Procedure 9

9. A/T DOES NOT SHIFT: D1 -> D2 OR DOES NOT KICK DOWN: D4 -> D2

SYMPTOM
The vehicle does not shift up from the 1st to the 2nd gear at the specified speed, or it does not kick down from the 4th to the 2nd gear even when the accelerator pedal is fully depressed.

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. CHECK 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 SELF-DIAGNOSIS RESULTS
Check vehicle speed sensor A/T (revolution sensor) and vehicle speed sensor MTR circuits.
- Refer to "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)", "DP1721 VEHICLE SPEED SENSOR MTR".
OK or NG
OK >>GO TO 4.
NG >> Repair or replace vehicle speed sensor A/T (revolution sensor) or vehicle speed sensor MTR.
4. 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 5.
NG >> Repair or replace the accelerator pedal position sensor.
5. CHECK SYMPTOM
Check again.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. 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.