A/T Does Not Shift: D1 -> D2

A/T Does Not Shift: D1 -> D2

SYMPTOM: The vehicle does not shift-up from the D1 to D2: gear at the specified speed.

DIAGNOSTIC PROCEDURE
1. CONFIRM THE SYMPTOM
Check if vehicle creeps forward in "D" position and vehicle can be started from D1.

OK or NG
OK >> GO TO 2.
NG >> Refer to "Vehicle Does Not Creep Forward In "D" Position", AT-192, "Vehicle Cannot Be Started From D1" Vehicle Cannot Be Started From D1.

2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT-85. "SELF-DIAGNOSTIC RESULT MODE". With Manufacturer's Scan Tool

Do the self-diagnostic results indicate ATF pressure switch 5, direct clutch solenoid valve, accelerator pedal position sensor, vehicle speed sensor A/T (revolution sensor) and vehicle speed sensor MTR?
YES >> Check the malfunctioning system. "DTC P1845 ATF PRESSURE SWITCH 5" P1845, "DTC P1762 DIRECT CLUTCH SOLENOID VALVE" P1762, "DTC P1705 THROTTLE POSITION SENSOR" P1705, "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)" P0720, "DTC P1721 VEHICLE SPEED SENSOR MTR" P1721.
NO >> GO TO 3.

3. CHECK A/T FLUID LEVEL





Check A/T fluid level.

OK or NG
OK >> GO TO 4.
NG >> Refill ATF.

4. CHECK LINE PRESSURE





Check line pressure at the engine stall point.

OK or NG
OK >> GO TO 7.
NG - 1 >> Line pressure high. GO TO 5.
NG - 2 >> Line pressure low. GO TO 6.

5. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM.
2. Disassemble A/T.
3. Check the following items:
^ Oil pump assembly.

OK or NG
OK >> GO TO7.
NG >> Repair or replace damaged parts.

6. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM.
2. Disassemble A/T.
3. Check the following items:
^ Oil pump assembly.
^ Power train system.
^ Transmission case.

OK or NG
OK >> GO TO7.
NG >> Repair or replace damaged parts.

7. CHECK A/T FLUID CONDITION
1. Remove oil pan.





2. Check A/T fluid condition.

OK or NG
OK >> GO TO 8.
NG >> GO TO 11.

8. DETECT MALFUNCTIONING ITEM
^ Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "Symptom Chart" (Symptom No.10) Symptom Chart.

OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.

9. CHECK SYMPTOM
Check again.

OK or NG
OK >> INSPECTION END
NG >> GO TO 10.

10. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT-82, "TCM Input/Output Signal Reference Values" Pinout Values and Diagnostic Parameters.
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.

OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.

11. DETECT MALFUNCTIONING ITEM
^ Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "Symptom Chart" (Symptom No.10) Symptom Chart.

OK or NG
OK >> GO TO9.
NG >> Repair or replace damaged parts.