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


id050301801000

5
No creep at all
DESCRIPTION
•  Vehicle does not move in D, M or 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 burnt
•  Line pressure low
•  Shift solenoid A malfunction
•  Shift solenoid B malfunction
•  Shift solenoid C malfunction
•  Shift solenoid D malfunction
•  Pressure control solenoid malfunction
•  Control valve body malfunction
•  Body GND malfunction
2.  Transaxle fixed in 3GR (Operation of fail-safe function)
•  Short or open circuit in wiring
•  Poor connection of connector
•  Malfunction of electronic parts of output and input system
3.  The engine torque is not start
•  Torque converter malfunction
Note
•  Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [PCM (FN4A-EL)].) (See BASIC INSPECTION [FN4A-EL].)

Diagnostic procedure

STEP

INSPECTION

ACTION

1
Does the vehicle creep in any position?
Yes
Go to the next step.
No
Inspect or adjust the selector lever.
2
Inspect the APP PID value using the M-MDS.
Is the PID value normal?
Yes
Go to the next step.
No
Repair or replace any malfunctioning parts.
3
Disconnect the PCM connector.
Measure the resistance between ground terminal at the PCM connector and body ground.
Is the resistance less than 5.0 ohms?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit.
4
Inspect the LPS PID value using the M-MDS.
Is the PID value normal?
Yes
Overhaul the control valve body and repair or replace any malfunctioning parts.
If any problem remains:
•  Overhaul the transaxle and repair or replace any malfunctioning parts.
No
Repair or replace any malfunctioning parts.
5
•  Verify the test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
•  If the vehicle is repaired, troubleshooting is completed.
•  If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.6].)