Page 195 of 312

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-195
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Revision: 2006 November2007 350Z
Engine Speed Does Not Return to IdleNCS0008L
SYMPTOM:
When a shift-down is performed, the engine speed does not smoothly return to the idling speed.
DIAGNOSTIC PROCEDURE
1. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 2 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 8 6 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 9 2 , "Diagnostic Procedure
Without CONSULT-III"
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT- 8 6 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 9 3 ,
"Judgment Self-diagnosis Code" .
NO >> GO TO 3.
3. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 2 1 5 , "
Control Valve with TCM and A/T Fluid Temperature Sensor 2" .
2. Check A/T fluid condition. Refer to AT- 4 9 , "
A/T Fluid Condition Check" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 7.
4. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 5 9 ,
"Symptom Chart" (Symptom No. 72).
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK SYMPTOM
Check again. Refer to AT- 5 5 , "
Cruise Test — Part 1" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 8 3 , "
TCM Input/Output Signal Reference Values" .
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Page 198 of 312

AT-198
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
A/T Does Not Shift: 4th Gear → 3rd GearNCS0008O
SYMPTOM:
When shifted from M4 to M3 position in manual mode, does not downshift from 4th to 3rd gear.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 8 6 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 9 2 , "Diagnostic Procedure
Without CONSULT-III" .
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT- 8 6 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 9 3 ,
"Judgment Self-diagnosis Code" .
NO >> GO TO 2.
2. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 2 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3. CHECK A/T POSITION
Check A/T position. Refer to AT- 2 0 6 , "
Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust A/T position. Refer to AT- 2 0 6 , "
Adjustment of A/T Position" .
4. MANUAL MODE SWITCH
Check manual mode switch. Refer to AT- 1 5 7 , "
DTC P1815 MANUAL MODE SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 2 1 5 , "
Control Valve with TCM and A/T Fluid Temperature Sensor 2" .
2. Check A/T fluid condition. Refer to AT- 4 9 , "
A/T Fluid Condition Check" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 5 9 ,
"Symptom Chart" (Symptom No. 48).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK SYMPTOM
Check again. Refer to AT- 5 8 , "
Cruise Test — Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
Page 201 of 312

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-201
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Revision: 2006 November2007 350Z
A/T Does Not Shift: 2nd Gear → 1st GearNCS0008Q
SYMPTOM:
When shifted from M2 to M1 position in manual mode, does not downshift from 2nd to 1st gear.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 8 6 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 9 2 , "Diagnostic Procedure
Without CONSULT-III" .
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT- 8 6 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 9 3 ,
"Judgment Self-diagnosis Code" .
NO >> GO TO 2.
2. CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to AT- 1 2 , "
Checking A/T Fluid" .
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3. CHECK A/T POSITION
Check A/T position. Refer to AT- 2 0 6 , "
Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust A/T position. Refer to AT- 2 0 6 , "
Adjustment of A/T Position" .
4. MANUAL MODE SWITCH
Check manual mode switch. Refer to AT- 1 5 7 , "
DTC P1815 MANUAL MODE SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT- 2 1 5 , "
Control Valve with TCM and A/T Fluid Temperature Sensor 2" .
2. Check A/T fluid condition. Refer to AT- 4 9 , "
A/T Fluid Condition Check" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to AT- 5 9 ,
"Symptom Chart" (Symptom No. 50).
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK SYMPTOM
Check again. Refer to AT- 5 8 , "
Cruise Test — Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
Page 225 of 312

ON-VEHICLE SERVICE
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Revision: 2006 November2007 350Z
Installation
CAUTION:
After completing installation, check A/T fluid leakage and A/T fluid level. Refer to AT- 1 2 , "
Checking A/T
Fluid" .
1. Install A/T fluid temperature sensor 2 to bracket.
2. Install A/T fluid temperature sensor 2 (with bracket) in control
valve with TCM, and then tighten A/T fluid temperature sensor 2
bolt to the specified torque. Refer to AT- 2 1 5 , "
COMPONENTS" .
3. Connect A/T fluid temperature sensor 2 connector (1).
4. Securely fasten A/T fluid temperature sensor 2 harness with ter-
minal clip ( ).
5. Install oil pan to transmission case.
a. Install oil pan gasket to oil pan.
CAUTION:
Do not reuse oil pan gasket.
Install it in the direction to align hole positions.
Complete remove all moisture, oil and old gasket, etc. from oil pan gasket mounting surface.
b. Install oil pan (2) (with oil pan gasket) and clips (1) to transmis-
sion case.
: Vehicle front
: Oil pan mounting bolt
CAUTION:
Install it so that drain plug (3) comes to the position as
shown in the figure.
Be careful not to pinch harness.
SCIA5264E
SCIA5302E
SCIA8076E
SCIA8117E
Page 231 of 312
ON-VEHICLE SERVICE
AT-231
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Revision: 2006 November2007 350Z
INSTALLATION
CAUTION:
After completing installation, check A/T position, A/T fluid leakage and A/T fluid level. Refer to AT- 2 0 6 ,
"Checking of A/T Position" , AT- 1 2 , "Checking A/T Fluid" .
1. As shown in the figure, use a drift to drive rear oil seal into the
rear extension until it is flush.
CAUTION:
Do not reuse rear oil seal.
Apply ATF to rear oil seal.
2. Install return spring (1) to parking pawl (2).
3. Install parking pawl (with return spring) and pawl shaft to rear
extension.
4. Install parking actuator support to rear extension.
SCIA5311E
SCIA6180J
SCIA3424E
SCIA3423E
Page 234 of 312

AT-234
ON-VEHICLE SERVICE
Revision: 2006 November2007 350Z
Rear Oil SealNCS00094
REMOVAL
1. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "Removal and Installation" .
2. Remove rear propeller shaft. Refer to PR-6, "
Removal and Installation" .
CAUTION:
Do not impact or damage propeller shaft tube.
3. Remove rear oil seal using a flat-bladed screwdriver.
CAUTION:
Be careful not to scratch rear extension assembly.
INSTALLATION
CAUTION:
After completing installation, check A/T fluid leakage and A/T fluid level. Refer to AT- 1 2 , "
Checking A/T
Fluid" .
1. As shown in the figure, use the drift to drive rear oil seal into rear
extension assembly until it is flush.
CAUTION:
Do not reuse rear oil seal.
Apply ATF to rear oil seal.
2. Install rear propeller shaft. Refer to PR-6, "
Removal and Installa-
tion" .
CAUTION:
Do not impact or damage propeller shaft tube.
3. Install exhaust front tube and center muffler. Refer to EX-3,
"Removal and Installation" .
SCIA3428E
SCIA5310E
Page 238 of 312

AT-238
ON-VEHICLE SERVICE
Revision: 2006 November2007 350Z
INSTALLATION
CAUTION:
After completing installation, check A/T position, A/T fluid leakage and A/T fluid level. Refer to AT- 2 0 6 ,
"Checking of A/T Position" , AT- 1 2 , "Checking A/T Fluid" .
1. Install revolution sensor in transmission case, and then tighten a
revolution sensor mounting blot to the specified torque. Refer to
AT- 2 3 5 , "
COMPONENTS" .
CAUTION:
Do not subject it to impact by dropping or hitting it.
Do not disassemble.
Do not allow metal filings, etc. to get on the sensor's front
edge magnetic area.
Do not place in an area affected by magnetism.
2. Connect revolution sensor connector.
3. Securely fasten revolution sensor harness with clip.
4. Apply recommended sealant (Genuine Anaerobic Liquid Gasket
or equivalent. Refer to GI-45, "
Recommended Chemical Prod-
ucts and Sealants" .) to rear extension assembly as shown in
illustration.
CAUTION:
Completely remove all moisture, oil and old sealant, etc.
from transmission case and rear extension assembly
mounting surfaces.
SCIA3997E
SCIA7524E
SCIA7525E
SCIA8228E