Nissan Sentra Service Manual: Symptom diagnosis
Noise, vibration and harshness (nvh) troubleshooting
NVH Troubleshooting Chart
Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Preparation
Commercial Service Tools
...
Other materials:
Rear parcel shelf finisher
Exploded View
Seat belt finisher (RH)
Rear parcel shelf finisher
Rear seatback finisher (RH)
Top tether strap anchor finisher
(RH)
Top tether strap anchor finisher
(center)
Rear seatback finisher (LH)
Top tether strap anchor finisher
(LH)
Seat belt finisher (LH)
Seat b ...
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 > ...
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 control module keep
alive memory (KAM) error]
Malfunction in the internal back up RAM o ...
