TROUBLE SYMPTOM DIAGNOSIS CHART


Diagnose the system by referring to the trouble symptom chart and the possible cause chart. Then check, repair or replace if necessary.

Trouble symptom chart



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note Diagnose the system in the order of "Possible cause No.".
Trouble symptom
 Possible cause No.
Select shock
 The select shock is large when the selector lever position is shifted from "N" to "D".
 1 → 5 → 12 → 7 → 2 → 3 → 15 → 8 → 16 → 17
The select shock is large when the selector lever position is shifted from "N" to "R".
 1 → 5 → 12 → 7 → 2 → 3 → 15 → 8 → 16 → 17
The torque converter lock-up shock is large.
 5 → 1 → 7 → 2 → 16 → 15 → 17
Does not slip or not be engaged
 The vehicle does not start at the D range.
 2 → 5 → 7 → 3 → 4 → 9 → 10 → 11 → 1 → 12 → 13 → 14 → 6 → 16 → 17
The vehicle does not start at the R range.
 2 → 5 → 7 → 3 → 4 → 9 → 10 → 11 → 1 → 12 → 13 → 14 → 6 → 16 → 17
Lock-up clutch is not engaged.
 2 → 3 → 1 → 9 → 10 → 15 → 7 → 4 → 8 → 12 → 11 → 13 → 14 → 16 → 17
Lock-up clutch is disengaged.
 2 → 3 → 1 → 9 → 10 → 15 → 7 → 4 → 8 → 12 → 13 → 11 → 14 → 16 → 17
Lock-up clutch is not disengaged.
 2 → 3 → 1 → 9 → 10 → 15 → 7 → 4 → 16 → 17
Cannot be driven at D range, or extremely poor acceleration
 2 → 3 → 4 → 1 → 7 → 8 → 5 → 9 → 10 → 11 → 13 → 14 → 12 → 6 → 16 → 17
Cannot be driven at R range, or extremely poor acceleration
 2 → 3 → 4 → 1 → 7 → 8 → 5 → 9 → 10 → 11 → 13 → 14 → 12 → 6 → 16 → 17
Slips occurs when the lock-up clutch is engaged
 2 → 3 → 1 → 9 → 10 → 15 → 7 → 4 → 8 → 12 → 11 → 13 → 14 → 16 → 17
Others
 The vehicle does not creep.
 2 → 3 → 1 → 8 → 7 → 4 → 5 → 9 → 10 → 11 → 12 → 13 → 14 → 6 → 16 → 17
The vehicle can be driven at any ranges.
 2 → 3 → 8 → 4 → 5 → 9 → 10 → 11 → 1 → 12 → 13 → 14 → 6 → 16 → 17
The vehicle cannot be driven at the D range.
 2 → 3 → 8 → 4 → 5 → 9 → 10 → 11 → 1 → 12 → 13 → 14 → 6 → 16 → 17
The vehicle cannot be driven at the R range.
 2 → 3 → 8 → 4 → 5 → 9 → 10 → 11 → 1 → 12 → 13 → 14 → 6 → 16 → 17
Juddering occurs when the lock-up clutch is engaged
 2 → 1 → 9 → 10 → 11 → 7 → 15 → 16 → 17
Abnormal noise occurs at the D range.
 2 → 1 → 7 → 16 → 17
Abnormal noise occurs at the R range.
 2 → 1 → 7 → 16 → 17
Abnormal noise occurs at the N range.
 2 → 1 → 7 → 16 → 17
The engine brake does not work.
 2 → 5 → 7 → 9 → 10 → 11 → 3 → 1 → 16 → 17
The maximum speed is low.
 2 → 3 → 1 → 7 → 4 → 9 → 10 → 11 → 13 → 14 → 16 → 15 → 17
The vehicle cannot be stationary at P range. Or the parking mechanism cannot be released when the selector lever is moved to another range.
 8 → 5 → 17
Drive the vehicle at P range.
 8 → 2 → 5 → 16 → 17
Drive the vehicle at N range.
 8 → 2 → 5 → 16 → 17
The engine stalls.
 2 → 1 → 9 → 10 → 15 → 7 → 4 → 13 → 14 → 16 → 17
The engine stalls when the selector lever is shifted from the N range to the D or R range.
 2 → 1 → 9 → 10 → 15 → 7 → 16 → 17

Possible cause chart


Possible cause No.
 Probable cause
 Remedy
1
 Malfunction of the engine system
 Check the engine system, and repair or replace if necessary.
2
 Improper CVT fluid level
 Check the CVT fluid, and repair or replace if necessary. (Refer to )
3
 Not within the standard value of the line pressure
 Check the hydraulic system, and repair or replace if necessary. (Refer to )
4
 Malfunction of torque converter
 Check the torque converter, and repair or replace if necessary. (Refer to )
5
 Malfunction of transmission control cable
 Check the transmission control cable, and repair or replace if necessary. (Refer to )
6
 Malfunction of CVT-ECU power supply system
 Check the CVT-ECU power supply system, and repair or replace if necessary.
7
 Malfunction of the CAN bus line
 Check the CAN bus line, and repair or replace if necessary.
8
 Malfunction of the inhibitor switch
 Check the inhibitor switch, and repair or replace if necessary. (Refer to )
9
 Malfunction of the turbine speed sensor
 Check the turbine speed sensor, and repair or replace if necessary.
10
 Malfunction of the primary pulley speed sensor
 Check the primary pulley speed sensor, and repair or replace if necessary.
11
 Malfunction of the secondary pulley speed sensor
 Check the secondary pulley speed sensor, and repair or replace if necessary.
12
 Malfunction of the CVT fluid temperature sensor
 Check the CVT fluid temperature sensor, and repair or replace if necessary. (Refer to )
13
 Malfunction of the primary pressure sensor
 Replace the valve body assembly. (Refer to )
14
 Malfunction of the secondary pressure sensor
15
 Malfunction of the lock-up solenoid valve
16
 Malfunction of the valve body assembly
17
 Malfunction of the CVT assembly
 Replace the CVT assembly.

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