Nissan Primera P11. Manual - 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