AT-82
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
72 OthersEngine speed does
not return to idle.
Refer to AT-195,
"Engine Speed Does
Not Return to Idle" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Direct clutch solenoid valveAT- 1 4 9
3. Front brake solenoid valveAT- 1 4 7
4. Accelerator pedal position sensorAT- 1 3 1
5. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 9
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Front brake (brake band)AT- 2 5 59. Direct clutchAT- 2 8 8
No. Items Symptom Condition Diagnostic ItemReference
page
TROUBLE DIAGNOSIS
AT-85
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
I/C SOLENOIDInput clutch disengaged. Refer to AT- 1 9 . 0.6 – 0.8 A
Input clutch engaged. Refer to AT- 1 9
. 0 – 0.05 A
FR/B SOLENOIDFront brake engaged. Refer to AT- 1 9
. 0.6 – 0.8 A
Front brake disengaged. Refer to AT- 1 9
. 0 – 0.05 A
D/C SOLENOIDDirect clutch disengaged. Refer to AT- 1 9
. 0.6 – 0.8 A
Direct clutch engaged. Refer to AT- 1 9
. 0 – 0.05 A
HLR/C SOLHigh and low reverse clutch disengaged. Refer to AT- 1 9
. 0.6 – 0.8 A
High and low reverse clutch engaged. Refer to AT- 1 9
. 0 – 0.05 A
ON OFF SOLLow coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: + side ON
Other than the above OFF
DOWN SW LEVERSelector lever: - side ON
Other than the above OFF
STARTER RELAYSelector lever in “N” and “P” positions. ON
Selector lever in other positions. OFF
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
CLSD THL POSReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POSFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
GEAR During driving 1, 2, 3, 4, 5 Item name Condition Display value (Approx.)
TROUBLE DIAGNOSIS
AT-91
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
DTC WORK SUPPORT MODE
Display Items List
Frequency (Hz) — —
The value measured by the pulse probe is dis-
played. DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — —Monitored item (Unit)Monitor Item Selection
Remarks
ECU INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
DTC work support item Description Check item
1ST GR FUNCTN P0731Following items for “1st gear function” can be confirmed.
Self-diagnosis status (whether the diagnosis is being performed or not)
Self-diagnostic results (OK or NG)
Input clutch solenoid
valve
Front brake solenoid
valve
Direct clutch solenoid
valve
High and low reverse
clutch solenoid valve
Each clutch
Hydraulic control circuit 2ND GR FUNCTN P0732Following items for “2nd gear function” can be confirmed.
Self-diagnosis status (whether the diagnosis is being performed or not)
Self-diagnostic results (OK or NG)
3RD GR FUNCTN P0733Following items for “3rd gear function” can be confirmed.
Self-diagnosis status (whether the diagnosis is being performed or not)
Self-diagnostic results (OK or NG)
4TH GR FUNCTN P0734Following items for “4th gear function” can be confirmed.
Self-diagnosis status (whether the diagnosis is being performed or not)
Self-diagnostic results (OK or NG)
5TH GR FUNCTN P0735Following items for “5th gear function” can be confirmed.
Self-diagnosis status (whether the diagnosis is being performed or not)
Self-diagnostic results (OK or NG)
TROUBLE DIAGNOSIS
AT-93
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
Judgment Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
Erase Self-diagnosis
In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.
However, this information is erased by turning ignition switch OFF after performing self-diagnostics or by
erasing the memory using the CONSULT-III.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT-108
12 A/T interlock AT- 1 4 1
2 Direct clutch solenoid valve AT-14913 A/T 1st engine braking AT- 1 4 3
3 Torque converter clutch solenoid valve AT- 1 2 514 Start signal AT- 9 7
4 Line pressure solenoid valve AT- 1 2 915 Accelerator pedal position sensor AT- 1 3 1
5 Input clutch solenoid valve AT- 1 4 516 Engine speed signal AT- 11 3
6 Front brake solenoid valve AT- 1 4 717 CAN communication line AT- 9 4
7 Low coast brake solenoid valve AT- 1 5 3 , AT-15518 1st gear function AT- 11 5
8 High and low reverse clutch solenoid valve AT- 1 5 119 2nd gear function AT- 11 7
9 PNP switch AT-10220 3rd gear function AT- 11 9
10 A/T fluid temperature sensor AT- 1 3 421 4th gear function AT-121
11 Turbine revolution sensor AT- 1 0 622 5th gear function AT-123
SCIA8153E
DTC P0731 A/T 1ST GEAR FUNCTION
AT-115
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
DTC P0731 A/T 1ST GEAR FUNCTIONPFP:31940
DescriptionNCS001SB
This malfunction is detected when the A/T does not shift into 1st gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagnosis LogicNCS001SC
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0731 A/T 1ST GR FNCTN” with CONSULT-III or 18th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseNCS001SD
Harness or connectors
(Solenoid circuits are open or shorted.)
Input clutch solenoid valve
Front brake solenoid valve
Direct clutch solenoid valve
High and low reverse clutch solenoid valve
Each clutch
Hydraulic control circuit
DTC Confirmation ProcedureNCS001SE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range.
ATF TEMP 1: 20°C – 140°C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “1ST GR FNCTN P0731” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “1” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0731 is shown, refer to “AT- 8 6 , "
Display Items List" ”.
If “COMPLETED RESULT NG” is detected, go to AT- 11 6 , "
Diagnostic Procedure" .
If “STOP VEHICLE” is detected, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.
–Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
–Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
52, "ROAD TEST" .
DTC P0732 A/T 2ND GEAR FUNCTION
AT-117
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
DTC P0732 A/T 2ND GEAR FUNCTIONPFP:31940
DescriptionNCS001SG
This malfunction is detected when the A/T does not shift into 2nd gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagnosis LogicNCS001SH
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0732 A/T 2ND GR FNCTN” with CONSULT-III or 19th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseNCS001SI
Harness or connectors
(Solenoid circuits are open or shorted.)
Input clutch solenoid valve
Front brake solenoid valve
Direct clutch solenoid valve
High and low reverse clutch solenoid valve
Each clutch
Hydraulic control circuit
DTC Confirmation ProcedureNCS001SJ
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range.
ATF TEMP 1: 20°C – 140°C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “2ND GR FNCTN P0732” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “2” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0732 is shown, refer to “AT- 8 6 , "
Display Items List" ”.
If “COMPLETED RESULT NG” is detected, go to AT- 11 8 , "
Diagnostic Procedure" .
If “STOP VEHICLE” is detected, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.
–Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
–Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
52, "ROAD TEST" .
DTC P0733 A/T 3RD GEAR FUNCTION
AT-119
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
DTC P0733 A/T 3RD GEAR FUNCTIONPFP:31940
DescriptionNCS001SL
This malfunction is detected when the A/T does not shift into 3rd gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagnosis LogicNCS001SM
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0733 A/T 3RD GR FNCTN” with CONSULT-III or 20th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseNCS001SN
Harness or connectors
(Solenoid circuits are open or shorted.)
Input clutch solenoid valve
Front brake solenoid valve
Direct clutch solenoid valve
High and low reverse clutch solenoid valve
Each clutch
Hydraulic control circuit
DTC Confirmation ProcedureNCS001SO
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range.
ATF TEMP 1: 20°C – 140°C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “3RD GR FNCTN P0733” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “3” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0732 is shown, refer to “AT- 8 6 , "
Display Items List" ”.
If “COMPLETED RESULT NG” is detected, go to AT- 1 2 0 , "
Diagnostic Procedure" .
If “STOP VEHICLE” is detected, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.
–Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
–Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
52, "ROAD TEST" .
DTC P0734 A/T 4TH GEAR FUNCTION
AT-121
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 November2007 350Z
DTC P0734 A/T 4TH GEAR FUNCTIONPFP:31940
DescriptionNCS001SQ
This malfunction is detected when the A/T does not shift into 4th gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunction such
as control valve sticking, improper solenoid valve operation.
On Board Diagnosis LogicNCS001SR
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0734 A/T 4TH GR FNCTN” with CONSULT-III or 21th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseNCS001SS
Harness or connectors
(Solenoid circuits are open or shorted.)
Input clutch solenoid valve
Front brake solenoid valve
Direct clutch solenoid valve
High and low reverse clutch solenoid valve
Each clutch
Hydraulic control circuit
DTC Confirmation ProcedureNCS001ST
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start the engine and select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that “ATF TEMP 1” is within the following range.
ATF TEMP 1: 20°C – 140°C
If out of range, drive vehicle to warm ATF or stop engine to cool ATF.
3. Select “4TH GR FNCTN P0734” of “DTC WORK SUPPORT” mode for “TRANSMISSION” with CON-
SULT-III.
4. Drive vehicle and maintain the following conditions.
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACCELE POSI: 0.6/8 or more
ENGINE SPEED: TURBINE REV − 50 rpm or more
TURBINE REV: 300 rpm or more
GEAR: “4” position
MANU MODE SW: ON
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.
CAUTION:
If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0734 is shown, refer to “AT- 8 6 , "
Display Items List" ”.
If “COMPLETED RESULT NG” is detected, go toAT- 1 2 2 , "
Diagnostic Procedure" .
If “STOP VEHICLE” is detected, go to the following step.
6. Stop vehicle.
7. Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.
–Touch “OK” to complete the inspection when normally shifted from the 1st to 5th gear.
–Touch “NG” when an unusual shift shock, etc. occurs in spite of shifting from the 1st to 5th gear. Go to AT-
52, "ROAD TEST" .