NO.6 LOW MAXIMUM SPEED AND POOR ACCELERATION (EXCEPT FOR GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL]


6	Low maximum speed and poor acceleration
DESCRIPTION	• Vehicle acceleration is poor at start. • Delayed acceleration when accelerator pedal is depressed while driving.
POSSIBLE CAUSE	• If the clutch is stuck or does not stay in 3GR, the malfunction is in engine circuit. 1. Clutch slipped, burned • Line pressure low • Shift solenoid D malfunction • Shift solenoid E malfunction • Shift solenoid A malfunction • Shift solenoid B malfunction • Shift solenoid C malfunction • Pressure control solenoid malfunction • Body GND malfunction • Control valve body malfunction 2. Signal malfunction • Vehicle speed sensor malfunction • Sensor GND malfunction • TP sensor malfunction • Input/turbine speed sensor malfunction 3. Transaxle fixed in 3GR (Operation of fail-safe function) • Short or open circuit in wiring • Poor connection of connector • The electronic parts of output and input system have malfunction 4. Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are normal) • The torque converter have malfunction (Poor operation, stuck) 5. Engagement of TCC operation range (Operation of fail-safe function) • Transaxle fluid temperature sensor malfunction (Short or open circuit) 6. Transaxle fixed in HOLD mode^1 • HOLD switch malfunction^1 7. Transaxle fixed in M range^2 • M range switch malfunction^2 8. TR switch adjustment incorrect Note • Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.


STEP	INSPECTION		ACTION
1	With ignition switch at ON, does HOLD indicator light indication correspond to HOLD switch operation? (4AT) With ignition switch ON, does gear position indicator light indication correspond to selector lever position? (Sport AT)	Yes	Go to next step.
1		No	Go to No.27 "HOLD INDICATOR LIGHT DOES NOT ILLUMINATE WHEN HOLD SWITCH IS TURNED ON.". No.28 "HOLD INDICATOR LIGHT ILLUMINATES WHEN HOLD SWITCH IS NOT TURNED ON." (4AT) Go to No.29 "GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN M RANGE. (SPORT AT)". No.30 "GEAR POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE OR P, N, R POSITION (SPORT AT)." (SPORT AT)
2	Go to No.12 "Lack/loss of power". (See NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [LF, L3].) Does CIS system okay?	Yes	Go to next step.
2		No	Repair or replace any defective parts.
3	Disconnect solenoid connector. Does vehicle operate as follows? *D, S^1 ranges: 3GR (fixed) L^1* range: 1GR (fixed) R position: Reverse	Yes	Go to next step.
3		No	Overhaul control valve body and repair or replace any defective parts. (See ATX workshop manual (FN4A-EL) [1623-10-98E].) If problem remains, overhaul transaxle and repair or replace any defective parts.
4	Drive vehicle in D, S, and L ranges except HOLD mode. Does vehicle start from stop in first gear? (4AT) Drive vehicle in D range. Does vehicle start from stop in first gear? (Sport AT)	Yes	Go to next step.
4		No	Check the value at the following PIDs using the WDS or equivalent. (See PCM INSPECTION [LF, L3].) • TP • VSS • TSS • TR Repair or replace any defective parts.
5	Check the value at the following PIDs using the WDS or equivalent. (See PCM INSPECTION [LF, L3].) • SSA/SS1 • SSB/SS2 • SSC/SS3 Are PID values okay?	Yes	Go to next step.
5		No	Check the value at the following PIDs using the WDS or equivalent. (See PCM INSPECTION [LF, L3].) • TP • VSS • TSS Repair or replace any defective parts.
6	Perform the stall test. (See Stall Test.) Is stall speed okay?	Yes	Reverify symptoms of malfunction.
6		No	Overhaul transaxle and repair or replace any defective parts. (See ATX workshop manual (FN4A-EL) [1623-10-98E].)
7	• Verify test results. - If okay, return to diagnostic index to service any additional symptoms. - If malfunction remains, inspect related Service informations and perform repair or diagnosis. - If vehicle not repaired, trouble shooting completed. - If vehicle not repaired or additional diagnostic information not available, replace PCM.