Inspection Procedure 13

INSPECTION PROCEDURE 13: Poor Acceleration

COMMENT

If acceleration is poor when downshifting occurs while driving, a malfunction of the engine system or a brake or clutch may exist.

TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CONDITION:)

- Malfunction of the engine system
- Malfunction of the clutch system and brake system
- Malfunction of the PCM

DIAGNOSIS

STEP 1. Check the engine system.

Inspection Procedure 17.

Inspection Procedure 17.

Q. Is the inspection result good?

YES Go to Step 2.
NO Repair or replace the engine component(s).
STEP 2. Check each brake and clutch.

Perform the torque converter stall test. Refer to Torque Converter Stall Test, Torque Converter Stall Test. Then retest the system.

Q. Is the symptom eliminated?

YES The procedure is complete.
NO Go to Step 3.
STEP 3. Perform the hydraulic pressure test.

Perform the hydraulic pressure test. Refer to Hydraulic Pressure Test, Hydraulic Pressure Test. Then retest the system.

Q. Is the symptom eliminated?

YES The procedure is complete.
NO Go to Step 4.
STEP 4. Check each brake system and each clutch system.

(1)Remove the valve body cover and valve body. Transaxle Disassembly and Assembly Transaxle Transaxle Disassembly and Assembly.





(2)Blow 108 kPa (15 psi) compressed air into the each brake oil orifice and clutch oil orifice of the transaxle case, and check if each brake and each clutch piston move and air pressure is maintained.

Q. Is the air pressure maintained?

YES The procedure is complete.

NO Go to Step 5.

STEP 5. Check each brake system and clutch system.

(1)Remove the transaxle.









(2)Check the facings for seizure and piston seal ring for damage and interference with retainer.
Repair or replace the faulty parts. Transaxle Disassembly and Assembly, Underdrive Clutch and Input Shaft Underdrive Clutch and Input Shaft Disassembly and Assembly, Reverse and Overdrive Clutch Reverse and Overdrive Clutch Disassembly and Assembly Transaxle Transaxle Disassembly and Assembly, Underdrive Clutch and Input Shaft Underdrive Clutch and Input Shaft Disassembly and Assembly, Reverse and Overdrive Clutch Reverse and Overdrive Clutch Disassembly and Assembly. Then retest the system.

Q. Is the symptom eliminated?

YES The procedure is complete.

NO Go to Step 6.

STEP 6. Replace the PCM.

When the PCM is replaced, register the encrypted code. Immobilizer System.

Q. Is the symptom eliminated?

YES The procedure is complete.
NO Start over at Step 1.