2007 NISSAN 350Z brake sensor

AT-88
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
DATA MONITOR MODE
Display Items List
X: Standard, —: Not applicable, : Option
Monitored item (Unit)Monitor Item Selection
Remarks
ECU INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
VHCL/S SE-A/T (km/h) X X Revolution sensor
VHCL/S SE-MTR (km/h) X —
ACCELE POSI (0.0/8) X — Accelerator pedal position signal
THROTTLE POSI (0.0/8) X XDegree of opening for accelerator recognized by
the TCM.
For fail-safe operation, the specific value used for
control is displayed.
CLSD THL POS (ON/OFF) X —
Signal input with CAN communications.
W/O THL POS (ON/OFF) X —
BRAKE SW (ON/OFF) X — Stop lamp switch
GEAR — XGear position recognized by the TCM updated
after gear-shifting.
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X X
OUTPUT REV (rpm) X X
GEAR RATIO — X
TC SLIP SPEED (rpm) — XDifference between engine speed and torque
converter input shaft speed.
F SUN GR REV (rpm) — —
F CARR GR REV (rpm) — —
ATF TEMP SE 1 (V) X —
ATF TEMP SE 2 (V) X —
ATF TEMP 1 (°C) — X
ATF TEMP 2 (°C) — X
BATTERY VOLT (V) X —
ATF PRES SW 1 (ON/OFF) X X (for FR/B solenoid)
ATF PRES SW 2 (ON/OFF) X X (for LC/B solenoid)
ATF PRES SW 3 (ON/OFF) X X (for I/C solenoid)
ATF PRES SW 5 (ON/OFF) X X (for D/C solenoid)
ATF PRES SW 6 (ON/OFF) X X (for HLR/C solenoid)
PNP SW 1 (ON/OFF) X —
PNP SW 2 (ON/OFF) X —
PNP SW 3 (ON/OFF) X —
PNP SW 4 (ON/OFF) X —
1 POSITION SW (ON/OFF) X —

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 P1730 A/T INTERLOCK
AT-141
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Revision: 2006 November2007 350Z
DTC P1730 A/T INTERLOCKPFP:00000
DescriptionNCS00050
Fail-safe function to detect interlock conditions.
On Board Diagnosis LogicNCS00051

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P1730 A/T INTERLOCK” with CONSULT-III or 12th judgment flicker without
CONSULT-III is detected when TCM does not receive the proper voltage signal from the sensor and
switch.

TCM monitors and compares gear position and conditions of each ATF pressure switch when gear is
steady.
Possible CauseNCS00052

Harness or connectors
(Solenoid and switch circuit is open or shorted.)

Low coast brake solenoid valve

ATF pressure switch 2
DTC Confirmation ProcedureNCS00053
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
SLCT LVR POSI: “D” position
6. If DTC is detected, go to AT- 1 4 2 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Judgment of A/T InterlockNCS00054

When A/T Interlock is judged to be malfunctioning, the vehicle should be fixed in 2nd gear, and should be
set in a condition in which it can travel.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed,
but this is not a turbine revolution sensor malfunction.

When interlock is detected at the 3rd gear or more, it is locked at the 2nd gear.

AT-142
DTC P1730 A/T INTERLOCK
Revision: 2006 November2007 350Z
Diagnostic ProcedureNCS00055
1. SELF-DIAGNOSIS
With CONSULT-III
1. Drive vehicle.
2. Stop vehicle and turn ignition switch OFF.
3. Turn ignition switch ON.
4. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-III.
Without CONSULT-III
1. Drive vehicle.
2. Stop vehicle and turn ignition switch OFF.
3. Turn ignition switch ON.
4. Perform self-diagnosis. Refer to AT- 9 2 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .
OK or NG
OK >> GO TO 2.
NG >> Check low coast brake solenoid valve circuit and function. Refer to AT- 1 5 3 , "
DTC P1772 LOW
COAST BRAKE SOLENOID VALVE" , AT- 1 5 5 , "DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION" .
2. CHECK DTC
Perform AT- 1 4 1 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3. 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 4.
NG >> Repair or replace damaged parts.
4. 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.

DTC P1731 A/T 1ST ENGINE BRAKING
AT-143
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Revision: 2006 November2007 350Z
DTC P1731 A/T 1ST ENGINE BRAKINGPFP:00000
DescriptionNCS00056
Fail-safe function to prevent sudden decrease in speed by engine brake other than at M1 position.
CONSULT-III Reference ValueNCS00057
On Board Diagnosis LogicNCS00058

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “P1731 A/T 1ST E/BRAKING” with CONSULT-III or 13th judgment flicker without
CONSULT-III is detected under the following conditions.
–When TCM does not receive the proper voltage signal from the sensor.
–When TCM monitors each ATF pressure switch and solenoid monitor value, and detects as irregular when
engine brake of 1st gear acts other than at M1 position.
Possible CauseNCS00059

Harness or connectors
(The sensor circuit is open or shorted.)

Low coast brake solenoid valve

ATF pressure switch 2
DTC Confirmation ProcedureNCS0005A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously preformed, 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 “ENGINE SPEED”, “MANU MODE SW” and “GEAR”.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
ENGINE SPEED: 1,200 rpm
MANU MODE SW: ON
GEAR: “1” position
6. If DTC is detected, go to AT- 1 4 4 , "
Diagnostic Procedure" .
Item name Condition Display value
ON OFF SOLLow coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF
ATF PRES SW 2Low coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF

AT-144
DTC P1731 A/T 1ST ENGINE BRAKING
Revision: 2006 November2007 350Z
Diagnostic ProcedureNCS0005B
1. CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Drive vehicle in the “M” position (1st gear), and confirm the ON/OFF actuation of “ATF PRES SW 2” and
“ON OFF SOL”.
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 DTC
Perform AT- 1 4 3 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ON OFF SOLLow coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF
ATF PRES SW 2Low coast brake engaged. Refer to AT- 1 9
.ON
Low coast brake disengaged. Refer to AT- 1 9
.OFF

DTC P1757 FRONT BRAKE SOLENOID VALVE
AT-147
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Revision: 2006 November2007 350Z
DTC P1757 FRONT BRAKE SOLENOID VALVEPFP:31940
DescriptionNCS0005O
Front brake 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 ValueNCS0005P
On Board Diagnosis LogicNCS0005Q

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P1757 FR/B SOLENOID/CIRC” with CONSULT-III or 6th 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 CauseNCS0005R

Harness or connectors
(Solenoid circuit is open or shorted.)

Front brake solenoid valve
DTC Confirmation ProcedureNCS0005S
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 preforming 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: “3”
“4” (FR/B 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 4 8 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
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

AT-148
DTC P1757 FRONT BRAKE SOLENOID VALVE
Revision: 2006 November2007 350Z
Diagnostic ProcedureNCS0005T
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 “FR/B SOLENOID” 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 DTC
Perform AT- 1 4 7 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name ConditionDisplay value
(Approx.)
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