto amp.
- Check the continuity between the data link connector and the A/C auto amp. harness connector.
Is the inspection result normal? Yes (present error)>>check can system type decision again.
Yes (past error)>>error was detected in the main line between the data link connector and the a/c auto amp.
No >> repair the main line between the data link connector and the a/c auto amp.
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 ...
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 ...
Other materials:
P0420 Three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage c ...
Wiring diagram
Interior room lamp control system
Wiring diagram
Illumination
Wiring diagram
...
Steering switch (meter control switch) signal circuit
Diagnosis Procedure
Regarding wiring diagram information, refer to mwi-28, "wiring diagram".
1.Check combination meter input signal
Turn ignition switch on.
Measure voltage between the following terminals of the combination
meter.
Is the inspection result normal?
Yes &g ...
