NISSAN TEANA 2008 Service Manual

TM-118
< ECU DIAGNOSIS >[CVT: RE0F09B]
TCM
JCDWM0245GB

TCM
TM-119
< ECU DIAGNOSIS >[CVT: RE0F09B]
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JCDWM0246GB

TM-120
< ECU DIAGNOSIS >[CVT: RE0F09B]
TCM
Fail-safe
INFOID:0000000003849061
The TCM has an electrical fail-safe mode. In this mode TCM operates even if there is an error in a main elec-
tronic control input/output signal circuit.
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid valve, this function controls the CVT to make driving possi-
ble.
JCDWM0247GB

TCM
TM-121
< ECU DIAGNOSIS >[CVT: RE0F09B]
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P Output Speed Sensor (Secondary Speed Sensor)
The shift pattern is changed in accordance with the throttle position when an unexpected signal is sent from
the output speed sensor (secondary speed sensor) to the TCM. The sport mode is inhibited, and the transaxle
is put in “D”.
Input Speed Sensor (Primary Speed Sensor)
The shift pattern is changed in accordance with the throttle position and secondary speed (vehicle speed)
when an unexpected signal is sent from the input speed sensor (primary speed sensor) to the TCM. The sport
mode is inhibited, and the transaxle is put in “D”.
PNP Switch
If an unexpected signal is sent from the PNP switch to the TCM, the transaxle is put in “D”.
CVT Fluid Temperature Sensor
If an unexpected signal is sent from the CVT fluid temperature sensor to the TCM, the gear ratio in use before
receiving the unexpected signal is maintained or the gear ratio is controlled to keep engine speed under 5,000
rpm.
Transmission Fluid Pressure Sensor A (Secondary Pressure Sensor)
 If an unexpected signal is sent from the transmission fluid pressure sensor A (secondary pressure sensor) to
the TCM, the secondary pressure feedback control is stopped and the offset value obtained before the non-
standard condition occurs is used to control line pressure.
 If transmission fluid pressure sensor A (secondary pressure sensor) error signal is inputted to the TCM, sec-
ondary pressure feedback control stops, but line pressure is controlled normally.
Pressure Control Solenoid A (Line Pressure Solenoid Valve)
If an unexpected signal is sent from the solenoid valve to the TCM, the pressure control solenoid A (line pres-
sure solenoid valve) is turned OFF to achieve the maximum fluid pressure.
Pressure Control Solenoid B (Secondary Pressure Solenoid Valve)
If an unexpected signal is sent from the solenoid valve to the TCM, the pressure control solenoid B (secondary
pressure solenoid valve) is turned OFF to achieve the maximum fluid pressure.
Torque Converter Clutch Solenoid Valve
If an unexpected signal is sent from the solenoid valve to the TCM, the torque converter clutch solenoid valve
is turned OFF to cancel the lock-up.
Ste p M oto r
If an unexpected signal is sent from the step motor to the TCM, the step motor coil phases “A” through “D” are
all turned OFF to hold the gear ratio used just before the non-standard condition occurred.
CVT Lock-up Select Solenoid Valve
If an unexpected signal is sent from the solenoid valve to the TCM, the CVT lock-up select solenoid valve is
turned OFF to cancel the lock-up.
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply (for
controlling) from the battery is not supplied to the TCM. Normal status is restored when turning the ignition
switch OFF to ON after the normal power supply.
DTC Inspection Priority ChartINFOID:0000000003849062
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is indicated with other DTCs, start from a diagnosis for “DTC
U1000 CAN COMMUNICATION LINE”. Refer to TM-41
.
DTC IndexINFOID:0000000003849063
NOTE:
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

TM-122
< ECU DIAGNOSIS >[CVT: RE0F09B]
TCM
If DTC “U1000 CAN COMM CIRCUIT” is indicated with other DTCs, start from a diagnosis for “DTC
U1000 CAN COMMUNICATION LINE”. Refer to TM-41
.
 *1: These numbers are prescribed by ISO 15031-6.
 *2: Refer to TM-35, "
Diagnosis Description". DTC
*1
Items
(CONSULT-III screen terms)Reference
MIL*2, “ENGINE” with CON-
SULT-III or GSTCONSULT-III only “TRANS-
MISSION”
— P0615 STARTER RELAY/CIRCTM-42
— P0703 BRAKE SW/CIRCTM-44
P0705 P0705 PNP SW/CIRCTM-47
P0710 P0710 ATF TEMP SEN/CIRCTM-50
P0715 P0715 INPUT SPD SEN/CIRCTM-52
P0720 P0720 VEH SPD SEN/CIR ATTM-55
— P0725 ENGINE SPEED SIGTM-59
— P0730 BELT DAMGTM-60
P0740 P0740 TCC SOLENOID/CIRCTM-62
P0744 P0744 A/T TCC S/V FNCTNTM-64
P0745 P0745 L/PRESS SOL/CIRCTM-66
P0746 P0746 PRS CNT SOL/A FCTNTM-68
P0776 P0776 PRS CNT SOL/B FCTNTM-70
P0778 P0778 PRS CNT SOL/B CIRCTM-72
P0840 P0840 TR PRS SENS/A CIRCTM-74
— P0841 PRESS SEN/FNCTNTM-77
P0845 P0845 TR PRS SENS/B CIRCTM-80
— P0868 SEC/PRESS DOWNTM-83
— P1701 TCM-POWER SUPPLYTM-85
— P1705 TP SEN/CIRC A/TTM-88
— P1722 ESTM VEH SPD SIGTM-89
— P1723 CVT SPD SEN/FNCTNTM-91
— P1726 ELEC TH CONTROLTM-93
P1740 P1740 LU-SLCT SOL/CIRCTM-94
— P1745 L/PRESS CONTROLTM-96
P1777 P1777 STEP MOTR CIRCTM-97
P1778 P1778 STEP MOTR/FNCTM-100
U1000 U1000 CAN COMM CIRCUITTM-41

SYSTEM SYMPTOM
TM-123
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
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SYMPTOM DIAGNOSIS
SYSTEM SYMPTOM
Symptom TableINFOID:0000000003849064
The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.
No. Item Symptom Condition Diagnostic item Reference
1
Shift ShockLarge shock. (“N”→
“D” position)ON vehicle1. Engine idle speedEC-14
2. Engine speed signalTM-59
3. Accelerator pedal position sensorTM-88
4. CVT positionTM-152
5. CVT fluid temperature sensorTM-50
6. CAN communication lineTM-41
7. CVT fluid level and stateTM-142
8. Line pressure testTM-146
9. Torque converter clutch solenoid valveTM-62
10. Lock-up select solenoid valveTM-94
11. PNP switchTM-44
OFF vehicle12. Forward clutch
TM-16813. Control valve
2Large shock. (“N”→
“R” position)ON vehicle1. Engine idle speedEC-14
2. Engine speed signalEC-14
3. Accelerator pedal position sensorTM-88
4. CVT positionTM-152
5. CVT fluid temperature sensorTM-50
6. CAN communication lineTM-41
7. CVT fluid level and stateTM-142
8. Line pressure testTM-146
9. Torque converter clutch solenoid valveTM-62
10. Lock-up select solenoid valveTM-94
11. PNP switchTM-44
OFF vehicle12. Reverse brake
TM-16813. Control valve
3Shock is too large for
lock-up.ON vehicle1. CVT positionTM-152
2. Engine speed signalTM-59
3. CAN communication lineTM-41
4. CVT fluid level and stateTM-142
OFF vehicle5. Torque converterTM-1726. Control valveTM-168

TM-124
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
SYSTEM SYMPTOM
4
Slips/Will
Not EngageVehicle cannot take
off from “D” position.ON vehicle1. CVT fluid level and stateTM-142
2. CVT positionTM-152
3. CAN communication lineTM-41
4. Line pressure testTM-146
5. Stall testTM-144
6. Step motorTM-97
7. Primary speed sensorTM-52
8. Secondary speed sensorTM-55
9. Accelerator pedal position sensorTM-88
10. CVT fluid temperature sensorTM-50
11. Secondary pressure sensorTM-74
12. TCM power supply and groundTM-85
OFF vehicle13. Oil pump assembly
TM-16814. Forward clutch
15. Control valve
16. Parking components
5Vehicle cannot take
off from “R” position.ON vehicle1. CVT fluid level and stateTM-142
2. CVT positionTM-152
3. CAN communication lineTM-41
4. Line pressure testTM-146
5. Stall testTM-144
6. Step motorTM-97
7. Primary speed sensorTM-52
8. Secondary speed sensorTM-55
9. Accelerator pedal position sensorTM-88
10. CVT fluid temperature sensorTM-50
11. Secondary pressure sensorTM-74
12. TCM power supply and groundTM-85
OFF vehicle13. Oil pump assembly
TM-16814. Reverse brake
15. Control valve
16. Parking components No. Item Symptom Condition Diagnostic item Reference

SYSTEM SYMPTOM
TM-125
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
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P6
Slips/Will
Not EngageDoes not lock-up.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve
7Does not hold lock-up
condition.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve No. Item Symptom Condition Diagnostic item Reference

TM-126
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
SYSTEM SYMPTOM
8
Slips/Will
Not EngageLock-up is not re-
leased.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
OFF vehicle8. Torque converterTM-1729. Oil pump assembly
TM-168
10. Control valve
9With selector lever in
“D” position, accelera-
tion is extremely poor.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Stall testTM-144
4. Accelerator pedal position sensorTM-88
5. CAN communication lineTM-41
6. PNP switchTM-44
7. CVT positionTM-152
8. Step motorTM-97
9. Primary speed sensorTM-52
10. Secondary speed sensorTM-55
11. Accelerator pedal position sensorTM-88
12. Primary pressure sensorTM-80
13. Secondary pressure sensorTM-74
14. CVT fluid temperature sensorTM-50
15. TCM power supply and groundTM-85
OFF vehicle16. Torque converterTM-17217. Oil pump assembly
TM-168
18. Forward clutch
19. Control valve No. Item Symptom Condition Diagnostic item Reference

SYSTEM SYMPTOM
TM-127
< SYMPTOM DIAGNOSIS >[CVT: RE0F09B]
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Slips/Will
Not EngageWith selector lever in
“R” position, accelera-
tion is extremely poor.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Stall testTM-144
4. Accelerator pedal position sensorTM-88
5. CAN communication lineTM-41
6. PNP switchTM-44
7. CVT positionTM-152
8. Step motorTM-97
9. Primary speed sensorTM-52
10. Secondary speed sensorTM-55
11. Accelerator pedal position sensorTM-88
12. Primary pressure sensorTM-80
13. Secondary pressure sensorTM-74
14. CVT fluid temperature sensorTM-50
15. TCM power supply and groundTM-85
OFF vehicle16. Torque converterTM-17217. Oil pump assembly
TM-168
18. Reverse brake
19. Control valve
11 Slips at lock-up.ON vehicle1. CVT fluid level and stateTM-142
2. Line pressure testTM-146
3. Engine speed signalTM-59
4. Primary speed sensorTM-52
5. Torque converter clutch solenoid valveTM-62
6. CAN communication lineTM-41
7. Stall testTM-144
8. Step motorTM-97
9. PNP switchTM-44
10. Lock-up select solenoid valveTM-94
11. CVT fluid temperature sensorTM-50
12. Secondary speed sensorTM-55
13. Secondary pressure sensorTM-74
OFF vehicle14. Torque converterTM-17215. Oil pump assembly
TM-168
16. Control valve No. Item Symptom Condition Diagnostic item Reference