Automatic Transaxle Diagnosis & Overhaul: Diagnosis Kia Optima I

TESTING

This test measures the maximum engine speed when the selector lever is at the D or R position and the torque converter stalls to test the operation of the torque converter, starter motor and one-way clutch operation and the holding performance of the clutches and brakes in the transmission.

Scheme 35

1. Check the automatic transmission fluid level and temperature and the engine coolant temperature. Fluid level : At the HOT mark on the oil level gauge Fluid temperature : 80-100°C Engine coolant temperature : 80-100°C
2. Check both rear wheels (left and right).
3. Pull the parking brake lever on, with the brake pedal fully depressed.
4. Start the engine.
5. Move the selector lever to the D position, fully depress the accelerator pedal and take a reading of the maximum engine speed at this time. CAUTION: The throttle should not be left fully open for any more than eight seconds. If carrying out the stall test two or more times, move the selector lever to the N position and run the engine at 1,000 r/min. to let the automatic transmission fluid cool down before carrying out subsequent tests. Standard value Stall speed : 2,100-2,900 r/min.
6. Move the selector lever to the R position and carry out the same test again. Standard value Stall speed : 2,100-2,900 r/min.

HI SCAN DIAGNOSTIC TOOL

1. Connect HI-SCAN to the connector for diagnosis.
2. Read the output diagnostic trouble codes. Then follow the remedy procedures according to the "DIAGNOSTIC TROUBLE CODE DESCRIPTION". NOTE: As many a maximum of 8 diagnostic trouble codes (in the sequence of occurrence) can be stored in the Random Access Memory (RAM) incorporated within the control module. The same diagnostic trouble code can be stored as many as one time. If the number of stored diagnostic trouble codes or diagnostic trouble patterns exceeds 8, already stored diagnostic trouble codes will be erased, in sequence beginning with the oldest. Do not disconnect the battery until all diagnostic trouble codes or diagnostic trouble patterns have been read out, because all stored diagnostic trouble codes or diagnostic trouble patterns will be canceled when the battery is disconnected.
3. If the fail-safe system is activated and the transaxle is locked in third gear, the diagnostic trouble code in the fail-safe code description will be stored in the RAM. Three of these diagnostic trouble codes can be stored.
4. The cancellation will occur if, with the transaxle locked in third gear, the ignition key is turned to the OFF position, but the diagnostic trouble code is stored in the RAM.
5. Memorization Up to 8 diagnosis items and 3 fail-safe items can be memorized. If the memory capacity is exceeded, diagnosis and fail-safe items in the memory are overwritten, starting with the oldest. No code can be memorized more than once.
6. Diagnosis Code Deletion. Automatic Deletion All diagnosis codes are deleted from memory the 200th time the ATF temperature reaches 50°C after memorization of the most recent diagnosis code. Forced Deletion. Memorized diagnosis codes can be deleted using the SCAN-TOOL provided the following conditions are satisfied : The ignition switch is ON; There is no detection pulse from the crank angle sensor There is no detection pulse from the output shaft speed sensor There is no detection pulse from the vehicle speed sensor The fail-safe function is not operational

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

INSPECTION

1. Check the detent place for wear.
2. Check the bushing for wear or damage.
3. Check the spring for damage or deterioration.
4. Check the pin at the end of the rod assembly for wear.

Scheme 41

1. Move A/T lever to "P" position to set the key lock cam and the shift lock cam as shown in the illustration. Check that the key lock cam is located at "B" by the detent pin. Check that the shift lock cam is located at "A".
2. Check that the key cylinder is at "LOCK".

Scheme 42

1. Check that each lock cam is as shown in the illustration.
2. Install the shift lock and key lock cable in position. In this case, the shift lock cable must be fixed to the brake pedal and the key lock cable must be fixed to the key cylinder.
3. Temporarily install each cable to the A/T lever assembly as shown in the illustration. Securely insert the cable end into the fixing pin of each cam.
4. Slightly pull the shift lock cable in the direction "E".
5. After checking that the portion of the cable end touches the cable fixing pin, fix with the self-tapping bolt.
6. Slightly push the key lock cam to direction "Q".
7. Slightly pull the key lock cable in the direction "G" to stretch the cable. Then fix the cable with the self-tapping bolt.
8. Check that the key lock and the shift lock cable are secure.