Nissan Terrano model r20 series 2004. Manual - part 228

CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH CIRCUIT.

1. Turn ignition switch to “ON” posi-

tion.
(Do not start engine.)

2. Select “ECU INPUT SIGNALS” in

Data Monitor.

3. Read out “CLOSED THL/SW” and

“W/O THRL/P-SW” depressing
and releasing accelerator pedal.
Check the signal of throttle (accel-
erator) position switch is indicated
properly.

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

1. Turn ignition switch to “ON” posi-

tion.
(Do not start engine.)

2. Check voltage between TCM ter-

minals

and ground while

depressing, and releasing accel-
erator pedal slowly. (after warming
up engine)

Check the following items:

Throttle (accelerator)
position switch
Refer to “COMPONENT
INSPECTION”, AT-119.

Harness for short or
open between ignition
switch and throttle
(accelerator) position
switch (Main harness)

Harness for short or
open between throttle
(accelerator) position
switch and TCM (Main
harness)

Perform “DIAGNOSTIC PROCEDURE”,
AT-94.

1. Perform TCM input/

output signal inspection.

2. If NG, recheck TCM pin

terminals for damage or
loose connection with
harness connector.

INSPECTION END

Accelerator

pedal condi-

tion

Data monitor

CLOSED

THL/SW

W/O THRL/

P-SW

Released

OFF

Fully

depressed

OFF

Accelerator

pedal

condition

Voltage

Terminal

No.

Terminal No.

Released

Battery
voltage

1V or less

Fully

depressed

1V or less

Battery
voltage

YAT328

YAT329

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)

AT-96

COMPONENT INSPECTION

Overdrive control switch

Check continuity between terminals

and

Switch position

Continuity

OFF

Yes

A/T mode switch

Check continuity between terminals

, (

) and

Switch position

Terminal No.

Continuity

—

Yes

OFF

—

Yes

OFF

Park/neutral position switch

1. Check continuity between terminals

and

and between

terminals

and

while moving man-

ual shaft through each position.

Lever position

Terminal No.

—

2. If NG, check again with manual control linkage disconnected

from manual shaft of A/T assembly. Refer to step 1.

3. If OK on step 2, adjust manual control linkage. Refer to AT-117.

4. If NG on step 2, remove park/neutral position switch from A/T

and check continuity of park/neutral position switch terminals.
Refer to step 1.

5. If OK on step 4, adjust park/neutral position switch. Refer to

AT-119.

6. If NG on step 4, replace park/neutral position switch.

NAT265

YAT422

SAT517GB

YAT423

YAT424

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)

AT-97

Throttle (accelerator) position switch

Closed throttle position switch (idle position)

Check continuity between terminals

and

Accelerator pedal condition

Continuity

Released

Yes

Depressed

To adjust closed throttle (accelerator) position switch, refer to
EC section (“Basic Inspection”, “TROUBLE DIAGNOSIS —
Basic Inspection”).

Wide open throttle position switch

Check continuity between terminals

and

Accelerator pedal condition

Continuity

Released

Depressed

Yes

A/T fluid temperature switch

1. Make sure the A/T fluid warning lamp lights when the key is

inserted and turned to “ON”.

2. Make sure the A/T fluid warning lamp goes off when turning the

ignition switch to “ON”.

3. For removal, refer to AT-118.
4. Check resistance between terminal

and ground while

changing temperature as shown at left.

Temperature °C (°F)

Continuity

140 (284) or more

Yes

140 (284) or less

YAT425

YAT426

YAT335

TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS

Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)

AT-98

1. SPORT Indicator Lamp Does Not Come On

SYMPTOM:

POWER indicator lamp does not come on for about 2 seconds
when turning ignition switch to “ON”.

CHECK TCM POWER SOURCE.
1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM terminals

and ground.

Battery voltage should exist.

Check the following items:

Harness for short or
open between ignition
switch and TCM (Main
harness)

Ignition switch and fuse
Refer to EL section
(“POWER SUPPLY
ROUTING”).

CHECK TCM GROUND CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between TCM termi-

nals

and ground.

Resistance:

Approximately 0

Ω

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

Repair open circuit or short
to ground or short to
power in harness or con-
nector.

CHECK LAMP CIRCUIT.
1. Turn ignition switch to “ON” position.
2. Set overdrive control, A/T check or

power switch to “ON” position.

3. Check voltage between TCM terminal

and ground.

Voltage: Battery voltage

4. Reinstall any part removed.

Check the following items:

Fuse (7.5A)

SPORT indicator lamp
Refer to EL section
(“WARNING LAMPS”).

Harness for short or
open between ignition
switch and SPORT indi-
cator lamp (Main har-
ness)
Refer to EL section
(“POWER SUPPLY
ROUTING”).

Harness for short or
open between SPORT
indicator lamp and TCM

Check again.

1. Perform TCM input/

output signal inspection.

2. If NG, recheck TCM pin

terminals for damage or
loose connection with
harness connector.

INSPECTION END

YAT427

YAT428

YAT429

DIAGNOSTIC PROCEDURES FOR SYMPTOMS

AT-99

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