Nissan Terrano r20e. Manual - part 16

 

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Nissan Terrano r20e. Manual - part 16

 

 

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 accelerator

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-88.

OK

E

NG

Repair or replace dam-
aged parts.

Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-60.

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

YAT299

H

H

H

H

TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN

Throttle (Accelerator) Position Sensor (Cont’d)

AT-61

Wiring Diagram — AT — SSV/A

YAT280

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

AT-62

Shift Solenoid Valve A

DESCRIPTION

Shift solenoid valves A and B are turned “ON” or “OFF” by the TCM
in response to signals sent from the park/neutral position switch,
vehicle speed and throttle position sensors. Gears will then be
shifted to the optimum position.

Gear position

1

2

3

4

Shift solenoid valve A

ON

OFF

OFF

ON

Shift solenoid valve B

ON

ON

OFF

OFF

ON BOARD DIAGNOSIS LOGIC

Diagnostic trouble code

Malfunction is detected when ...

Check items

(Possible cause)

:

SHIFT SOLENOID/V A

TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.

I

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

I

Shift solenoid valve A

:

4th judgement flicker

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 in D

1

,

D

2

position.

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

1)

Start engine.

2)

Drive vehicle in D

1

,

D

2

position.

3)

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

SAT341H

YAT343

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

AT-63

DIAGNOSTIC PROCEDURE

CHECK GROUND CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly con-

nector in engine compartment.

3. Check resistance between terminal

q

2

and ground.
Resistance: 20 - 40

OK

E

NG

1. Remove control valve

assembly. Refer to
AT-113.

2. Check the following

items:

I

Shift solenoid valve A
Refer to “COMPONENT
INSPECTION” below.

I

Harness of terminal cord
assembly for short or
open

CHECK POWER SOURCE CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal

q

2

and TCM harness connector terminal

q

11

.

Resistance:

Approximately 0

If OK, check harness for short to
ground and short to power.

4. Reinstall any part removed.

OK

E

NG

Repair open circuit or short
to ground or short to power
in harness or connector.

Perform “SELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDURE”, AT-63.

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

COMPONENT INSPECTION

Shift solenoid valve A

I

For removal, refer to AT-139.

Resistance check

I

Check resistance between terminal

q

2

and ground.

Solenoid valve

Terminal No.

Resistance

(Approx.)

Shift solenoid
valve A

q

2

Ground

20 - 40

Operation check

I

Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal

q

2

and ground.

YAT300

YAT301

YAT302

YAT303

H

H

H

TROUBLE DIAGNOSIS FOR SHIFT SOLENOID/V A

Shift Solenoid Valve A (Cont’d)

AT-64

 

 

 

 

 

 

 

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