Diagnostic Procedure

DTC P2402 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 online repair information availability. Is any related repair information available?	Yes	Perform repair or diagnostic according to the available repair information. If the vehicle is not repaired, then go to the next step.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE OR STORED DTCS Turn ignition switch to OFF then ON (Engine off). Verify related pending code or stored DTCs. Are other DTCs present?	Yes	Go to appropriate DTC inspection. (See DTC TABLE ).
3		No	Go to the next step.
4	CHECK EVAP SYSTEM LEAK DETECTION PUMP CIRCUIT FOR SHORT TO POWER SUPPLY Turn ignition switch to ON. Disconnect EVAP system leak detection pump connector. Measure voltage between EVAP system leak detection pump terminal D (wiring harness-side) and body ground. Is voltage B+ ?	Yes	Repair or replace wiring harness, then go to the next step.
4		No	Go to the next step.
5	VERIFY TROUBLESHOOTING OF DTC P2402 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the WDS or equivalent. Perform EVAP system test using the WDS or equivalent. (See EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK INSPECTION ). Is the same DTC present? NOTE: If EVAP system test function is not available, take following procedure. Start engine and perform "EVAP System Repair Verification Drive Mode". (See OBD-II DRIVE MODE ). Is PENDING CODE for this DTC present?	Yes	Replace PCM, then go to the next step.
5		No	Go to the next step.
6	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE ). Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
6		No	Troubleshooting completed.