Nissan Altima 2007-2012 Service Manual: Symptom diagnosis
Ecu diagnosis
ECM Reference Value VALUES ON THE DIAGNOSIS TOOL Remarks: ● Specification data are reference values. ● Specification data are output/input values which are detected or supplied b ...Engine control system symptoms
Symptom Table SYSTEM — BASIC ENGINE CONTROL SYSTEM 1 - 6: The numbers refer to the order of inspection. (continued on next table) SYSTEM — ENGINE MECHANICAL & OTHER 1 - 6: The ...Other materials:
P0442 evap control system
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0442 is displayed with DTC P0456, first perform the trouble diagnosis
for DTC P0456. Refer to
EC-336, "DTC Logic".
This diagnosis detects leaks in the EVAP purge line using engine intake
manifold vacuum.
If pressure does not increase ...
Evap leak check
Inspection
CAUTION:
• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP system.
NOTE:
• Do not start engine.
• Improper installation of EVAP service port adapter (commercial service tool)
to the EVAP service po ...
DLC branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the data link connector for damage,
bend and loose connection
(connector side and harness side) ...