| P022B
P024E |
Air bypass valve position sensor circuit low input |
|---|---|
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DETECTION CONDITION
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• The PCM monitors the Air bypass valve position sensor signal. If the voltage at PCM terminal 233 remains low, the PCM determines that there is a air bypass valve position sensor circuit problem.
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POSSIBLE CAUSE
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• Air bypass valve position sensor malfunction
• Connector or terminal malfunction
• Open circuit in the wiring harness between air bypass valve position sensor terminal F and PCM terminal 206
• Open circuit in the wiring harness between air bypass valve position sensor terminal A and PCM terminal 233
• Short to ground in the wiring harness between air bypass valve position sensor terminal A and PCM terminal 233
• 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 the FREEZE FRAME DATA been recorded?
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Yes
|
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
|
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
|
Go to the next step.
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3
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VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
• Connect the M-MDS to the DLC-2.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
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Yes
|
Go to the next step.
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No
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Intermittent concern exists.
Perform the “INTERMITTENT CONCERNS TROUBLESHOOTING”.
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4
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CLASSIFY MALFUNCTION AS POWER CIRCUIT OR OTHER MALFUNCTION
• Turn the engine switch off.
• Disconnect the air bypass valve connector.
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between air bypass valve position sensor terminal F (wiring harness-side) and body ground.
• Is the voltage approx. 5.0 V?
|
Yes
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Go to Step 8.
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No
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Go to the next step.
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5
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INSPECT AIR BYPASS VALVE POSITION SENSOR POWER CIRCUIT FOR OPEN
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between PCM terminal 206 (wiring harness-side) and body ground.
• Is the voltage 5.0 V?
|
Yes
|
Repair or replace the wiring harness between air bypass valve position sensor terminal F (wiring harness-side) and PCM terminal 206 (wiring harness-side), then go to Step 16.
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No
|
Go to the next step.
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6
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INSPECT AIR BYPASS VALVE POSITION SENSOR POWER CIRCUIT FOR SHORT TO GROUND
• Turn the engine switch off.
• Disconnect the PCM connector.
• Inspect for continuity between the PCM terminal 206 (wiring harness-side) and body ground.
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between air bypass valve position sensor terminal F (wiring harness-side) and PCM terminal 206 (wiring harness-side), 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 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?
|
Yes
|
Repair or replace the terminal, then go to Step 16.
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No
|
Go to Step 16.
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8
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CLASSIFY AIR BYPASS VALVE POSITION SENSOR SIGNAL CIRCUIT MALFUNCTION FOR OPEN OR SHORT TO GROUND
• Turn the engine switch off.
• Connect the air bypass valve connector.
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between air bypass valve position sensor terminal A (wiring harness-side) and body ground.
• Is the voltage between 0.5–4.6 V?
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Yes
|
Go to Step 14.
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No
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Go to the next step.
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9
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INSPECT AIR BYPASS VALVE POSITION SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn the engine switch off.
• Disconnect the air bypass valve position sensor connector.
• Inspect for continuity between the air bypass valve position sensor terminal A (wiring harness-side) and body ground
• Is there continuity?
|
Yes
|
Go to the next step.
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No
|
Go to Step 12.
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10
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INSPECT AIR BYPASS VALVE POSITION SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn the engine switch off.
• Disconnect the PCM connector.
• Inspect for continuity between the PCM terminal 233 (wiring harness-side) and body ground.
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between air bypass valve position sensor terminal A (wiring harness-side) and PCM terminal 233 (wiring harness-side), 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 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
|
Repair or replace the terminal, then go to Step 16.
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No
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Go to Step 16.
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12
|
INSPECT AIR BYPASS VALVE POSITION SENSOR
• Inspect the air bypass valve position sensor.
• Is there any malfunction?
|
Yes
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Replace the air bypass valve position sensor, then go to Step 16.
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No
|
Go to the next step.
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13
|
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?
|
Yes
|
Repair or replace the terminal, then go to Step 16.
|
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No
|
Go to Step 16.
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14
|
CLASSIFY MALFUNCTION AS AIR BYPASS VALVE POSITION SENSOR SIGNAL CIRCUIT OR INSTRUMENT CLUSTER MALFUNCTION
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between PCM terminal 233 (wiring harness-side) and body ground.
• Is the voltage between 0.5–4.6 V?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the wiring harness between air bypass valve position sensor terminal A (wiring harness-side) and PCM terminal 233 (wiring harness-side), then go to Step 16.
|
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|
15
|
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?
|
Yes
|
Repair or replace the terminal, then go to the next step.
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No
|
Go to the next step.
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16
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VERIFY THAT DTC P022B AND/OR P024E TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
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No
|
Go to the next step.
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17
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VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
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Yes
|
Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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