Nissan Silvia. Manual - part 11

HOW TO ERASE SELF-DIAGNOSTIC RESULTS

(WITHOUT CONSULT-II)

NMAT0206S05

If the ignition switch stays “ON” after repair work, be sure to
turn ignition switch “OFF” once. Wait for at least 5 seconds and
then turn it “ON” again.

Perform “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)’’. Refer to AT-37.

Turn ignition switch “OFF”. (The self-diagnostic results will be
erased.)

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

Diagnostic Procedure Without CONSULT-II (Cont’d)

AT-41

SAT631IB

Introduction

NMAT0019

SAT632I

SEF234G

The TCM receives a signal from the vehicle-speed sensor, throttle
(accelerator) position sensor or inhibitor switch and provides shift
control or lock-up control via solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good
operating condition and be free of valve seizure, solenoid valve
malfunction, etc.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this
case, careful checking of suspected circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the problems. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the “Work Flow”. Refer to AT-46.
Before undertaking actual checks, take a few minutes to talk with
a customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such problems, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A “Diagnostic Worksheet” like the
example (AT-44) should be used.
Start your diagnosis by looking for “conventional” problems first.
This will help troubleshoot driveability problems on an electronically
controlled engine vehicle.
Also check related Service bulletins.

TROUBLE DIAGNOSIS — INTRODUCTION

Introduction

AT-42

DIAGNOSTIC WORKSHEET

=NMAT0019S01

Information From Customer

NMAT0019S0101

KEY POINTS
WHAT ..... Vehicle & A/T model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms

Customer name

MR/MS

Model & Year

VIN

Trans. model

Engine

Mileage

Incident Date

Manuf. Date

In Service Date

Frequency

Continuous

Intermittent (

times a day)

Symptoms

Vehicle does not move.

(

Any position

Particular position)

No up-shift

(

1st

2nd

3rd

O/D)

No down-shift

(

O/D

3rd

2nd

1st)

Lockup malfunction

Shift point too high or too low.

Shift shock or slip

(

Lockup

Any drive position)

Noise or vibration

No kickdown

No pattern select

Others

(

)

POWER indicator lamp

Blinks for about 8 seconds.

Continuously lit

Not lit

Malfunction indicator lamp (MIL)

Continuously lit

Not lit

IDX

TROUBLE DIAGNOSIS — INTRODUCTION

Introduction (Cont’d)

AT-43

Diagnostic Worksheet

=NMAT0019S0102

Read the Fail-safe and listen to customer complaints.

AT-5

A/T FLUID CHECK

AT-9

Leakage (Follow specified procedure)

Fluid condition

Fluid level

Perform STALL TEST and LINE PRESSURE TEST.

AT-48, AT-51

Stall test — Mark possible damaged components/others.

Torque converter one-way clutch

Reverse clutch

Forward clutch

Overrun clutch

Forward one-way clutch

Low & reverse brake

Low one-way clutch

Engine

Line pressure is low

Clutches and brakes except high clutch and

brake band are OK

Line pressure test — Suspected parts:

Perform all ROAD TEST and mark required procedures.

AT-52

4-1.

Check before engine is started.

AT-53

SELF-DIAGNOSTIC PROCEDURE — Mark detected items.

Vehicle speed sensor·A/T (Revolution sensor), AT-89.

Vehicle speed sensor·MTR, AT-95.

Throttle position sensor, AT-98.

Shift solenoid valve A, AT-106.

Shift solenoid valve B, AT-111.

Overrun clutch solenoid valve, AT-116.

Torque converter clutch solenoid valve, AT-120.

A/T fluid temperature sensor and TCM power source, AT-125.

Engine speed signal, AT-132.

Line pressure solenoid valve, AT-136.

Control unit (RAM), control unit (ROM), AT-142.

Control unit (EEPROM), AT-144.

PNP, overdrive control, A/T mode and throttle position switches, AT-189.

Battery

Others

4-2.

Check at idle

AT-55

1. POWER Indicator Lamp Does Not Come On, AT-149.

2. POWER or SNOW Indicator Lamp Does Not Come On, AT-150.

3. O/D OFF Indicator Lamp Does Not Come On, AT-151.

4. POWER Indicator Lamp Does Not Come On, AT-152.

5. Engine Cannot Be Started In “P” And “N” Position, AT-153.

6. In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-154.

7. In “N” Position, Vehicle Moves, AT-155.

8. Large Shock. “N”

“R” Position, AT-157.

9. Vehicle Does Not Creep Backward In “R” Position, AT-159.

10. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT-162.

TROUBLE DIAGNOSIS — INTRODUCTION

Introduction (Cont’d)

AT-44

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