Infiniti G20 (P11). Manual — part 13
DTC work support item
Description
Check items (Possible cause)
4TH GR FNCTN P0734
Following items for “A/T 4th gear function (P0734)” can be con-
firmed.
I
Self-diagnosis status (whether the diagnosis is being con-
ducted or not)
I
Self-diagnosis result (OK or NG)
I
Shift solenoid valve A
I
Shift solenoid valve B
I
Overrun clutch solenoid valve
I
Line pressure solenoid valve
I
Each clutch
I
Hydraulic control circuit
TCC S/V FNCTN P0744
Following items for “A/T TCC S/V function (lock-up) (P0744)”
can be confirmed.
I
Self-diagnosis status (whether the diagnosis is being con-
ducted or not)
I
Self-diagnosis result (OK or NG)
I
Torque converter clutch sole-
noid valve
I
Each clutch
I
Hydraulic control circuit
DIAGNOSTIC PROCEDURE WITHOUT CONSULT-II
NCAT0022S07
OBD-II Self-diagnostic Procedure (With GST)
NCAT0022S0701
Refer to EC-101, section “Generic Scan Tool (GST)”.
OBD-II Self-diagnostic Procedure (No Tools)
NCAT0022S0702
Refer to EC-81, “Malfunction Indicator Lamp (MIL)”.
SAT491J
SAT851J
TCM Self-diagnostic Procedure (No Tools)
NCAT0022S0703
Preparation
1.
Turn ignition switch to “OFF” position.
2.
Connect the handy type vacuum pump to the throttle opener
and apply vacuum −25.3 kPa (−190 mmHg, −7.48 inHg).
3.
Disconnect the throttle position switch harness connector.
4.
Turn ignition switch to “ON” position.
5.
Check continuity of the closed throttle position switch.
Continuity should exist.
(If continuity does not exist, check throttle opener and
closed throttle position switch. Then increase vacuum
until closed throttle position switch shows continuity.)
6.
Go to “TCM self-diagnostic procedure (No tools)”.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-49
1
CHECK O/D OFF INDICATOR LAMP
1. Move selector lever in “P” position.
Start the engine.
Warm engine to normal operating temperature.
2. Turn ignition switch to “OFF” position.
3. Wait 5 seconds.
SAT967I
4. Turn ignition switch to “ON” position.
(Do not start engine.)
5. Does O/D OFF indicator lamp come on for about 2 seconds?
SAT490J
Yes or No
Yes
©
GO TO 2.
No
©
Go to “1. O/D OFF Indicator Lamp Does Not Come On”, AT-225.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-50
2
JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to “OFF” position.
2. Turn ignition switch to “ACC” position.
3. Move selector lever from “P” to “D” position.
4. Turn ignition switch to “ON” position.
(Do not start engine.)
5. Depress and hold overdrive control switch in “OFF” position (the O/D OFF indicator lamp will be “ON”) until directed to
release the switch.
(If O/D OFF indicator lamp does not come on, go to step on AT-263.)
6. Turn ignition switch to “OFF” position.
SAT968I
7. Turn ignition switch to “ON” position.
(Do not start engine.)
8. Release the overdrive control switch (the O/D OFF indicator lamp will be “OFF”).
9. Wait 2 seconds.
10. Move the selector lever to “2” position.
11. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be “ON”).
12. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be “OFF”) until directed to release the
switch.
SAT969I
©
GO TO 3.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-51
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.
SAT981F
7. Release the overdrive control switch (the O/D OFF indicator lamp will begin to flash “ON” and “OFF”).
©
GO TO 4.
4
CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp. Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-53.
SAT490J
©
DIAGNOSIS END
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
AT-52
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