Nissan Primera P11. Instruction — part 101
YEC809
ACCELERATOR
POSITION SEN-
SOR
: Detectable line for DTC
: Non-detectable line for DTC
ECM
TROUBLE DIAGNOSIS 12
CD20T
Accelerator Position Sensor & Switch
(Cont’d)
EC-109
YEC810
: Detectable line for DTC
: Non-detectable line for DTC
ACCELERATOR
WORK UNIT
ECM
RELEASED
DEPRESSED
TROUBLE DIAGNOSIS 12
CD20T
Accelerator Position Sensor & Switch
(Cont’d)
EC-110
DIAGNOSTIC PROCEDURE
INSPECTION START
(Accelerator position sensor)
CHECK POWER SUPPLY.
1. Turn ignition switch to “LOCK” position.
2. Disconnect accelerator position sensor
harness connector.
3. Turn ignition switch to “ON” position.
4. Check voltage between accelerator posi-
tion sensor connector terminal
p
5
and
ground with CONSULT-II or voltage
tester.
Voltage: Approximately 5V
OK
E
NG
Check the following:
●
Harness connectors
M50
,
F104
●
Harness for open or
short-circuit between
ECM and accelerator
position sensor.
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to “LOCK” position.
2. Check harness continuity between accel-
erator position sensor connector terminal
p
4
and engine ground.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Check the following:
●
Harness connectors
M50
,
F104
●
Harness for open or
short-circuit between
ECM and accelerator
position sensor.
If NG, repair harness or
connectors.
CHECK INPUT SIGNAL CIRCUIT.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM
terminal
434
and accelerator position
sensor connector terminal
p
2
.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Check the following
●
Harness connectors
M50
,
F104
●
Harness for open or
short-circuit between
ECM and accelerator
position sensor
If NG, repair harness or
connectors.
CHECK COMPONENT
(Accelerator position sensor).
Refer to “COMPONENT INSPECTION”
EC-CD-113.
OK
E
NG
Replace accelerator pedal
assembly.
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
NEF823
Accelerator position
sensor harness con-
nector
Accelerator
pedal
NEF824
Accelerator position
sensor connector
NEF825
Accelerator position
sensor connector
NEF209A
Accelerator position
sensor connector
H
H
H
H
H
H
H
TROUBLE DIAGNOSIS 12
CD20T
Accelerator Position Sensor & Switch
(Cont’d)
EC-111
DIAGNOSTIC PROCEDURE
INSPECTION START
(Accelerator position switch)
CHECK OVERALL FUNCTION.
1. Turn ignition switch to “ON”
position.
2. Check “OFF ACCEL POS” in
“DATA MONITOR” mode with
CONSULT-II.
Accelerator pedal released:
ON
Accelerator pedal depressed:
OFF
------------------------------------------------------------------------------------------------------------------------------- OR -------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to “LOCK”
position.
2. Check continuity between ECM
connector terminal
435
and
ground.
Continuity:
Accelerator pedal released:
No
Accelerator pedal depressed:
Yes
NG
E
OK
INSPECTION END
CHECK GROUND CIRCUIT.
1. Disconnect accelerator switch harness
connector.
2. Check harness continuity between
accelerator switch connector terminal
p
1
and ECM connector terminal
426
.
Continuity should exist.
OK
E
NG
Check the following:
●
Harness connectors
M52
,
F103
●
Harness for open circuit
between accelerator switch
and ECM connector termi-
nal
426
.
If NG, repair harness or con-
nectors.
CHECK INPUT SIGNAL CIRCUIT.
Check harness continuity between ECM
connector terminal
435
and accelerator
switch connector terminal
p
3
.
Continuity should exist.
OK
E
NG
Check the following:
●
Harness connectors
F103
,
M52
●
Harness for open or short-
circuit between accelerator
switch and ECM
CHECK COMPONENT
(Accelerator switch).
Refer to “COMPONENT INSPECTION”
on next page.
OK
E
NG
Replace accelerator switch.
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
PEF123W
NEF210A
NEF212A
Accelerator
switch con-
nector
NEF211A
Accelerator
switch connector
H
H
H
H
H
H
H
TROUBLE DIAGNOSIS 12
CD20T
Accelerator Position Sensor & Switch
(Cont’d)
EC-112
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