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DTC P1676 [MZR-CD (RF Turbo)]

id0102f1839000

DTC P1676 | Checksum corrupt
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DETECTION CONDITION | • The fuel injector compensation data check sum error. Diagnostic support note • MIL illuminates if PCM detects the above malfunctioning condition in one drive cycle and the DTC has been stored in the PCM. • FREEZE FRAME DATA is available. • DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Fuel injector compensation data does not input properly. • 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 repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY FUEL INJECTOR COMPENSATION DATA INPUTTED PROPERLY • Perform the fuel injector compensation data input procedure. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) • Does the inputted fuel injector compensation data properly? | Yes | Go to the next step.
No | Clear the learning data on PCM. Perform the fuel injector compensation data input procedure again.
4 | VERIFY TROUBLESHOOTING OF DTC P1676 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the engine switch to ON position (engine off). • Clear the DTC from PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
5 | VERIFY AFTER REPAIR PROCEDURE • Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [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.