Nissan 240SX — Automatic Transmission (Section AT) (2000 year). Manual — part 13

4

CHECK A/T MODE SWITCH CIRCUIT (With CONSULT-II)

With CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Select “TCM INPUT SIGNALS”.
3. Read out “POWER SHIFT SW”. Make sure the selector lever switch position is indicated properly.

SAT417K

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

GO TO 6.

5

CHECK A/T MODE SWITCH CIRCUIT (Without CONSULT-II)

Without CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM harness connector M26 terminal Nos. 43 (GY), 44 (L/B) and ground when A/T mode

switch is “ON” and “OFF”.

SAT120KA

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

GO TO 6.

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TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-193

6

DETECT MALFUNCTIONING ITEM

Check the following items:

I

A/T mode switch

a. Check continuity between two terminals.

SAT121KA

I

Harness for short or open between TCM and A/T mode switch (Main harness)

I

Harness of ground circuit for A/T mode switch (Main harness) for short or open

OK or NG

OK (With CONSULT-II)

©

GO TO 7.

OK (Without CONSULT-
II)

©

GO TO 8.

NG

©

Repair or replace damaged parts.

7

CHECK THROTTLE POSITION SWITCH CIRCUIT (With CONSULT-II)

With CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal.

Check the signal of throttle position switch is indicated properly.

MTBL0011

SAT646J

OK or NG

OK

©

GO TO 9.

NG

©

Check the following items:

I

Throttle position switch
Refer to “Component Inspection”, AT-197.

I

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

I

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

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-194

8

CHECK THROTTLE POSITION SWITCH CIRCUIT (Without CONSULT-II)

Without CONSULT-II

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between TCM harness connector M25 terminals No. 16 (LG), 17 (R) and ground while depressing, and

releasing accelerator pedal slowly. (after warming up engine)

MTBL0637

SAT526JC

OK or NG

OK

©

GO TO 9.

NG

©

Check the following items:

I

Throttle position switch
Refer to “Component Inspection”, AT-197.

I

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

I

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

9

CHECK DTC

Perform Diagnostic procedure, AT-190.

OK or NG

OK

©

INSPECTION END

NG

©

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-

nector.

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TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-195

SAT418K

COMPONENT INSPECTION

NMAT0204S04

Overdrive Control Switch

NMAT0204S0401

I

Check continuity.

Terminal

Connector

Switch posi-

tion

Terminal No. (Wire color)

Continuity

B8

OD “ON”

1 (L/B)

2 (B)

No

OD “OFF”

Yes

SAT517GB

SAT843BI

Park/Neutral Position Switch

NMAT0204S0402

1.

Check continuity.

Terminal

Connector

Select lever

position

Terminal No. (Wire color)

Continuity

E22

P, N

1 (B)

2 (BR)

Yes

E23

P

3 (B)

4 (L)

R

3 (B)

5 (G)

N

3 (B)

6 (W)

D

3 (B)

7 (Y)

2

3 (B)

8 (R)

1

3 (B)

9 (OR)

SAT807B

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-207.

SAT386HF

4.

If NG on step 2, remove PNP switch from A/T and check con-
tinuity of PNP switch terminals. Refer to step 1.

5.

If OK on step 4, adjust PNP switch. Refer to AT-206.

6.

If NG on step 4, replace PNP switch.

TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-196

SAT230JA

A/T Mode Switch

NMAT0204S0406

I

Check continuity.

Terminal

Connector

Switch position

Terminal No. (Wire color)

Continuity

M41

POWER

ON

2

3

Yes

OFF

No

SNOW

ON

1

2

Yes

OFF

No

SAT851JC

Throttle Position Switch

NMAT0204S0403

Closed Throttle Position Switch (Idle Position)

I

Check continuity.

Terminals

Connector

Accelerator

pedal condi-

tion

Terminal No. (Wire color)

Continuity

F34

Released

4 (LG)

5 (G/OR)

Yes

Depressed

No

I

To adjust closed throttle position switch, refer to EC-50, “Basic
Inspection”.

SAT852JC

Wide Open Throttle Position Switch

I

Check continuity.

Terminals

Connector

Accelerator

pedal condi-

tion

Terminal No. (Wire color)

Continuity

F34

Released

5 (G/OR)

6 (R)

No

Depressed

Yes

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TROUBLE DIAGNOSES FOR SYMPTOMS

24. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control, A/T Check and TP Switches Circuit Checks) (Cont’d)

AT-197

Description

NMAT0093

I

The mechanical key interlock mechanism also operates as a
shift lock:
With the key switch turned to “ON”, the selector lever cannot
be shifted from “P” (parking) to any other position unless the
brake pedal is depressed.
With the key removed, the selector lever cannot be shifted
from “P” to any other position.
The key cannot be removed unless the selector lever is placed
in “P”.

I

The shift lock and key interlock mechanisms are controlled by
the ON-OFF operation of the shift lock solenoid and by the
operation of the rotator and slider located inside the key
cylinder, respectively.

JAT419K

A/T SHIFT LOCK SYSTEM

Description

AT-198

Wiring Diagram — SHIFT —

NMAT0094

TAT268

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A/T SHIFT LOCK SYSTEM

Wiring Diagram — SHIFT —

AT-199

Diagnostic Procedure

NMAT0095

SYMPTOM 1:

I

Selector lever cannot be moved from “P” position with key
in “ON” position and brake pedal applied.

I

Selector lever can be moved from “P” position with key in
“ON” position and brake pedal released.

I

Selector lever can be moved from “P” position when key
is removed from key cylinder.

SYMPTOM 2:
Ignition key cannot be removed when selector lever is set to
“P” position. It can be removed when selector lever is set to
any position except “P”.

1

CHECK KEY INTERLOCK CABLE

Check key interlock cable for damage.

OK or NG

OK

©

GO TO 2.

NG

©

Repair key interlock cable. Refer to “Key Interlock Cable”, AT-203.

2

CHECK SELECTOR LEVER POSITION

Check selector lever position for damage.

OK or NG

OK

©

GO TO 3.

NG

©

Check selector lever. Refer to “ON-VEHICLE SERVICE — PNP Switch and Manual Con-
trol Linkage Adjustment”, AT-206 and AT-207.

3

CHECK POWER SOURCE

1. Turn ignition switch to “ON” position.

(Do not start engine.)

2. Check voltage between shift lock brake switch harness connector M24 terminal No. 1 (G) and ground.

SAT420K

Does battery voltage exist?

Yes

©

GO TO 4.

No

©

Check the following items:

I

Harness for short or open between battery and shift lock brake switch harness termi-
nal 1

I

Fuse

I

Ignition switch (Refer to EL-7, “Schematic”.)

A/T SHIFT LOCK SYSTEM

Diagnostic Procedure

AT-200

4

CHECK INPUT SIGNAL (BRAKE SWITCH)

Turn ignition switch to “ON” position.
(Do not start engine.)

I

Check voltage between A/T device harness connector B8 terminal No. 5 (L/OR) and ground.

Voltage:

Brake pedal depressed:

0V

Brake pedal released:

Battery voltage

SAT421K

OK or NG

OK

©

GO TO 5.

NG

©

Check the following items:

I

Harness for short or open between A/T device harness connector B8 terminal No. 5
(L/OR) and shift lock brake switch harness connector M24 terminal No. 2 (L/OR)

I

Shift lock brake switch
(Refer to “Component Check”, AT-202.)

5

CHECK GROUND CIRCUIT

1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector B8 terminal No. 6 (B) and ground.

SAT422K

OK or NG

OK

©

GO TO 6.

NG

©

Repair harness or connector.

6

CHECK PARK POSITION SWITCH

(Refer to “Component Check”, AT-202.)

OK or NG

OK

©

GO TO 7.

NG

©

Replace park position switch.

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A/T SHIFT LOCK SYSTEM

Diagnostic Procedure (Cont’d)

AT-201

7

CHECK SHIFT LOCK SOLENOID

(Refer to “Component Check”, AT-202.)

OK or NG

OK

©

GO TO 8.

NG

©

Replace shift lock solenoid.

8

CHECK SHIFT LOCK OPERATION

1. Reconnect shift lock harness connector.
2. Turn ignition switch from “OFF” to “ON” position. (Do not start engine.)
3. Recheck shift lock operation.

OK or NG

OK

©

INSPECTION END

NG

©

1. Perform A/T device input/output signal inspection test.
2. If NG, recheck harness connector connection.

SAT423K

Component Check

NMAT0096

SHIFT LOCK SOLENOID

NMAT0096S01

I

Check operation by applying battery voltage between shift lock
solenoid harness connector B201 terminal No. 2 (B) and A/T
device harness connector B8 terminal No. 5 (L/OR).

SAT424K

PARK POSITION SWITCH

NMAT0096S02

I

Check continuity between park position switch harness con-
nector B201 terminal No. 2 (L) and A/T device harness con-
nector B8 terminal No. 6 (B).

Condition

Continuity

When selector lever is set in “P” position and selector
lever button is released

Yes

Except above

No

SAT425K

SHIFT LOCK BRAKE SWITCH

NMAT0096S03

I

Check continuity between shift lock brake switch harness con-
nector M24 terminal Nos. 1 (G) and 2 (L/OR).

Condition

Continuity

When brake pedal is depressed

No

When brake pedal is released

Yes

Check shift lock brake switch after adjusting brake pedal —
refer to BR-12, “Adjustment”.

A/T SHIFT LOCK SYSTEM

Diagnostic Procedure (Cont’d)

AT-202

JAT426K

JAT427K

Removal

NMAT0098

CAUTION:

I

Install key interlock cable in such a way that it will not be
damaged by sharp bends, twists or interference with adja-
cent parts.

I

After installing key interlock cable to control device, make
sure that casing cap and bracket are firmly secured in
their positions. If casing cap can be removed with an
external load of less than 39.2 N (4.0 kg, 8.8 lb), replace
key interlock cable with new one.

Unlock slider from adjuster holder and remove rod from cable.

JAT428K

Installation

NMAT0099

1.

Set key interlock cable to steering lock assembly and install
lock plate.

2.

Set selector lever to P position.

3.

Insert interlock rod into adjuster holder.

4.

Install casing cap to bracket.

5.

Move slider in order to fix adjuster holder to interlock rod.

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KEY INTERLOCK CABLE

Removal

AT-203

Control Device

NMAT0261

JAT429K

SHIFT CONTROL SYSTEM

Control Device

AT-204

JAT430K

Control Valve Assembly and Accumulators

NMAT0100

REMOVAL

NMAT0100S01

1.

Drain ATF.

2.

Remove oil pan and gasket.

3.

Remove oil strainer.

SAT353B

4.

Remove control valve assembly by removing fixing bolts and
disconnecting harness connector.

Bolt length and location

Bolt symbol



mm (in)

A

33 (1.30)

B

45 (1.77)

5.

Remove solenoids and valves from valve body if necessary.

6.

Remove terminal cord assembly if necessary.

SAT074BA

7.

Remove accumulator A, B, C and D by applying compressed
air if necessary.

I

Hold each piston with rag.

8.

Reinstall any part removed.

I

Always use new sealing parts.

JAT432K

Revolution Sensor Replacement

NMAT0210

I

Remove revolution sensor from A/T.

I

Always use new sealing parts.

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ON-VEHICLE SERVICE

Control Valve Assembly and Accumulators

AT-205

JAT433K

Rear Oil Seal Replacement

NMAT0211

1.

Remove propeller shaft. Refer to PD-4, “Components”.

2.

Remove rear oil seal.

JAT434K

3.

Install rear oil seal.

I

Apply ATF before installing.

4.

Reinstall all removed parts.

I

Always use new sealing parts.

SAT078B

Parking Pawl Components Inspection

NMAT0213

1.

Remove propeller shaft from vehicle. Refer to PD-4, “Compo-
nents”.

2.

Support A/T assembly with a jack.

3.

Remove rear engine mounting member. Tighten rear engine
mounting member to the specified torque. Refer to EM-66,
“Removal”.

4.

Remove rear extension assembly.

5.

Replace parking components if necessary.

6.

Reinstall any part removed.

I

Always use new sealing parts.

SAT081B

Park/Neutral Position Switch Adjustment

NMAT0104

1.

Remove manual control linkage from manual shaft of A/T
assembly.

2.

Set manual shaft of A/T assembly in “N” position.

3.

Loosen PNP switch fixing bolts.

4.

Insert pin into adjustment holes in both PNP switch and
manual shaft of A/T assembly as near vertical as possible.

5.

Reinstall any part removed.

6.

Check continuity of PNP switch. Refer to “Components
Inspection”, AT-196.

ON-VEHICLE SERVICE

Rear Oil Seal Replacement

AT-206

Manual Control Linkage Adjustment

NMAT0105

Move the selector lever from the “P” position to “1” position. You
should be able to feel the detents in each position.
If the detents cannot be felt or the pointer indicating the position is
improperly aligned, the linkage needs adjustment.
1.

Place selector lever in “P” position.

2.

Loosen lock nuts.

SAT293AA

3.

Tighten lock nut X until it touches trunnion, pulling selector
lever toward “R” position side without pushing button.

4.

Back off lock nut X 1 turn and tighten lock nut Y to the speci-
fied torque.

Lock nut

: 11 - 15 N·m (1.1 - 1.5 kg-m, 8 - 11 ft-lb)

5.

Move selector lever from “P” position to “1” position. Make sure
that selector lever can move smoothly.

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ON-VEHICLE SERVICE

Manual Control Linkage Adjustment

AT-207

Removal

NMAT0214

JAT435K

1.

Remove battery negative terminal.

2.

Remove exhaust tube.

3.

Remove fluid charging pipe from A/T assembly.

4.

Remove fluid cooler pipe from A/T assembly.

5.

Plug up openings such as the fluid charging pipe hole, etc.

6.

Remove propeller shaft. Refer to PD-4, “Components”.

I

Insert plug into rear oil seal after removing rear propeller
shaft.

I

Be careful not to damage spline, sleeve yoke and rear oil
seal.

7.

Remove A/T control cable from A/T assembly.

8.

Disconnect PNP switch, solenoid and revolution sensor har-
ness connectors.

JAT436K

9.

Remove air breather hose.

10. Remove starter motor.
11. Remove dust cover from A/T assembly.
12. Remove bolts securing torque converter to drive plate.

I

Remove the bolts by turning crankshaft.

REMOVAL AND INSTALLATION

Removal

AT-208