Nissan Primera P11. Instruction — part 92
DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to “LOCK” posi-
tion.
2. Disconnect ECM harness connector
and combination meter harness con-
nector.
3. Check harness continuity between
ECM connector terminal
417
and
combination meter connector termi-
nal
p
9
or
p
4
.
Continuity should exist.
If OK, check harness for short-cir-
cuit.
OK
E
NG
Check the following:
●
Harness connectors
M50
,
F104
●
Harness for open or
short-circuit between
ECM and combination
meter.
If NG, repair harness or
connectors.
CHECK SPEEDOMETER FUNCTION.
Make sure that speedometer functions
correctly.
OK
E
NG
Check the following:
●
Harness connectors
M50
,
F104
●
Harness for open or
short-circuit between
combination meter and
vehicle speed sensor
or ABS actuator and
electric unit (control
unit).
If NG, repair harness or
connectors.
Check vehicle speed
sensor or ABS actuator
and electric unit (control
unit) and its circuit.
Refer to EL section.
Disconnect and reconnect harness
connectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage
and check the connection of ECM har-
ness connector. Reconnect ECM har-
ness connector and retest.
INSPECTION END
YEC124A
H
H
H
H
H
TROUBLE DIAGNOSIS 3
CD20T
Vehicle Speed Sensor (VSS) (Cont’d)
EC-73
Control Sleeve Position Sensor (CSPS)
The control sleeve position sensor is installed on the electric
governor. It senses the position of control sleeve (rotor angle)
while the control sleeve is being driven by the electric governor,
and feeds it back to the ECM.
Malfunction is detected when .
Check Items
(Possible cause)
●
An excessively high or low voltage from the sensor is
detected by ECM.
. . . . . . . . . . . . . . . . . . . . . . . ...
●
An incorrect voltage signal from the sensor is detected by
ECM during engine running.
●
Harness or connectors
(The control sleeve position sensor circuit is open or
shorted.)
●
Control sleeve position sensor
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE
1)
Turn ignition switch to “ON” position and select “DATA
MONITOR” mode with CONSULT-II.
2)
Start engine and run it for at least 2 seconds at idle
speed.
SEF641S
Shaft
Sensor coil
NEF796
.
Electronic injection pump
harness connector (control
sleeve position sensor)
TROUBLE DIAGNOSIS 4
CD20T
EC-74
YEC802
INJECTION PUMP (CON-
TROL SLEEVE POSITION
SENSOR)
: Detectable line for DTC
: Non-detectable line for DTC
ECM
TROUBLE DIAGNOSIS 4
CD20T
Control Sleeve Position Sensor (CSPS)
(Cont’d)
EC-75
DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK POWER SUPPLY CIRCUIT.
1. Turn ignition switch to “LOCK” position.
2. Disconnect ECM harness connector and
electronic injection pump harness connec-
tor.
3. Check harness continuity between control
sleeve position sensor connector terminal
p
3
and ECM connector terminal
320
.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Repair harness or connec-
tors.
CHECK INPUT SIGNAL CIRCUIT.
Check harness continuity between control
sleeve position sensor connector terminal
p
2
and ECM terminal
321
.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Repair harness or connec-
tors.
CHECK REFERENCE SIGNAL CIRCUIT.
Check harness continuity between control
sleeve position sensor connector terminal
p
1
and ECM connector terminal
322
.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Repair harness or connec-
tors.
CHECK COMPONENT
(Control sleeve position sensor).
Refer to “COMPONENT INSPECTION” on
next page.
OK
E
NG
Have the injection pump
assembly serviced by an
authorised service represen-
tative.
Disconnect and reconnect harness connec-
tors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness con-
nector. Reconnect ECM harness connector
and retest.
INSPECTION END
NEF196A
Control sleeve position
sensor connector
NEF197A
Control sleeve position
sensor connector
NEF198A
Control sleeve position
sensor connector
H
H
H
H
H
H
H
TROUBLE DIAGNOSIS 4
CD20T
Control Sleeve Position Sensor (CSPS)
(Cont’d)
EC-76
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