Nissan Qashqai J11. Manual - part 402
ECK-168
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
B1900 DC/DC CONVERTER
B1900 DC/DC CONVERTER
DTC Logic
INFOID:0000000010289730
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If the other DTC Confirmation Procedure is performed right before this procedure, the ignition switch must be
turned OFF and wait for 10 seconds or more to start this procedure.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-1
1.
Turn ignition switch ON and wait at least 3 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-168, "Diagnosis Procedure"
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1.
Start the engine and warm it up to normal operating temperature.
2.
Press start/stop OFF switch and check that the switch indicator is ON.
3.
Select “AUTO STOP START” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4.
Touch “START” and operate stop/start system. (engine stop.)
5.
Touch “CANCEL” and restart the engine.
6.
Check DTC.
Without CONSULT
1.
Activate stop/start system. Refer to
ECK-39, "STOP/START SYSTEM : System Description"
CAUTION:
Always drive vehicle at a safe speed.
2.
Restart the engine.
3.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-168, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010289731
1.
CHECK FUSIBLE LINK
1.
Turn ignition switch OFF.
2.
Check that the following fusible link is not fusing.
Is the fusible link fusing?
YES
>> Replace the fusible link after repairing the applicable circuit.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
B1900
DC/DC CONVERTER
(DC/DC converter)
DC/DC converter detects power supply
input 1 is 5.0 V or less and difference
between power supply input 1 and pow-
er supply input 2 is 4.0 V or more for 3
seconds.
• Harness and connectors
(DC/DC converter power supply input 1 cir-
cuit is open or shorted.)
• DC/DC converter
Location
Fusible link
Capacity
Fusible link holder
O
30 A