Nissan Sentra. Manual - part 771
SEC-112
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B26F9 CRANKING REQUEST CIRCUIT
B26F9 CRANKING REQUEST CIRCUIT
DTC Logic
INFOID:0000000009756762
DTC DETECTION LOGIC
NOTE:
• If DTC B26F9 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B26F9 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION
1. Perform DTC CONFIRMATION PROCEDURE for DTC P1650. Refer to
2. Turn ignition switch ON.
3. Check DTC in Self Diagnostic Result mode of BCM using CONSULT.
Is DTC detected?
YES
>> Go to
SEC-112, "Diagnosis Procedure"
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000009756763
Regarding Wiring Diagram information, refer to
.
1.
CHECK CRANKING REQUEST SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground under the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK CRANKING REQUEST SIGNAL CIRCUIT
1. Turn ignition switch OFF.
DTC No.
CONSULT screen items
(Trouble diagnosis content)
DTC detecting condition
Possible cause
B26F9
CRANK REQ CIR SHORT
(Cranking request circuit
short)
BCM detects that the status of the following
signals does not match.
• Cranking request signal from ECM
• Starter control relay control signal from
ECM (CAN)
• Harness or connectors
(Can communication line is open or
shorted.)
• Harness or connectors
(Cranking request signal circuit is open
or shorted.)
• ECM
• BCM
(+)
(–)
Condition
Voltage
BCM
Connector
Terminal
M85
81
Ground
Ignition switch ON
• Engine: Stopped
• Selector lever position: P
0 – 0.5 V
• Engine: Stopped
• Selector lever position:
Other than P
9 – 16 V
Engine running
9 – 16 V