Nissan Primera P11. Instruction — part 100
YEC808
INJECTION PUMP
(FUEL TEMPERATURE
SENSOR)
: Detectable line for DTC
: Non-detectable line for DTC
ECM
TROUBLE DIAGNOSIS 11
CD20T
Fuel Temperature Sensor (FTS) (Cont’d)
EC-105
DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to “LOCK” posi-
tion.
2. Disconnect fuel temperature sensor
harness connector.
3. Turn ignition switch to “ON” position.
4. Check voltage between injection
pump connector terminal
p
6
and
ground with CONSULT-II or voltage
tester.
Voltage:
Approximately 5V
OK
E
NG
Repair harness or con-
nectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to “LOCK” posi-
tion.
2. Check harness continuity between
injection pump connector terminal
p
5
and ECM connector terminals
335
,
436
.
Continuity should exist.
If OK, check harness for short-cir-
cuit.
OK
E
NG
Repair harness or con-
nectors.
CHECK COMPONENT
(Fuel temperature sensor).
Refer to “COMPONENT INSPECTION”
on next page.
OK
E
NG
Have the injection pump
assembly serviced by an
authorised service repre-
sentative.
Disconnect and reconnect harness
connectors in the circuits. 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
NEF818
.
Electronic injection
pump harness connector
(Fuel temperature sensor)
NEF819
Injection pump
connector
NEF208A
Injection pump
connector
F50
H
H
H
H
H
H
TROUBLE DIAGNOSIS 11
CD20T
Fuel Temperature Sensor (FTS) (Cont’d)
EC-106
COMPONENT INSPECTION
Fuel temperature sensor
Wait until fuel temperature sensor reaches room temperature.
Check resistance between terminals
p
5
and
p
6
.
Fuel temperature °C (°F)
Resistance k
Ω
25 (77)
Approximately 1.9
If NG, have the injection pump assembly serviced by an autho-
rised service representative.
YEC366
TROUBLE DIAGNOSIS 11
CD20T
Fuel Temperature Sensor (FTS) (Cont’d)
EC-107
Accelerator Position Sensor & Switch
The accelerator position sensor is installed on the upper end of
the accelerator pedal assembly. The sensor detects the accel-
erator position and sends a signal to the ECM. The ECM uses
the signal to determine the amount of fuel to be injected.
Malfunction is detected when ...
Check Items
(Possible Cause)
●
An excessively low or high voltage from the sensor is
detected by the ECM.
●
Harness or connectors
(The sensor or switch circuit is open or shorted.)
●
Accelerator position sensor
●
Accelerator position switch
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE
1)
Turn ignition switch to “ON” position.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Depress accelerator pedal fully and keep it for at least
1 second. Then release it and wait at least 5 seconds.
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE (For accelerator stiching)
1)
Turn ignition switch to “ON” position.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and rev it up above 1,300 rpm.
4)
Depress brake pedal immediately after releasing
accelerator pedal and keep it at least 5 seconds.
NEF822
Output
voltage
between
terminal
No.
4
and
5
(V)
Throttle valve opening angle (deg)
TROUBLE DIAGNOSIS 12
CD20T
EC-108
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