Procedure 11

11. A/T DOES NOT SHIFT: D3 -> D4

SYMPTOM
The vehicle does not shift up from the Ds to Do gear at the specified speed.
The vehicle does not shift up from the Ds to Do gear unless A/T is warmed up.

DIAGNOSTIC PROCEDURE
1. CHECK CONFIRM THE PROBLEM
Vehicle does not creep forward in "D" position and vehicle cannot be started from D1.
OK or NG
OK >>GO TO 2.
NG >> Refer to "Vehicle Does Not creep Forward In "D" Position", "Vehicle Cannot Be Started From D1".
2. PNP SWITCH CIRCUIT
With CONSULT-II
Does "TCM INPUT SIGNALS" in "DATA MONITOR" show damage to PNP switch circuit?
No Tools
Does self-diagnosis show damage to PNP switch circuit?
Yes or No
Yes >> Check PNP switch circuit.
No >> GO TO 3.
3. CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor.
- Refer to "DTC P0121 ACCELERATOR PEDAL POSITION (APP) SENSOR".
OK or NG
OK >>GO TO 4.
NG >> Repair or replace the accelerator pedal position sensor.
4. CHECK SYMPTOM
Check again.
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
5. CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG?
OK >> INSPECTION END
NG >>
1. Repair or replace damaged parts.
2. Replace the transmission assembly.