NO.5 NO CREEP AT ALL [FN4A-EL]


id050301801000

5
No creep at all
DESCRIPTION
•  Vehicle does not move in D, S, L ranges, and R position when idling on flat paved road.
POSSIBLE CAUSE
•  Either transaxle is stuck in 3GR or 4GR position, or clutch circuit slippage due to a stuck 3–4 clutch is stuck.
1.  Clutch slippage, burned
•  Line pressure low
•  Shift solenoid D 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.  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 is malfunction
3.  The engine torque is not start
•  Torque converter is malfunction
Note
•  Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Diagnostic procedure

STEP

INSPECTION

ACTION

1
Does vehicle creep in any range/position?
Yes
Go to next step.
No
Inspect or adjust selector cable.
2
Check the value at the following PID using the M-MDS.
•  APP
Is PID values okay?
Yes
Go to next step.
No
Repair or replace any defective parts.
3
Disconnect PCM connector.
Is resistance between GND terminal at PCM connector and body GND less than 5.0 ohms?
Yes
Go to next step.
No
Repair open GND circuit.
4
Check LPS PID value.
Is LPS PID value okay?
Yes
Go to the next step.
No
Repair or replace any defective parts.
5
Perform the stall test.
Is the stall speed normal?
Yes
Overhaul the control valve body and repair or replace any malfunctioning parts.
(See ATX workshop manual (FN4A-EL).)
If any problem remains, overhaul the transaxle and repair or replace any malfunctioning parts.
(See ATX workshop manual (FN4A-EL).)
No
Replace the torque converter.
(See ATX workshop manual (FN4A-EL).)
6
•  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.