Inspection Procedure 1: Engine Does not Start


COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of inhibitor switch
  • Malfunction of transmission control cable
  • Malfunction of engine system
  • Malfunction of torque converter
  • Malfunction of oil pump
  • Malfunction of the engine-A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code
Either of diagnosis codes P1770 (P0705) or P1771 (P0705) is set, inhibitor switch is defective.

Q. Are diagnosis codes P1770 (P0705) or P1771 (P0705) set?
YES diagnosis code P1770 (P0705) is set : Refer to diagnosis code P1770 (P0705): Inhibitor switch system .
YES diagnosis code P1771 (P0705) is set : Refer to diagnosis code P1771 (P0705): Inhibitor switch system .
Go to Step 2.

STEP 2. Transmission control cable check
Check the transmission control cable and inhibitor switch for installation condition.

Q. Is the check result normal?
Go to Step 3.
Adjust the positions of the transmission control cable and inhibitor switch (Refer to ).

STEP 3. Engine system check

Q. Is the check result normal?
Go to Step 4.
Repair the engine system.

STEP 4. Engine-A/T-ECU replacement
(1)Replace the engine-A/T-ECU.
(2)Test drive the vehicle.
(3)Verify that the condition described by the customer exists.

Q. Does a malfunction take place again?
Go to Step 5.
The inspection is complete.

STEP 5. Torque converter check
Check for damaged drive plate, incorrect installation in the input shaft (inserted at an angle) or damaged splines.

Q. Is the check result normal?
Check the oil pump for incorrect installation, damage and etc., and replace the oil pump assembly if necessary (The oil pump cannot be disassembled).
If repair is possible, repair the damaged part. If repair is not possible because the splines on the drive plate or torque converter are damaged, replace it.