Nissan Tiida C11. Manual — part 1233
STR-18
< FUNCTION DIAGNOSIS >
[MR18DE]
STARTING SYSTEM
Component Description
INFOID:0000000001728566
Component part
Description
PNP switch
PNP switch supplies power to the starter relay when the selector
lever is shifted to the P or N position.
BCM
BCM sends a starter request signal to the CPU of the IPDM E/R
over the CAN communication lines.
IPDM E/R
CPU inside IPDM E/R operates the starter relay at the request of
the BCM over the CAN communication lines.
Starter motor
The starter motor plunger closes and the motor is supplied with
battery power, which in turn cranks the engine, when the “S” ter-
minal is supplied with electric power.
B TERMINAL CIRCUIT
STR-19
< COMPONENT DIAGNOSIS >
[MR18DE]
C
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A
STR
N
P
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COMPONENT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000001728567
Terminal "2" (B) is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000001728568
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 depleted.
1.
CHECK TERMINAL 2 POWER SUPPLY VOLTAGE
1.
Turn ignition switch OFF.
2.
Make sure that starter motor connector F27 terminal 2 connection is clean and tight.
3.
Check voltage between starter motor connector F27 terminal 2
and ground.
Is there battery voltage present?
YES
>> GO TO 2
NO
>> Check harness between battery and starter motor for
open circuit.
2.
CHECK BATTERY CABLE (VOLTAGE DROP TEST)
1.
Shift the transmission into park or neutral.
2.
Check voltage between battery positive terminal and starter
motor connector F27 terminal 2 while cranking the engine.
Is the voltage drop less than 0.2V?
YES
>> GO TO 3
NO
>> Check harness between the battery and the starter
motor for high resistance.
3.
CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
Check voltage between starter motor case and battery negative ter-
minal while cranking the engine.
Is the voltage drop less than 0.2V?
YES
>> Terminal 2 circuit is OK. Further inspection necessary.
.
NO
>> Check the starter motor case to engine mounting for
high resistance.
(+)
(-)
Condition
Voltage
Connector
Terminal
F27
2
Ground
While cranking the
engine
Battery voltage
AWBIA0122GB
(+)
(-)
Condition
Voltage
Connector
Terminal
F27
2
Battery (+)
terminal
While cranking the
engine
Less than 0.2V
AWBIA0123GB
(+)
(-)
Condition
Voltage
Starter motor
case
Battery (-) terminal
While cranking the
engine
Less than 0.2V
AWBIA0124GB
STR-20
< COMPONENT DIAGNOSIS >
[MR18DE]
S CONNECTOR CIRCUIT
S CONNECTOR CIRCUIT
Description
INFOID:0000000001728569
Terminal "1" (S) is the power supply for the starter motor magnetic switch. Terminal 1 is supplied with power
when the ignition switch is turned to the START position while the selector lever is in the P or N position.
Diagnosis Procedure
INFOID:0000000001728570
CAUTION:
Perform diagnosis under the condition that 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 STARTER MOTOR MAGNETIC SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect starter motor connector F28.
3.
Shift transmission into park or neutral.
4.
Check voltage between starter motor harness connector F28
terminal 1 and ground with the ignition in START.
Is battery voltage present?
YES
>> Magnetic switch circuit is OK. Further inspection necessary. Refer to
.
NO
>> GO TO 2
2.
CHECK CONNECTOR
1.
Turn ignition switch OFF.
2.
Check the IPDM E/R harness connector E44 and starter motor harness connector F28 for damage, bent
pins and loose connections.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair the terminal and connector.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect IPDM E/R connector E44 and starter motor connec-
tor F28.
2.
Check continuity between starter motor harness connector F28
(A) terminal 1 and IPDM E/R harness connector E44 (B) termi-
nal 19.
3.
Check continuity between starter motor harness connector F28
(A) terminal 1 and ground.
Are the continuity test results as specified?
YES
>> Further inspection necessary. Refer to
NO
>> Repair the harness.
(+)
(-)
Condition
Voltage
Connector
Terminal
F28
1
Ground
While cranking the
engine
Battery voltage
AWBIA0125GB
A
B
Continiuty
Connector
Terminal
Connector
Terminal
F28
1
E44
19
Yes
A
—
Continiuty
Connector
Terminal
F28
1
Ground
No
AWBIA0126GB
STARTING SYSTEM
STR-21
< COMPONENT DIAGNOSIS >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
STARTING SYSTEM
Wiring Diagram
INFOID:0000000001728571
AWBWA0019GB
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