Diagnostic procedure

DTC P2401 - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for 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.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE OR STORED DTCS Turn key to OFF then ON (Engine off). Verify related pending code or stored DTCs. Is other DTCs present?	Yes	Go to appropriate DTC inspection. (See DTC P2405 )
3		No	Go to the next step.
4	INSPECT POOR CONNECTION OF EVAP SYSTEM LEAK DETECTION PUMP CONNECTOR Turn the ignition switch off. Disconnect EVAP system leak detection pump connector. Check for poor connection (damaged, pulled-out pins, corrosion, etc.). Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 10.
4		No	Go to the next step.
5	INSPECT EVAP SYSTEM LEAK DETECTION PUMP MOTOR CIRCUIT FOR OPEN Disconnect main relay. Check continuity between EVAP system leak detection pump terminal A (harness-side) and main relay terminal D (harness-side). Is there continuity?	Yes	Go to the next step.
5		No	Repair or replace harness for open circuit, then go to Step 10.
6	INSPECT POOR CONNECTION OF PCM CONNECTOR Turn the ignition switch off. Disconnect PCM connector. Check for poor connection (damaged, pulled-out pins, corrosion, etc.). Is there any malfunction?	Yes	Repair terminal, then go to Step 10.
6		No	Go to the next step.
7	INSPECT EVAP SYSTEM LEAK DETECTION PUMP MOTOR CIRCUIT FOR SHORT TO GROUND Check continuity between EVAP system leak detection pump terminal D (harness-side) and body ground. Is there continuity?	Yes	Repair or replace harness for short to ground, then go to Step 10.
7		No	Go to the next step.
8	INSPECT EVAP SYSTEM LEAK DETECTION PUMP MOTOR CIRCUIT FOR OPEN CIRCUIT Connect breakout box with PCM connector disconnected. Check continuity between EVAP system leak detection pump terminal D (harness-side) and breakout box terminal 94. Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace harness for open circuit, then go to Step 10.
9	INSPECT EVAP SYSTEM LEAK DETECTION PUMP Perform EVAP system leak detection pump inspection. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK DETECTION PUMP INSPECTION ) Is EVAP system leak detection pump okay?	Yes	Go to the next step.
9		No	Replace EVAP system leak detection pump, then go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P2401 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the WDS or equivalent. Start engine and perform DRIVE MODE except for DRIVE MODE 4. (See OBD-II DRIVE MODE .) Is PENDING CODE for this DTC present?	Yes	Replace PCM, then go to the next step.
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
11		No	Troubleshooting completed.