| P0653 | EGR throttle valve position sensor circuit or air bypass valve position sensor circuit or CMP sensor circuit or CKP sensor circuit high input |
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DETECTION CONDITION
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• The PCM monitors the input signal from EGR throttle valve position sensor or air bypass valve position sensor or CMP sensor or CKP sensor. If the voltage from EGR throttle valve position sensor or air bypass valve position sensor or CMP sensor or CKP sensor is more than 5.25 V, the PCM determines that there is a malfunction in the EGR throttle valve position sensor circuit or air bypass valve position sensor circuit or CMP sensor circuit or CKP sensor circuit.
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POSSIBLE CAUSE
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• EGR throttle valve position sensor malfunction
• Air bypass valve position sensor malfunction
• CMP sensor malfunction
• CKP sensor malfunction
• Connector or terminal malfunction
• Short to power supply in wiring harness between EGR throttle valve position sensor terminal F and PCM terminal 206
• Short to power supply in wiring harness between air bypass valve position sensor terminal F and PCM terminal 206
• Short to power supply in wiring harness between CMP sensor terminal C and PCM terminal 206
• Short to power supply in wiring harness between CKP sensor terminal C and PCM terminal 218
• PCM malfunction
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Diagnostic procedure
| STEP | INSPECTION | 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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INSPECT AIR BYPASS VALVE POSITION SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the air bypass valve position sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 16.
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No
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Go to the next step.
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4
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INSPECT EGR THROTTLE VALVE POSITION SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the EGR throttle valve position sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 16.
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No
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Go to the next step.
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5
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INSPECT CMP SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the CMP sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 16.
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No
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Go to the next step.
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6
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INSPECT CKP SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the CKP sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 16.
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No
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Go to the next step.
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7
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INSPECT AIR BYPASS VALVE POSITION SENSOR POWER CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between the air bypass valve position sensor terminal F (wiring harness-side) the and body ground.
• Is the voltage more than 5.25 V?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 16.
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No
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Go to the next step.
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8
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INSPECT EGR THROTTLE VALVE POSITION SENSOR POWER CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between the EGR throttle valve position sensor terminal F (wiring harness-side) the and body ground.
• Is the voltage more than 5.25 V?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 16.
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No
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Go to the next step.
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9
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INSPECT CMP SENSOR POWER CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between the CMP sensor terminal C (wiring harness-side) the and body ground.
• Is the voltage more than 5.25 V?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 16.
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No
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Go to the next step.
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10
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INSPECT CKP SENSOR POWER CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between the CKP sensor terminal B (wiring harness-side) the and body ground.
• Is the voltage more than 5.25 V?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 16.
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No
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Go to the next step.
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11
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INSPECT AIR BYPASS VALVE POSITION SENSOR
• Inspect the air bypass valve position sensor.
• Is there any malfunction?
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Yes
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Replace the air by pass valve, then go to Step 16.
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No
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Go to the next step.
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12
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INSPECT EGR THROTTLE VALVE POSITION SENSOR
• Inspect the EGR throttle valve position sensor.
• Is there any malfunction?
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Yes
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Replace the intake throttle valve, then go to Step 16.
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No
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Go to the next step.
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13
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INSPECT CMP SENSOR
• Inspect the CMP sensor.
• Is there any malfunction?
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Yes
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Replace the CMP sensor, then go to Step 16.
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No
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Go to the next step.
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14
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INSPECT CKP SENSOR
• Inspect the CKP sensor.
• Is there any malfunction?
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Yes
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Replace the CKP sensor, then go to Step 16.
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No
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Go to the next step.
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15
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INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to the next step.
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No
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Go to the next step.
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16
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VERIFY TROUBLESHOOTING OF DTC P0653 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Is the same 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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17
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VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
• 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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DTC troubleshooting completed.
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