Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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1
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VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED
• Have FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (HO2S related) been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Information and/or on-line repair information availability.
• Is any related repair information available?
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Yes
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Perform the repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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VERIFY RELATED PENDING CODE OR STORED DTC
• Turn the ignition switch off, then ON (Engine off).
• Verify the related PENDING CODE or stored DTCs.
• Is the DTC P2178 or P2188 (with DTC P2196) or P2180 or P2190 (with DTC P2198) also present?
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Yes
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Go to the appropriate DTC inspection.
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No
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Go to the next step.
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4
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IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P2196 or P2198 in the FREEZE FRAME DATA?
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Yes
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Go to the next step.
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No
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Go to the FREEZE FRAME DATA DTC inspection.
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5
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VERIFY CURRENT INPUT SIGNAL STATUS
• Connect the WDS or equivalent to the DLC-2.
• Verify the following PIDs.
• Are the PIDs normal?
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Yes
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Go to the next step.
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No
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Inspect the malfunctioning part according to the inspection results.
Then go to Step 11.
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6
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VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA CONDITION
• Connect the WDS or equivalent to the DLC-2.
• Verify the following PIDs under the FREEZE FRAME DATA condition.
• Are the PIDs normal?
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Yes
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Go to the next step.
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No
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Inspect the malfunctioning part according to the inspection results.
Then go to Step 11.
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7
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VERIFY CURRENT INPUT SIGNAL STATUS OF MAF SENSOR
• Connect the WDS or equivalent to the DLC-2.
• Start the engine.
• Access the MAF PID.
• Verify that the MAF PID changes quickly according to the engine speed.
• Is the PID normal?
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Yes
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Go to the next step.
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No
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Replace the MAF/IAT sensor, then go to Step 11.
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8
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INSPECT HO2S (RF, LF)
• Inspect the HO2S (RF) (with DTC P2196) or HO2S (LF) (with DTC P2198).
• Is there any malfunction?
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Yes
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Replace HO2S malfunction, then go to Step 11.
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No
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Go to the next step.
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9
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INSPECT FUEL INJECTOR
• Inspect fuel injector for the right bank (with DTC P2196) or the left bank (with DTC P2198).
• Is there any malfunction?
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Yes
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Replace the suspected fuel injector, then go to Step 11.
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No
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Go to the next step.
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10
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INSPECT FUEL LINE PRESSURE
• Perform the "FUEL LINE PRESSURE INSPECTION".
• Is there any malfunction?
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Yes
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Replace the fuel pump unit, then go to the next step.
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No
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Go to the next step.
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11
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VERIFY TROUBLESHOOTING OF DTC P2196 AND P2198 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Run Drive Mode 1 and 3
• Is the PENDING CODE for this DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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12
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VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See AFTER REPAIR PROCEDURE [AJ].)
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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Troubleshooting completed.
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