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DTC 21
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Code word/ID number stored in immobilizer unit EEPROM cannot be read.
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|---|---|
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POSSIBLE CAUSE |
• Defective immobilizer unit
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Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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|---|---|---|---|
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-
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INSPECT IMMOBILIZER UNIT
• Turn ignition switch from LOCK position to START position for 2 seconds.
• Does security light indicate DTC 21 again?
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Yes
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Replace immobilizer unit and reprogram immobilizer system.
(See Immobilizer Unit Replacement.)
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No
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Immobilizer system is okay.
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