| Mazda P2141 | Intake throttle valve actuator circuit low |
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DETECTION CONDITION
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• The PCM monitors that the intake throttle valve actuator control circuit voltage at the PCM terminal 247. If the PCM terminal 247 voltage is below threshold when the intake throttle operation condition. The PCM determines that intake throttle valve actuator circuit is low.
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POSSIBLE CAUSE
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• Intake throttle malfunction
• Connector or terminal malfunction
• Short to ground circuit in wiring between intake throttle valve actuator terminal C and PCM terminal 247
• Open circuit in wiring between intake throttle valve actuator terminal C and PCM terminal 247
• Open circuit in wiring between intake throttle valve actuator terminal D and PCM control relay terminal E
• 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
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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 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 P2141 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 in FREEZE FRAME DATA.
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4
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INSPECT INTAKE THROTTLE VALVE ACTUATOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the intake throttle valve actuator connector.
• Inspect poor connection (such as damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
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Yes
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Repair or replace terminal, then go to Step 10.
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No
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Go to the next step.
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5
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INSPECT INTAKE THROTTLE VALVE ACTUATOR POWER SUPPLY CIRCUIT FOR OPEN
• Turn the engine switch to the ON position (Engine off).
• Measure voltage between intake throttle valve actuator terminal D (harness-side) and body ground.
• Is the voltage +B?
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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 harness for open, then go to Step 10.
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6
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INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the PCM connector.
• Inspect poor connection (such as damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
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Yes
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Repair or replace terminal, then go to Step 10.
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No
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Go to the next step.
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7
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INSPECT INTAKE THROTTLE VALVE ACTUATOR CONTROL CIRCUIT SHORT TO GROUND
• Inspect continuity between intake throttle valve actuator terminal C (harness-side) and body ground.
• Is there any continuity?
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Yes
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Repair or replace harness for short to ground, then go to Step 10.
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No
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Go to the next step.
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8
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INSPECT INTAKE THROTTLE VALVE ACTUATOR CONTROL CIRCUIT FOR OPEN
• Inspect continuity connector between intake throttle valve actuator terminal C (harness-side) and PCM terminal 247 (harness-side).
• Is there any continuity?
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Yes
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Repair or replace harness for open, then go to Step 10.
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No
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Go to the next step.
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9
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INSPECT INTAKE THROTTLE VALVE ACTUATOR
• Inspect the intake throttle valve actuator.
• Is the intake throttle valve actuator normal?
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Yes
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Intermittent concern exits go to the next step.
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No
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Replace the air pipe (air bypass valve and intake throttle valve component), then go to the next step.
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10
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VERIFY THAT DTC P2141 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine and warm-up to normal operating temperature.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the PENDING CODE same DTC present?
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Yes
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Replace 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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11
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VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
• Is there any DTC 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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