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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 HAS BEEN RECORDED
• Has FREEZE FRAME DATA 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 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 repair information availability.
• Is any related repair information available?
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Yes
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Perform 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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IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P0140 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 troubleshooting procedures for DTC on FREEZE FRAME DATA.
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4
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VERIFY CURRENT INPUT SIGNAL STATUS
• Warm up engine.
• Access O2S11 PID using the WDS or equivalent.
• Verify PID while racing engine in NEUTRAL.
• Is PID normal?
- Less than 1 mA when suddenly depressing accelerator pedal (rich condition)
- More than 1 mA just after releasing the accelerator pedal (lean condition)
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Yes
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Go to step 9.
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No
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Go to the next step.
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5
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INSPECT INSTALLATION OF A/F SENSOR
• Inspect if the A/F sensor is loosely installed.
• Is the sensor installed securely?
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Yes
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Go to the next step.
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No
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Install the sensor securely, then go to Step 11.
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6
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INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM
• Visually inspect if there is any gas leakage between the exhaust manifold and A/F sensor.
• Is there gas leakage?
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Yes
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Repair or replace any malfunctioning exhaust part, then go to Step 11.
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No
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Go to the next step.
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7
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INSPECT A/F SENSOR CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between the following terminals:
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- A/F sensor terminal A (wiring harness-side) and PCM terminal 93 (wiring harness-side)
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- A/F sensor terminal B (wiring harness-side) and PCM terminal 85 (wiring harness-side)
• Are there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness for open circuit, then go to Step 11.
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8
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INSPECT A/F SENSOR CIRCUIT FOR SHORT TO GROUND
• Inspect for continuity between the following terminals:
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- A/F sensor terminal A (wiring harness-side) and body ground
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- A/F sensor terminal B (wiring harness-side) and body ground
• Are there continuity?
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Yes
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Repair or replace the wiring harness for short to ground, 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 SEALING OF ENGINE COOLANT PASSAGE
• Perform the ENGINE COOLANT LEAKAGE INSPECTION.
• Is there any malfunction?
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Yes
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Repair or replace the malfunctioning part according to inspection results, 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 ENGINE COMPRESSION
• Inspect the engine compression.
• Is it normal?
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Yes
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Go to the next step.
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No
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Perform engine overhaul for repairs, then go to the next step.
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11
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VERIFY TROUBLESHOOTING OF DTC P0140 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the engine switch to the ON position (Engine off).
• Clear the DTC from memory using the WDS or equivalent.
• Start the engine.
• Perform the Repair Verification Drive Mode.
• 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".
• Are any DTC present?
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Yes
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Go to the applicable DTC troubleshooting.
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No
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Troubleshooting completed.
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