Nissan Sentra Service Manual: P0604 ECM
DTC Logic
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
| P0604 | ECM [Internal control module random access memory (RAM) error] | Malfunction in the internal RAM of ECM. | ECM |
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
- Turn ignition switch OFF and wait at least 10 seconds
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON (engine stopped) and wait least 20 minutes.
CAUTION:
Never start engine during this procedure.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Proceed to EC-347, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON.
- Erase DTC.
- Perform DTC confirmation procedure. Refer to EC-347, "DTC Logic".
Is the 1st trip DTC P0604 displayed again? YES >> Replace ECM. Refer to EC-485, "Removal and Installation".
NO >> INSPECTION END
P0603 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0603
ECM BACK UP CIRCUIT
[Internal co ...
P0605 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0605
ECM
[Internal control module
...
Other materials:
Both side headlamps do not switch
to high beam
Description
The headlamps (both sides) do not switch to high beam when the lighting
switch is in the hi or pass setting.
Diagnosis procedure
1.Combination switch (lighting and turn signal switch) inspection
Check the combination switch (lighting and turn signal switch). Refer to
bcs-72, &q ...
Floor mats
WARNING
To avoid potential pedal interference that
may result in a collision or injury:
NEVER place a floor mat on top of another
floor mat in the driver front
position.
Use only genuine NISSAN floor mats
specifically designed for use in your vehicle
model. See ...
Bcm 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 bcm for damage, bend and loose
connection (unit side and
connector side).
Is the inspection result normal?
Yes > ...