A/T Does Not Shift: D1 -> D2 or Does Not Kickdown: D4 -> D2

9. A/T Does Not Shift: D1 -> D2 Or Does Not Kickdown: D4 -> D2

SYMPTOM:
A/T does not shift from D1 to D2 at the specified speed.
A/T does not shift from D1 to D2 when depressing accelerator pedal fully at the specified speed.

1. CHECK SYMPTOM
Are 7. Vehicle Does Not Creep Forward In D, 2 Or 1 Position and 8. Vehicle Cannot Be Started From D1 OK?
Yes or No
Yes >> GO TO 2.
No >> Go to AT-228, 7. Vehicle Does Not Creep Forward In D, 2 Or 1 Position, Vehicle Does Not Creep Forward In D, 2 or 1 Position
AT-230, 8. Vehicle Cannot Be Started From D1. Vehicle Cannot Be Started From D1

2. CHECK CONTROL CABLE





Check control cable. Refer to Control Cable Adjustment.
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to Control Cable Adjustment.

3. CHECK VEHICLE SPEED SENSOR.A/T AND CHECK VEHICLE SPEED SENSOR.MTR CIRCUIT
Check vehicle speed sensor A/T (revolution sensor) and vehicle speed sensor MTR circuit. Refer to DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR), DTC VHCL SPEED SEN MTR VEHICLE SPEED SENSOR MTR.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace vehicle speed sensor A/T (revolution sensor) and vehicle speed sensor MTR circuits.

4. CHECK THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR]





Check throttle position sensor [Accelerator Pedal Position (APP) sensor]. Refer to DTC P0122, P0123 TP SENSOR.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace throttle position sensor [accelerator pedal position (APP) sensor].

5. CHECK A/T FLUID CONDITION





1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.

6. DETECT MALFUNCTIONING ITEM
1. Remove control valve.
2. Check the following items:
- Shift valve A
- Shift valve B
- Shift solenoid valve A
- Shift solenoid valve B
- Pilot valve
- Pilot filter
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.

7. CHECK SYMPTOM
Check again.
OK or NG
OK >> INSPECTION END
NG >>
1. Perform TCM input/output signal inspection. Pinout Values and Diagnostic Parameters
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

8. DETECT MALFUNCTIONING ITEM
1. Remove control valve.
2. Check the following items:
- Shift valve A
- Shift valve B
- Shift solenoid valve A
- Shift solenoid valve B
- Pilot valve
- Pilot filter
3. Disassemble A/T.
4. Check the following items:
- Servo piston assembly
- Brake band
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.