A/T Does Not Shift: D->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 D4 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? Vehicle Does Not Creep Forward In D, 2 or 1 Position Vehicle Cannot Be Started From D1

Yes or No?

Yes >> GO TO 2.

No >> Go to "7. Vehicle Does Not Creep Forward In D, 2 Or 1 Position" Vehicle Does Not Creep Forward In D, 2 or 1 Position.


2. CHECK PNP SWITCH CIRCUIT

With CONSULT-II
Does "TCM INPUT SIGNALS" in Data Monitor show damage to PNP switch circuit?







Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?

Yes or No?

Yes >> Check PNP switch circuit. Refer to "P0705; Diagnostic Procedure" P0705.

No >> GO TO 3.


3. CHECK VEHICLE SPEED SENSOR-A/T AND 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)" and "DTC VEHICLE SPEED SENSOR-MTR" Vehicle Speed Sensor MTR P0720

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
Check throttle position sensor. Refer to "DTC P0121 TP SENSOR" P0121.

OK or NG?

OK >> GO TO 5.

NG >> Repair or replace throttle position 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 assembly.
2. Check the following items:
- Shift valve A
- Shift solenoid valve A
- 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 assembly.
2. Check the following items:
- Shift valve A
- Shift solenoid valve A
- Pilot valve
- Pilot filter

3. Disassemble A/T.
4. Check the following items:
- Servo piston assembly
- Brake band
- Oil pump assembly

OK or NG?

OK >> GO TO 7.

NG >> Repair or replace damaged parts.