Nissan Sentra Service Manual: 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 loose connection (connector side and harness side).
- Harness connector e4
- Harness connector m2
Is the inspection result normal? Yes >> go to 2.
No >> repair the terminal and connector.
2.Check harness continuity (open circuit)
- Disconnect the following harness connectors.
- Ipdm e/r
- Harness connectors e4 and m2
- Check the continuity between the ipdm e/r harness connector and the harness connector.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair the main line between the IPDM E/R and the harness connector E4.
3.Check harness continuity (open circuit)
Check the continuity between the harness connector and the data link 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 ipdm e/r and the data link connector.
No >> repair the main line between the harness connector m2 and the data link connector.
Can system (type 2)
Dtc/circuit diagnosis ...
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 ...
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AUDIO UNIT : Diagnosis Procedure
Regarding wiring diagram information, refer to av-88, "wiring diagram".
1.Check fuse
Check that the following fuses are not blown.
Are the fuses blown?
Yes >> replace the blown fuse after repairing ...
P0448 EVAP Canister vent control valve
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0448
VENT CONTROL VALVE
(Evaporative emission system
vent control circuit shorted)
EVAP canister vent control valve remains
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Heating and cooling unit assembly
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Defroster duct
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Front floor duct (LH)
Rear floor connecting duct (LH)
Rear floor duct (LH)
Rear floor duct nozzle (LH)
Rear floor duct nozzle (RH)
Rear floor duct (RH)
Rear flo ...
