Nissan Teana J32. Manual — part 1114
STR-6
< FUNCTION DIAGNOSIS >
STARTING SYSTEM
VQ25DE : Component Description
INFOID:0000000003860420
VQ35DE
VQ35DE : System Diagram
INFOID:0000000003860421
VQ35DE : System Description
INFOID:0000000003860422
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.
1.
Park/neutral position switch
2.
Starter motor
3.
IPDM E/R
A.
CVT assembly
B.
Engine room dash panel (LH)
Component part
Description
Park/neutral position switch
Park/neutral position switch supplies power to the starter relay in-
side IPDM E/R when the selector lever is shifted to the P or N po-
sition.
IPDM E/R
CPU inside IPDM E/R controls the starter relay. Ignition relay in-
side IPDM E/R supplies power to the park/neutral position switch
when ignition switch is ON or START.
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.
JPBIA1665GB
STARTING SYSTEM
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< FUNCTION DIAGNOSIS >
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STR
N
P
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VQ35DE : Component Parts Location
INFOID:0000000003860423
VQ35DE : Component Description
INFOID:0000000003860424
1.
Starter motor
2.
BCM
3.
TCM
4.
IPDM E/R
A.
Converter housing
B.
Behind the combination meter
C.
Engine room dash panel (LH)
JPBIA1756ZZ
Component part
Description
TCM
TCM supplies power to the starter relay and starter control relay
inside IPDM E/R when the selector lever is shifted to the P or N
position.
BCM
BCM controls the starter relay inside IPDM E/R.
IPDM E/R
CPU inside IPDM E/R controls the starter control relay.
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.
STR-8
< COMPONENT DIAGNOSIS >
B TERMINAL CIRCUIT
COMPONENT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000003860425
The “B” terminal is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000003860426
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 “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 “B” terminal 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 the selector lever to “P” or “N” position.
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 the starter motor for poor continuity.
3.
CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1.
Shift the selector lever to “P” or “N” position.
2.
Check voltage between starter motor case and battery negative terminal.
Is the inspection result normal?
YES
>> “B” terminal circuit is OK. Further inspection is necessary. Refer to
.
NO
>> Check the starter motor case and ground for poor continuity.
Terminals
Voltage (Approx.)
(+)
(–)
Starter motor “B” terminal
Terminal
F49 (VQ25DE)
F10 (VQ35DE)
2 Ground
Battery
voltage
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor
“B” terminal
Terminal
Battery positive terminal
F49 (VQ25DE)
F10 (VQ35DE)
2
When the ignition switch is
in START position
Less than
0.5 V
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor case
Battery negative terminal
When the ignition switch is in
START position
Less than 0.2 V
S TERMINAL CIRCUIT
STR-9
< COMPONENT DIAGNOSIS >
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S TERMINAL CIRCUIT
Description
INFOID:0000000003860427
The starter motor magnetic switch is supplied with power when the ignition switch is turned to START with the
selector lever “P” or “N”.
Diagnosis Procedure
INFOID:0000000003860428
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 “S” CONNECTOR CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect “S” terminal.
3.
Shift the selector lever to “P” or “N” position.
4.
Check voltage between starter motor harness connector and ground.
Is the inspection result normal?
YES
>> “S” terminal circuit is OK. Further inspection is necessary. Refer to
.
NO
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect IPDM E/R connector.
2.
Check continuity between starter motor “S” terminal and IPDM E/R harness connector.
Is the inspection result normal?
YES
>> Inspect IPDM E/R and power supply circuit. Refer to
NO
>> Repair the harness.
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor harness
connector
Terminal
F50 (VQ25DE)
F47 (VQ35DE)
1 Ground
When the ignition switch
is in START position
Battery voltage
Starter motor “S” terminal
IPDM E/R harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F50 (VQ25DE)
F47 (VQ35DE)
1
E10
80
Existed
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