Infiniti QX4 (R50). Manual — part 13
3
JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to “1” position.
2. Release the overdrive control switch.
3. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be “ON”).
4. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be “OFF”).
5. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be “ON”) until directed to release the
switch.
SAT970I
6. Depress accelerator pedal fully and release it.
7. Release the overdrive control switch (the O/D OFF indicator lamp will begin to flash “ON” and “OFF”).
SAT981F
©
GO TO 4.
4
CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp.
Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-50.
SAT133K
©
DIAGNOSIS END
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-49
JUDGEMENT OF SELF-DIAGNOSIS CODE
NBAT0206S04
O/D OFF indicator lamp:
All judgement flickers are same.
SAT666I
All circuits that can be confirmed by self-diagnosis are OK.
1st judgement flicker is longer than others.
SAT667I
Revolution sensor circuit is short-circuited or disconnected.
⇒
Go to DTC P0720 VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR), AT-111.
2nd judgement flicker is longer than others.
SAT668I
Vehicle speed sensor circuit is short-circuited or disconnected.
⇒
Go to DTC VEHICLE SPEED SENSOR·MTR, AT-197.
3rd judgement flicker is longer than others.
SAT669I
Throttle position sensor circuit is short-circuited or disconnected.
⇒
Go to DTC P1705 THROTTLE POSITION SENSOR,
4th judgement flicker is longer than others.
SAT670I
Shift solenoid valve A circuit is short-circuited or disconnected.
⇒
Go to DTC P0750 SHIFT SOLENOID VALVE A, AT-168.
5th judgement flicker is longer than others.
SAT671I
Shift solenoid valve B circuit is short-circuited or disconnected.
⇒
Go to DTC P0755 SHIFT SOLENOID VALVE B, AT-172.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-50
O/D OFF indicator lamp:
6th judgement flicker is longer than others.
SAT672I
Overrun clutch solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to DTC P1760 OVERRUN CLUTCH SOLENOID VALVE,
7th judgement flicker is longer than others.
SAT673I
Torque converter clutch solenoid valve circuit is short-circuited
or disconnected.
⇒
Go to DTC P0740 TORQUE CONVERTER CLUTCH SOLE-
NOID VALVE, AT-148.
8th judgement flicker is longer than others.
SAT674I
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.
⇒
Go to DTC BATT/FLUID TEMP SEN (A/T FLUID TEM-
PERATURE SENSOR AND TCM POWER SOURCE), AT-190.
9th judgement flicker is longer than others.
SAT675I
Engine speed signal circuit is short-circuited or disconnected.
⇒
Go to DTC P0725 ENGINE SPEED SIGNAL, AT-116.
10th judgement flicker is longer than others.
SAT676I
Turbine revolution sensor circuit is short-circuited or discon-
nected.
⇒
Go to DTC Turbine Revolution Sensor, AT-202.
11th judgement flicker is longer than others.
SAT677I
Line pressure solenoid valve circuit is short-circuited or discon-
nected.
⇒
Go to DTC P0745 LINE PRESSURE SOLENOID VALVE,
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont’d)
AT-51
O/D OFF indicator lamp:
12th judgement flicker is longer than others.
SAT678I
The ECM-A/T communication line is open or shorted.
⇒
Go to DTC A/T Communication Line, AT-207.
Flickers as shown below.
SAT679I
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.)
Lamp comes on.
SAT367J
PNP switch, overdrive control switch or throttle position switch
circuit is disconnected or TCM is damaged.
⇒
Go to 21. TCM Self-diagnosis Does Not Activate (PNP,
OVERDRIVE CONTROL AND THROTTLE POSITION
SWITCHES), AT-257.
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-52
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