Infiniti I30 (A33). Manual — part 14
O/D OFF indicator lamp:
2nd judgement flicker is longer than others.
SAT439F
Vehicle speed sensor circuit is short-circuited or disconnected.
⇒
Go to VEHICLE SPEED SENSOR·MTR, AT-203.
3rd judgement flicker is longer than others.
SAT441F
Throttle position sensor circuit is short-circuited or disconnected.
⇒
Go to THROTTLE POSITION SENSOR, AT-182.
4th judgement flicker is longer than others.
SAT443F
Shift solenoid valve A circuit is short-circuited or disconnected.
⇒
Go to SHIFT SOLENOID VALVE A, AT-172.
5th judgement flicker is longer than others.
SAT445F
Shift solenoid valve B circuit is short-circuited or disconnected.
⇒
Go to SHIFT SOLENOID VALVE B, AT-177.
6th judgement flicker is longer than others.
SAT447F
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to OVERRUN CLUTCH SOLENOID VALVE, AT-191.
7th judgement flicker is longer than others.
SAT449F
Torque converter clutch solenoid valve circuit is short-circuited
or disconnected.
⇒
Go to TORQUE CONVERTER CLUTCH SOLENOID
VALVE, AT-151.
GI
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EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-53
O/D OFF indicator lamp:
8th judgement flicker is longer than others.
SAT451F
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
⇒
Go to A/T FLUID TEMPERATURE SENSOR AND TCM
POWER SOURCE, AT-196.
9th judgement flicker is longer than others.
SAT453F
Engine speed signal circuit is short-circuited or disconnected.
⇒
Go to ENGINE SPEED SIGNAL, AT-119.
10th judgement flicker is longer than others.
SAT455F
Line pressure solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to LINE PRESSURE SOLENOID VALVE, AT-166.
11th judgement flicker is longer than others.
SAT599J
The ECM-A/T communication line is open or shorted.
⇒
Go to A/T COMMUNICATION LINE, AT-208.
Lamp comes on.
SAT367J
Park/neutral position (PNP) switch, overdrive control switch or
throttle position switch circuit is disconnected or TCM is dam-
aged.
⇒
Go to 21. TCM Self-diagnosis Does Not Activate (Park/
neutral position (PNP), Overdrive Control and Throttle Posi-
tion Switch Circuit Checks), AT-260.
Flickers as shown below.
SAT457F
Battery power is low.
Battery has been disconnected for a long time.
Battery is connected conversely.
(When reconnecting TCM connectors. — This is not a problem.)
t
1
= 2.5 seconds t
2
= 2.0 seconds t
3
= 1.0 second t
4
= 1.0 second
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-54
SAT631IA
Introduction
NHAT0024
SAT632I
SEF234G
The TCM receives a signal from the vehicle speed sensor, throttle
position sensor or park/neutral position (PNP) switch and provides
shift control or lock-up control via A/T solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
A/T system for malfunction-diagnostic purposes. The TCM is
capable of diagnosing malfunctioning parts while the ECM can
store malfunctions in its memory.
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 GST) or a circuit tester connected should
be performed. Follow the “Work Flow”. Refer to AT-59.
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 “DIAGNOSITC WORKSHEET”
like the example (AT-56) 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 for information.
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TROUBLE DIAGNOSIS — INTRODUCTION
Introduction
AT-55
DIAGNOSTIC WORKSHEET
=NHAT0024S01
Information from Customer
NHAT0024S0101
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
l
Continuous
l
Intermittent (
times a day)
Symptoms
l
Vehicle does not move.
(
l
Any position
l
Particular position)
l
No up-shift
(
l
1st
,
2nd
l
2nd
,
3rd
l
3rd
,
O/D)
l
No down-shift
(
l
O/D
,
3rd
l
3rd
,
2nd
l
2nd
,
1st)
l
Lockup malfunction
l
Shift point too high or too low.
l
Shift shock or slip
(
l
N
,
D
l
Lockup
l
Any drive position)
l
Noise or vibration
l
No kickdown
l
No pattern select
l
Others
(
)
O/D OFF indicator lamp
Blinks for about 8 seconds.
l
Continuously lit
l
Not lit
Malfunction indicator lamp (MIL)
l
Continuously lit
l
Not lit
TROUBLE DIAGNOSIS — INTRODUCTION
Introduction (Cont’d)
AT-56
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