NO.25 ENGINE STALLS WHEN DRIVING AT SLOW SPEED OR STOPPING [SJ6A-EL]

id050307803000

25
Engine stalls when driving at slow speed or stopping
DESCRIPTION
•  Engine stalls when the brake pedal is depressed while driving at low speed or stopping.
POSSIBLE CAUSE
•  The malfunction is in the engine control system (e.g. Fuel injection control, electronic controlled throttle system). Otherwise the TCC circuit.
―  TCC solenoid improper operation
•  Incorrect accelerator pedal position signal
•  Incorrect engine speed signal
•  Incorrect brake switch signal
―  Oil cooler malfunction (Foreign material mixed in ATF)
―  ATF amount is low

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Perform the symptom troubleshooting “NO.10 LOW IDLE/STALLS DURING DECELERATION”.
•  Is the engine control system normal?
Yes
Perform the symptom troubleshooting “NO.24 ENGINE STALLS WHEN SHIFTED TO D OR R POSITION”.
(See NO.24 ENGINE STALLS WHEN SHIFTED TO D OR R POSITION [SJ6A-EL].)
No
Repair or replace the malfunctioning part according to the inspection results.
2
•  Access TCM PID SSLU_C using the M-MDS.
•  Operate the TCC solenoid value by M-MDS simulation function.
•  Does the TCC solenoid value operate properly?
Yes
Go to the next step.
No
Replace the control valve body.
(See CONTROL VALVE BODY REMOVAL [SJ6A-EL].)
(See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)
3
•  Access the following PCM and TCM PIDs using the M-MDS.
PCM PIDs:
―  APP
―  TP_REL
―  ECT
―  BOO
TCM PIDs:
―  TSS
―  OSS
―  VSS
•  Are the PIDs value normal?
Yes
Go to the next step.
No
Inspect and repair suspect PID related part and wiring harness.
4
•  Perform the oil cooler flushing by air blow.
•  Are there any foreign materials from oil cooler?
Yes
Clean the oil cooler and cooler line.
(See OIL COOLER FLUSHING [SJ6A-EL].)
No
Repair the torque converter.
(See TORQUE CONVERTER REMOVAL/INSTALLATION [SJ6A-EL].)
5
•  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. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)