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DTC P2621 [MZR-CD (RF Turbo)]

id0102f1119100

DTC P2621 | Intake shutter valve position sensor circuit low output
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DETECTION CONDITION | • The PCM monitors the intake shutter valve position sensor circuit voltage while the engine is running. If the PCM detects the circuit voltage is less than 0.2 V, the PCM determines that there is a malfunction in the intake shutter valve position sensor circuit. Diagnostic support note • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Intake shutter valve position sensor malfunction • Connector or terminal malfunction • Short to ground in wiring harness between intake shutter valve position sensor terminal E and PCM terminal 45 • Short to ground in wiring harness between intake shutter valve position sensor terminal F and PCM terminal 86 • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? • Connect the WDS or equivalent to the DLC-2. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". (See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
4 | INSPECT POOR CONNECTION OF INTAKE SHUTTER VALVE POSITION SENSOR VALVE CONNECTOR • Turn the engine switch off. • Inspect for poor connection (such as damaged/pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the suspected terminal, go to Step 8.
No | Go to the next step.
5 | INSPECT INTAKE SHUTTER VALVE POSITION SENSOR CIRCUIT FOR A SHORT TO GROUND • Turn the engine switch off. • Inspect for continuity between the following terminals and body ground: - Intake shutter valve position sensor terminal E. - Intake shutter valve position sensor terminal F. • Is there continuity? | Yes | Repair or replace the wiring harness for a short to ground, go to Step 8.
No | Go to the next step.
6 | INSPECT INTAKE SHUTTER VALVE POSITION SENSOR • Inspect the intake shutter valve position sensor. (See INTAKE SHUTTER VALVE POSITION SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Repair the supply pump, go to Step 8.
No | Go to the next step.
7 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Inspect for poor connection (such as damaged/pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the suspected terminal, go to the next step.
No | Go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P0628 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Replace the PCM, go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.