Nissan Quest E52. Instruction — part 1191
STR-14
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
DTC/CIRCUIT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000009650605
The “B” terminal is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000009650606
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 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 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
or
STR-12, "Work Flow (Without GR8-1200 NI)"
.
NO
>> Check the starter motor case and ground for poor continuity.
Terminals
Voltage (Approx.)
(+)
(–)
Starter motor “B” terminal
Terminal
F10
2 Ground
Battery
voltage
Terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor
“B” terminal
Terminal
Battery positive terminal
F10
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 CONNECTOR CIRCUIT
STR-15
< DTC/CIRCUIT DIAGNOSIS >
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S CONNECTOR CIRCUIT
Description
INFOID:0000000009650607
The starter motor magnetic switch is supplied with power when the ignition switch is turned to the START posi-
tion while the selector lever is in the P or N position.
Diagnosis Procedure
INFOID:0000000009650608
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 starter motor connector.
3.
Shift selector lever to “P” or “N” position.
4.
Check voltage between starter motor harness connector and ground.
Is the inspection result normal?
YES
>> “S” connector circuit is OK. Further inspection is necessary. Refer to
STR-12, "Work Flow (Without GR8-1200 NI)"
NO
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect IPDM E/R connector.
2.
Check continuity between starter motor harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES
>> Further inspection is necessary. Refer to
STR-9, "Work Flow (With GR8-1200 NI)"
"Work Flow (Without GR8-1200 NI)"
.
NO
>> Repair the harness.
terminals
Condition
Voltage (Approx.)
(+)
(–)
Starter motor har-
ness connector
Terminal
F47
1 Ground
When the ignition switch is in
START position
Battery voltage
Starter motor harness connector
IPDM E/R harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F47
1
F12
80
Existed
STR-16
< SYMPTOM DIAGNOSIS >
STARTING SYSTEM
SYMPTOM DIAGNOSIS
STARTING SYSTEM
Symptom Table
INFOID:0000000009650609
Symptom
Reference
No normal cranking
Refer to
STR-9, "Work Flow (With GR8-1200 NI)"
or
"Work Flow (Without GR8-1200 NI)"
Starter motor does not rotate
STARTER MOTOR
STR-17
< REMOVAL AND INSTALLATION >
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P
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REMOVAL AND INSTALLATION
STARTER MOTOR
Exploded View
INFOID:0000000009650610
REMOVAL
DISASSEMBLY
1.
Converter housing
2.
Starter motor mounting bolt
3.
“B” terminal harness
4.
“B” terminal harness nut
5.
“S” terminal harness connector
6.
Starter motor
: Vehicle front
: N·m (kg-m, in-lb)
: N·m (kg-m, ft-lb)
JMBIA3731GB
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