Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT ATF CONDITION Inspect the ATF condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION .) Is it normal?	Yes	Go to the next step.
2		No	Replace the ATF, then go to Step 10. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT )
3	INSPECT ATF LEVEL Inspect the ATF level. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION .) Is it normal?	Yes	Go to the next step.
3		No	Add ATF to the specified level, then go to Step 10. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION )
4	INSPECT LINE PRESSURE Perform the "Line Pressures Test". (See MECHANICAL SYSTEM TEST .) Is there any malfunction?	Yes	Repair or replace malfunctioning part according to test result, then go to Step 10.
4		No	Go to the next step.
5	INSPECT OIL PRESSURE SWITCH CONNECTOR FOR POOR CONNECTION Switch the ignition OFF. Disconnect the oil pressure switch connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 10.
5		No	Go to the next step.
6	INSPECT OIL PRESSURE SWITCH CIRCUIT FOR SHORT TO GND Switch the ignition OFF. Inspect for continuity between oil pressure switch terminal A (wiring harness-side) and body GND. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to GND, then go to Step 10.
6		No	Go to the next step.
7	INSPECT OIL PRESSURE SWITCH Inspect the oil pressure switch. (See OIL PRESSURE SWITCH INSPECTION .) Is there any malfunction?	Yes	Replace the oil pressure switch, then go to Step 10. (See OIL PRESSURE SWITCH REMOVAL/INSTALLATION .)
7		No	Go to the next step.
8	INSPECT TCM CONNECTOR FOR POOR CONNECTION Switch the ignition OFF. Disconnect the TCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 10.
8		No	Go to the next step.
9	INSPECT OIL PRESSURE SWITCH CIRCUIT FOR OPEN CIRCUIT Switch the ignition OFF. Inspect for continuity between oil pressure switch terminal A (wiring harness-side) and TCM terminal S (wiring harness-side). Is there continuity?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
10	VERIFY DTC TROUBLESHOOTING COMPLETED Make sure to reconnect all the disconnected connectors. Clear the DTC using the M-MDS. Perform the following procedure to ensure that the DTC has been resolved: Drive the vehicle in 1GR for 1 s or more. Drive the vehicle in 2GR for 1 s or more. Drive the vehicle in 3GR for 1 s or more. Drive the vehicle in 4GR for 1 s or more. Drive the vehicle in 5GR for 1 s or more. Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION .)
10		No	Go to the next step.
11	VERIFY NO DTCs ARE PRESENT Perform the "Reading DTCs Procedure". (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION -- AUTOMATIC TRANSAXLE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE .)
11		No	DTC troubleshooting completed.