Nissan Sentra. Instruction — part 839
STR-24
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow (Without GR8-1200 NI)
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OVERALL SEQUENCE
DETAILED FLOW
NOTE:
If any malfunction is found, immediately disconnect the battery cable from the negative terminal.
1.
CHECK ENGINE START
Crank the engine and check that the engine starts.
Does the engine start?
YES
>> GO TO 2.
NO
>> GO TO 3.
AWBIA1303GB
DIAGNOSIS AND REPAIR WORKFLOW
STR-25
< BASIC INSPECTION >
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STR
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2.
CHECK THAT THE STARTER MOTOR STOPS
Check that the starter motor stops after starting the engine.
Does the starter motor stop?
YES
>> Inspection End.
NO
>> Replace starter motor. Refer to
STR-30, "Removal and Installation"
3.
CHECK THAT THE ENGINE TURNS WHEN CRANKING
Check that the engine turns when cranking.
Does engine turn when cranking?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK THE ENGINE SPEED WHEN CRANKING
Check that the engine speed is not low when cranking.
Does engine turn normally?
YES
>> Check ignition/fuel system.
NO
>> Check charge condition, corrosion and connection condition of the battery.
5.
CHECK STARTER MOTOR ACTIVATION
Check that the starter motor runs at cranking.
Does starter motor turn?
YES
>> Replace starter motor. Refer to
STR-30, "Removal and Installation"
NO
>> GO TO 6.
6.
CHECK POWER SUPPLY CIRCUIT
Check the following conditions:
• Fuse and fusible link
• Charge condition, corrosion and connection of the battery.
Are these inspection results normal?
YES
>> GO TO 7.
NO
>> Repair as needed.
7.
CHECK STARTING SYSTEM WIRING
Check the following:
• “B” terminal circuit. Refer to
.
• “S” terminal circuit. Refer to
.
Are the inspection results normal?
YES
>> Replace starter motor. Refer to
STR-30, "Removal and Installation"
NO
>> Repair as needed.
STR-26
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
DTC/CIRCUIT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000009759163
Terminal “B” is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000009759164
Regarding Wiring Diagram information, refer to
(with Intelligent Key system) or
(without Intelligent Key system).
CAUTION:
Perform diagnosis under the condition that the engine cannot start by the following procedure.
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
1.
CHECK “B” TERMINAL CIRCUIT
1. Turn ignition switch OFF.
2. Check that starter motor B” terminal connection is clean and tight.
3. Check voltage between starter motor connector F27 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check harness between battery and starter motor for open circuit.
2.
CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)
1. Shift selector lever to P (Park) or N (Neutral) position (CVT Models) or the clutch pedal is depressed (M/T
Models).
2. Check voltage between battery positive terminal and starter motor B terminal.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between the battery and starter motor for continuity.
3.
CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1. Shift selector lever to P (Pack) or N (Neutral) position (CVT Models) or the clutch pedal is depressed (M/T
Models).
2. Check voltage between starter motor case and battery negative terminal.
Terminals
Voltage
(Approx.)
(+)
(-)
Starter motor “B” terminal
Terminal
F27
B
Ground
Battery voltage
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Starter motor
“B“ terminal
Terminal
Battery positive terminal
F27
B
When the ignition switch is in START position
Less than 0.5V
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Starter motor case
Battery negative terminal
When the ignition switch is in
START position
Less than 0.2V
B TERMINAL CIRCUIT
STR-27
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
Is the inspection result normal?
YES
>> “B” terminal circuit is OK. Further inspection is necessary. Refer to
STR-24, "Work Flow (Without GR8-1200 NI)"
NO
>> Check the starter motor case to engine mounting for high resistance.
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