Diagnostic procedure

DTC P2097 (L3) DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED Have FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (Fuel system related) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2	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.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE OR STORED DTC Turn the ignition switch off, then to the ON position (Engine off). Verify the related PENDING CODE or stored DTCs. Is the DTC P2178 or P2188 also present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3] .)
3		No	Go to the next step.
4	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA Is DTC P2097 on FREEZE FRAME DATA?	Yes	Go to the next step.
4		No	Go to FREEZE FRAME DATA DTC inspection. (See DTC TABLE [L3] .)
5	VERIFY CURRENT INPUT SIGNAL STATUS OF HO2S Connect the M-MDS to the DLC-2. Start the engine and warm it up completely. Access O2S12 PID. Read 02S12 PID under following accelerator pedal condition (in NEUTRAL). More than 0.45 V when accelerator pedal is suddenly depressed (rich condition). Less than 0.45 V just after release of accelerator pedal (lean condition) Is the PID normal?	Yes	Go to the next step.
5		No	Visually inspect for the exhaust gas leakage between TWC and HO2S. If there is no leakage, replace HO2S. (See AIR FUEL RATIO (A/F) SENSOR, HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [L3] .) Then go to Step 12.
6	VERIFY CURRENT INPUT SIGNAL STATUS Connect the M-MDS to the DLC-2. Verify the following PIDs: (See PCM INSPECTION [L3] .) APP1 APP2 ECT MAF TP REL VSS Are the PIDs normal?	Yes	Go to the next step.
6		No	Inspect the malfunctioning part according to the inspection results. Then go to Step 12.
7	VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA CONDITION Connect the M-MDS to the DLC-2. Verify the following PIDs under FREEZE FRAME DATA condition. (See PCM INSPECTION [L3] .) APP1 APP2 ECT MAF TPREL VSS Are the PIDs normal?	Yes	Go to the next step.
7		No	Inspect the malfunctioning part according to the inspection results. Then go to Step 12.
8	INSPECT THE A/F SENSOR Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [L3] .) Is the A/F sensor normal?	Yes	Go to the next step.
8		No	Visually inspect for exhaust gas leakage between the exhaust manifold and A/F sensor. If there is no leakage, replace A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR, HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [L3] .) Then go to Step 12.
9	INSPECT FUEL LINE PRESSURE Perform the "FUEL LINE PRESSURE INSPECTION". (See FUEL LINE PRESSURE INSPECTION [L3] .) Is there any malfunction?	Yes	Replace the fuel pump unit, then go to Step 12. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3] .)
9		No	Go to the next step.
10	INSPECT LONG TERM FUEL TRIM Connect the M-MDS to the DLC-2. Access LONGFT1 PID. Compare the LONGFT1 PID with recorded FREEZE FRAME DATA at Step 1. Is the LONGFT1 PID above FREEZE FRAME DATA?	Yes	Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [L3] .) If there is any malfunction, replace the purge valve. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [L3] .) Then go to Step 12.
10		No	Go to the next step.
11	INSPECT ENGINE COMPRESSION Inspect the engine compression. (See COMPRESSION INSPECTION [L3] .) Is there any malfunction?	Yes	Go to the next step.
11		No	Overhaul the engine, then go to the next step.
12	VERIFY TROUBLESHOOTING OF DTC P2097 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. After warming up the engine, maintain the idle status for 1 min or more. Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3] .)
12		No	Go to the next step. c
13	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [L3] .) Are any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3] .)
13		No	Troubleshooting completed.