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 DTC P1676 [MZR-CD (RF Turbo)]

DTC P1676 [MZR-CD (RF Turbo)]


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DTC P1676

Checksum corrupt

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

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.
• 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.
No
Go to the next step.
5
VERIFY AFTER REPAIR PROCEDURE
• Perform "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.