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 P2177 or P2187 (with DTC P2195) or P2179 or 2189 (with DTC P2197) also present?
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Yes
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Go to applicable 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 P2195 or P2197 on 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 13.
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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 13.
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7
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INSPECT INTAKE-AIR SYSTEM FOR EXCESSIVE AIR SUCTION
• Visually inspect for looseness, cracks or damage to the hoses in intake-air system.
• Is there any malfunction?
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Yes
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Repair or replace the malfunctioning part, then go to Step 13.
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No
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Go to the next step.
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8
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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 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 13.
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9
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INSPECT HO2S (RF, LF)
• Inspect the HO2S (RF) (with DTC P2195) or the HO2S (LF) (with DTC P2197).
• Is there any malfunction?
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Yes
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Replace the malfunctioning HO2S, then go to Step 13.
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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 INJECTOR
• Inspect the fuel injector for the right bank (with DTC P2195) or the left bank (with DTC P2197).
• Is there any malfunction?
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Yes
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Replace the suspected fuel injector, then go to Step 13.
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No
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Go to the next step.
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11
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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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Go to the next step.
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No
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Go to Step 13.
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12
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INSPECT FUEL SYSTEM FOR FUEL LEAKAGE
• Visually inspect for fuel leakage in the fuel system.
• Is there fuel leakage?
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Yes
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Repair or replace the malfunctioning part, then go to the next step.
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No
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Replace the fuel pump unit, then go to the next step.
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13
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VERIFY TROUBLESHOOTING OF DTC P2195 AND P2197 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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14
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VERIFY AFTER REPAIR PROCEDURE
• Perform "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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