Nissan Frontier D40. Instruction — part 1020
B TERMINAL CIRCUIT
STR-13
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
COMPONENT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000005276063
Terminal "2" (B) is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000005276064
Regarding Wiring Diagram information, refer to
STR-18, "Wiring Diagram - VQ40DE - With Clutch Interlock
STR-24, "Wiring Diagram - VQ40DE - Without Clutch Interlock Cancel Switch"
.
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 E210 terminal 2 connection is clean and tight.
3.
Check voltage between starter motor connector E210 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 E210 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)
(+)
(-)
Voltage
Connector
Terminal
E210
2
Ground
Battery voltage
AWBIA0122GB
(-)
(+)
Condition
Voltage
Connector
Terminal
E210
2
Battery (+)
terminal
While cranking the
engine
Less than 0.2V
AWBIA0123GB
STR-14
< COMPONENT DIAGNOSIS >
B TERMINAL CIRCUIT
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
Starter motor
case
Battery (-) terminal
While cranking the
engine
Less than 0.2V
AWBIA0124GB
S CONNECTOR CIRCUIT
STR-15
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
S CONNECTOR CIRCUIT
QR25DE
QR25DE : Description
INFOID:0000000005276065
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.
QR25DE : Diagnosis Procedure
INFOID:0000000005276066
Regarding Wiring Diagram information, refer to
STR-28, "Wiring Diagram - QR25DE"
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 E211.
3.
Shift transmission into park or neutral.
4.
Check voltage between starter motor harness connector E211
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 E120 and starter motor harness connector E211 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 E120 and starter motor con-
nector E211.
2.
Check continuity between starter motor harness connector E211
(A) terminal 1 and IPDM E/R harness connector E120 (B) termi-
nal 19.
3.
Check continuity between starter motor harness connector E211
(A) terminal 1 and ground.
(+)
(-)
Condition
Voltage
Connector
Terminal
E211
1
Ground
While cranking the
engine
Battery voltage
AWBIA0437ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
E211
1
E120
19
Yes
AWBIA0438ZZ
STR-16
< COMPONENT DIAGNOSIS >
S CONNECTOR CIRCUIT
Are the continuity test results as specified?
YES
>> Further inspection necessary. Refer to
NO
>> Repair the harness.
VQ40DE
VQ40DE : Description
INFOID:0000000005276067
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.
VQ40DE : Diagnosis Procedure
INFOID:0000000005276068
Regarding Wiring Diagram information, refer to
STR-18, "Wiring Diagram - VQ40DE - With Clutch Interlock
STR-24, "Wiring Diagram - VQ40DE - Without Clutch Interlock Cancel Switch"
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 E207.
3.
Shift transmission into park or neutral.
4.
Check voltage between starter motor harness connector E207
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 E120 and starter motor harness connector E207 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)
A
—
Continuity
Connector
Terminal
E211
1
Ground
No
(+)
(-)
Condition
Voltage
Connector
Terminal
E207
1
Ground
While cranking the
engine
Battery voltage
AWBIA0343ZZ
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