Large Shock "N" To "R" Position

TROUBLE DIAGNOSIS FOR SYMPTOMS

Large Shock "N" --> "R" Position


SYMPTOM:

There is a large shock when changing from "N" to "R" position.

DIAGNOSTIC PROCEDURE


1. CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Automatic Transmission or Automatic Transmission .
Is any malfunction detected by self-diagnostic results?
YES- Check the malfunctioning system. Automatic Transmission or
Automatic Transmission .
NO- GO TO 2.

2. CHECK LINE PRESSURE

Check line pressure at idle with selector lever in "D" position. Automatic Transmission .
OK or NG
OK- GO TO 4.
NG- GO TO 3.

3. DETECT MALFUNCTIONING ITEM

1.Remove control valve assembly. Service and Repair .
2.Check the following items:
-Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
-Line pressure solenoid valve
-Oil pump assembly. Oil Pump .
OK or NG
OK- GO TO 4.
NG- Repair or replace damaged parts.

4. CHECK SYMPTOM

Check again. Automatic Transmission .
OK or NG
OK-INSPECTION END
NG- GO TO 5.

5. CHECK TCM

1.Check TCM input/output signals. Automatic Transmission .
2.If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK-INSPECTION END
NG- Repair or replace damaged parts.