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STEP
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INSPECTION
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ACTION
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1
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VERIFY DTC USING SST
• Does SST (WDS or equivalent) indicate DTC B1600?
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Yes
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Go to Step 3.
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No
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Go to next step.
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2
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VERIFY DTC USING SST
• Does SST (WDS or equivalent) indicate DTC B2431?
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Yes
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Go to SECURITY LIGHT: DTC 13 (WDS OR EQUIVALENT: B2431).
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No
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Go to next step.
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3
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VERIFY VALID KEY
• Is there any key, other than the one that caused displayed DTC, which can start the engine?
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Yes
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Go to Step 5.
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No
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Go to next step.
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4
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VERIFY WHETHER MALFUNCTION IS IN COIL ANTENNA OR KEY
• Using SST (WDS or equivalent) register an additional key.
• Using registered key, turn ignition switch to ON position.
• Does SST (WDS or equivalent) indicate DTC B1600 again?
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Yes
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Replace coil antenna, then go to step 6.
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No
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• Dispose of defective key.
• Duplicate key if necessary.
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5
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VERIFY WHETHER MALFUNCTION IS IN COIL ANTENNA OR KEY
• Using any other valid key, turn ignition switch to ON position.
• Does SST (WDS or equivalent) indicate DTC B1600 again?
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Yes
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Replace coil antenna, then go to next step.
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No
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• Dispose of defective key.
• Duplicate key if necessary.
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6
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INSPECT PCM
• Using registered key, turn ignition switch to ON position.
• Does SST (WDS or equivalent) indicate DTC B1600 again?
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Yes
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Replace PCM and reprogram immobilizer system.
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No
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Troubleshooting is completed.
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