Nissan Pathfinder. Manual — part 1134
STR-16
< DTC/CIRCUIT DIAGNOSIS >
B TERMINAL CIRCUIT
DTC/CIRCUIT DIAGNOSIS
B TERMINAL CIRCUIT
Description
INFOID:0000000009178431
Terminal “B” is constantly supplied with battery power.
Diagnosis Procedure
INFOID:0000000009178432
Regarding Wiring Diagram information, refer to
.
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 ”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” (Park) or ”N” (Neutral) 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 starter motor for continuity.
3.
CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1. Shift selector lever to ”P” (Park) or ”N” (Neutral) position.
2. Check voltage between starter motor case and battery negative terminal.
Is the inspection result normal?
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-17
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
YES
>> “B” terminal circuit is OK. Further inspection is necessary. Refer to
STR-13, "Work Flow (Without GR8-1200 NI)"
NO
>> Check the starter motor case to engine mounting for high resistance.
STR-18
< DTC/CIRCUIT DIAGNOSIS >
S CONNECTOR CIRCUIT
S CONNECTOR CIRCUIT
Description
INFOID:0000000009178433
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 (Park) or N (Neutral) position.
Diagnosis Procedure
INFOID:0000000009178434
Regarding Wiring Diagram information, refer to
.
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” (Park) or “N” (Neutral) position.
4. Check voltage between starter motor harness connector and ground.
Is the inspection result normal?
YES
>> “S” circuit is OK. Further inspection is necessary. Refer to
STR-10, "Work Flow (With GR8-1200
STR-13, "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 the IPDM E/R harness connector.
3. Check continuity between starter motor terminal S and ground.
Is the inspection result normal?
YES
>> Further inspection is necessary. Refer to
STR-10, "Work Flow (With GR8-1200 NI)"
"Work Flow (Without GR8-1200 NI)"
.
NO
>> Repair or replace the harness or connectors.
(+)
(-)
Condition
Voltage
(Approx.)
Connector Terminal
F28
S
Ground
When the ignition switch is in START position
Battery voltage
Starter motor harness connector
IPDM E/R harness connector
Continuity
Connector
Terminal
Connector
Terminal
F28
S
F17
51
Yes
Connector Terminal
—
Continuity
F28
S
Ground
No
STARTING SYSTEM
STR-19
< SYMPTOM DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
A
STR
N
P
O
SYMPTOM DIAGNOSIS
STARTING SYSTEM
Symptom Table
INFOID:0000000009178435
Symptom
Reference
No normal cranking
STR-10, "Work Flow (With GR8-1200 NI)"
"Work Flow (Without GR8-1200 NI)"
Starter motor does not rotate
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