TROUBLE DIAGNOSIS
AT-93
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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
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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
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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
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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
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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" .
DTC P0735 A/T 5TH GEAR FUNCTION
AT-123
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Revision: 2006 November2007 350Z
DTC P0735 A/T 5TH GEAR FUNCTIONPFP:31940
DescriptionNCS001SV
This malfunction is detected when the A/T does not shift into 5th 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 LogicNCS001SW
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P0735 A/T 5TH GR FNCTN” with CONSULT-III or 22th judgment flicker without
CONSULT-III is detected when TCM detects any inconsistency in the actual gear ratio.
Possible CauseNCS001SX
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 ProcedureNCS001SY
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 “5TH GR FNCTN P0735” 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: “5” 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 P0735 is shown, refer to “AT- 8 6 , "
Display Items List" ”.
If “COMPLETED RESULT NG” is detected, go to AT- 1 2 4 , "
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 P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE
AT-151
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Revision: 2006 November2007 350Z
DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVEPFP:31940
DescriptionNCS0006C
High and low reverse clutch solenoid valve is controlled by the TCM in response to signals sent from the PNP
switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then
be shifted to the optimum position.
CONSULT-III Reference ValueNCS0006D
On Board Diagnosis LogicNCS0006E
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P1767 HLR/C SOL/CIRC” with CONSULT-III or 8th judgment flicker without
CONSULT-III is detected under the following conditions.
–When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
–When TCM detects as irregular by comparing target value with monitor value.
Possible CauseNCS0006F
Harness or connectors
(Solenoid circuit is open or shorted.)
High and low reverse clutch solenoid valve
DTC Confirmation ProcedureNCS0006G
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. Turn ignition switch ON.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III
and check monitor “ACCELE POSI”, “SLCT LVR POSI” and “GEAR”.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
ACCELE POSI: 1.5/8 – 2.0/8
SLCT LVR POSI: “D” position
GEAR: “2” “3” (HLR/C ON/OFF)
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
6. If DTC is detected, go to AT- 1 5 2 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
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
AT-152
DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE
Revision: 2006 November2007 350Z
Diagnostic ProcedureNCS0006H
1. CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine.
4. Read out the value of “HLR/C SOL” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 6 2 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer to AT- 2 1 5 , "Control Valve with TCM and A/T Fluid Temper-
ature Sensor 2" .
NG >> Repair or replace damaged parts.
4. CHECK TCM
Perform AT- 1 5 1 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name ConditionDisplay value
(Approx.)
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