NO.2 VEHICLE MOVES IN N POSITION [SJ6A-EL]


id050307800700

2

Vehicle moves in N position

DESCRIPTION

• Vehicle creeps in N position.
• Vehicle creeps if brake pedal is not depressed in N position.

POSSIBLE CAUSE

• If the vehicle moves in N position, basically, the malfunction is in the AT. Since a malfunction in the sensor circuit or output circuit is the cause of the malfunction in the AT, inspect the sensors, output circuit, and the related wiring harnesses.
- Clutch burnt (C1 clutch, C4 clutch, One-way clutch)
• Line pressure low
• Shift solenoid B malfunction
• Shift solenoid C malfunction
• Shift solenoid E malfunction
• Shift solenoid G malfunction
• Control valve body malfunction
- Selector lever position disparity (Although the selector indicator shows N position, the hydraulic circuit shows D range or R position)
• TR switch mis-adjustment
Note
• Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See BASIC INSPECTION [SJ6A-EL].)

Diagnostic procedure

STEP

INSPECTION

ACTION

1
• Does the vehicle creep when selector lever is moved slightly in N position?
Yes
Go to the next step.
No
Inspect and adjust the selector lever and TR switch.
2
• Inspect following solenoid.
- Shift solenoid B
- Shift solenoid C
- Shift solenoid E
- Shift solenoid G
• Are these solenoids normal?
Yes
Replace the AT (clutch slippage, worm).
No
Inspect the coupler component.
If normal, replace the control valve body.
3
• Verify test results.
- If normal, return to the diagnostic index to service any additional symptoms.
- If malfunction remains, inspect the related Service Information and perform repair or diagnosis.
• If the vehicle is repaired, troubleshooting completed.
• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.