P0730

P0730 INCORRECT GEAR RATIO





Description
- TCM detects a high-rpm state of the under drive sun gear.
- The number of revolutions of the under drive sun gear is calculated with the input speed sensor 1 and 2.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

CAUTION:
- " SEE Diagnosis Procedure" must be performed before starting "DTC CONFIRMATION PROCEDURE".
- Never perform "DTC CONFIRMATION PROCEDURE" before completing the repair, which may cause secondary malfunction.
- Always drive vehicle at a safe speed.
1.PRECONDITIONING
If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
- GO TO 2.
2.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select "Self Diagnostic Results" in "ENGINE".
3. Drive vehicle under the similar conditions to (1st trip) Freeze Frame Data for 10 minutes. Refer to the table below.
Hold the accelerator pedal as steady as possible.





With GST
Follow the procedure "With CONSULT-III".
Is "P0730" detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace damaged parts.
2.DETECT MALFUNCTIONING ITEM
Disassemble the A/T assembly to check component parts. Disassembly.
NOTE:
Check the component parts, referring to "Possible cause" in "DTC DETECTION LOGIC". SEE Description SEE DTC Logic SEE Diagnosis Procedure, "DTC Logic".
Is the inspection result normal?
YES - Replace control valve & TCM. Removal And Installation.
NO - Repair or replace damaged parts.