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DTC P1621 [MZR-CD (RF Turbo)]

BME010200102290

DTC P1621 | Code words do not match after engine cranking
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DETECTION CONDITION | • Code words stored in PCM and immobilizer unit do not match.
POSSIBLE CAUSE | • Immobilizer system reprogram procedure (code word) was not performed correctly after replacing immobilizer unit or PCM

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information availability. • Is any repair information available? | Yes | Perform repair or diagnosis according to available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
2 | VERIFY DTC P1621 DETECTED AGAIN • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Perform the code word reprogram procedure. (See CODE WORD INPUT PROCEDURE.)
No | Go to the next step.
3 | VERIFY TROUBLESHOOTING OF DTC P1603 COMPLETED • 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.
4 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Is there any DTC present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.