Nissan Terrano model r20 series 2004. Manual - part 219

RHD MODELS

YAT267

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS (Cont’d)

AT-60

RHD MODELS

YAT402

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Wiring Diagram — AT — TPS (Cont’d)

AT-61

Throttle (Accelerator) Position Sensor

DESCRIPTION

The throttle (accelerator) position sensor detects the throttle valve
position and sends a signal to the TCM.

ON BOARD DIAGNOSIS LOGIC

Diagnostic trouble code

Malfunction is detected when ...

Check items

(Possible cause)

: THROTTLE POSI SEN

TCM receives an excessively low or
high voltage from the sensor.

I

Harness or connectors
(The sensor circuit is open or
shorted.)

I

Throttle (accelerator) position sensor

: 3rd judgement flicker

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Remarks: Specification data are reference values.

Monitor item

Condition

Specification

Throttle (accelerator) position sensor

Fully-closed throttle

Approximately 0.5V

Fully-open throttle

Approximately 4V

SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE

After the repair, perform the following procedure to confirm the
malfunction is eliminated.

1)

Start engine.

2)

Select “SELF-DIAG RESULTS” mode with CONSULT-II.

3)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/2 of the
full throttle position and driving for more than 3 seconds.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1)

Start engine.

2)

Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than
10 km/h (6 MPH), throttle opening greater than 1/2 of the
full throttle position and driving for more than 3 seconds.

3)

Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II), AT-15.

NAT262

SAT808H

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

AT-62

DIAGNOSTIC PROCEDURE

Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Refer to EC section [“Malfunction Indicator
Lamp (MIL)”, “ON BOARD DIAGNOSTIC
SYSTEM DESCRIPTION”].

OK

E

NG

Check throttle (accelerator)
position sensor circuit for
engine control. Refer to
EC section [“TROUBLE
DIAGNOSIS FOR “THRTL
(ACCEL) POSI SEN”].

CHECK INPUT SIGNAL.

1. Turn ignition switch to “ON” posi-

tion.
(Do not start engine.)

2. Select “ECU INPUT SIGNALS” in

Data Monitor.

3. Read out the value of “THRTL

POS SEN”.
Voltage:

Fully-closed throttle:

Approximately 0.5V

Fully-open throttle:

Approximately 4V

----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------

1. Turn ignition switch to “ON” posi-

tion. (Do not start engine.)

2. Check voltage between TCM ter-

minals

q

32

and

q

42

while accelera-

tor pedal is depressed slowly.
Voltage:

Fully-closed throttle valve:

Approximately 0.4V

Fully-open throttle valve:

Approximately 4V

(Voltage rises gradually in
response to throttle position)

OK

E

NG

Check harness for short or
open between ECM and
TCM regarding throttle
(accelerator) position sen-
sor circuit. (Main harness)

CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH.
Refer to “CHECK THROTTLE (ACCEL-
ERATOR) POSITION SWITCH”, AT-93.

OK

E

NG

Repair or replace dam-
aged parts.

Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-62.

OK

E

NG

1. Perform TCM input/

output signal inspection.

2. If NG, recheck TCM pin

terminals for damage or
loose connection with
harness connector.

INSPECTION END

YAT415

H

H

H

H

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Throttle (Accelerator) Position Sensor (Cont’d)

AT-63