Nissan Sentra Service Manual: Push-button ignition switch illumination circuit
Description
Provides the power supply and the ground to control the push-button ignition switch illumination.
Component function check
1.Check push-button ignition switch illumination operation
Consult active test
- Turn the ignition switch ON.
- Select engine sw illumi of bcm (intelligent key) active test item.
- With operating the test items, check that the push-button ignition switch illumination turns ON/OFF.
On : push-button ignition switch illumination on
Off : push-button ignition switch illumination off
Does the push-button ignition switch illumination turn on/off? Yes >> push-button ignition switch illumination circuit is normal.
No >> refer to inl-49, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to inl-26, "wiring diagram".
1.Check push-button ignition switch illumination power supply output
- Turn the ignition switch OFF
- Disconnect push-button ignition switch connector.
- Check voltage between push-button ignition switch harness connector and ground.
Is the inspection result normal? Yes >> go to 4.
No >> go to 2.
2.Check push-button ignition switch illumination power supply open circuit
- Disconnect bcm connector.
- Check continuity between bcm harness connector and the push-button ignition switch harness connector.
Is the inspection result normal? Yes >> go to 3.
No >> repair or replace harness or connector.
3.Check push-button ignition switch illumination power supply short circuit
Check continuity between bcm harness connector and ground.
Is the inspection result normal? YES >> Replace BCM. Refer to BCS-73, "Removal and Installation" (with Intelligent Key), BCS-126, "Removal and Installation" (without Intelligent Key).
NO >> Repair or replace harness or connector.
4.Check push-button ignition switch illumination ground circuit
Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal? Yes >> replace push-button ignition switch. Refer to sec-136, "removal and installation".
No >> repair or replace harness or connector.
Trunk room lamp circuit
Description
Controls the trunk room lamp (ground side) to turn the trunk room lamp on and
off.
Diagnosis Procedure
Regarding wiring diagram information, refer to inl-17, "wiring diagram" ...
Symptom diagnosis
Interior lighting system symptoms
Symptom Table
Caution:
Perform the self-diagnosis with consult before the symptom diagnosis.
Perform the trouble diagnosis
if any dtc is detected.
...
Other materials:
Dtc/circuit diagnosis
Power supply and ground circuit
Audio unit
Audio unit : diagnosis procedure
Regarding wiring diagram information, refer to av-25, "wiring diagram".
1.Check fuse
Check that the following fuses are not blown.
Are the fuses blown?
Yes >> replace the blown fuse after repairing t ...
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 ...
DTC/Circuit diagnosis
U0073 COMMUNICATION BUS A OFF
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
U0073
COMM BUS A OFF
(Control Module Communication
Bus A Off)
TCM communication blockage lasts for 2 sec ...
