Diagnostic Trouble Code Identification
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| DTC | Circuit/System Affected |
|---|---|
| 01 | ID Number Unregistered In Immobilizer Unit Input After Engine Cranking |
| 02 | ID Number Format Error (Voltage Range, Frequency) |
| 03 | ID Number Is Not Input Into Immobilizer Unit Until After Engine Cranking |
| 11 | Coil Or Wiring Harness Between Coil Immobilizer Unit Is Open |
| 21 | Code Word/ID Number Memorized In Immobilizer Unit EEPROM Can Not Be Read |
| 24 | Wiring Harness Between PCM & Immobilizer Unit Is Open Or Shorted |
| 30 | PCM - Immobilizer Unit Communication Error |
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| DTC | Circuit/System Affected |
|---|---|
| P1602 | Immobilizer Unit - PCM Communication Error |
| P1603 | Code Word Unregistered In PCM |
| P1604 | Key ID Number Unregistered In PCM |
| DTC P1621 | Code Word Does Not Match After Engine Cranking |
| P1622 | Key ID Number Not Match |
| P1623 | Code Word Or Key ID Read/Write Error In PCM |
| P1624 | Immobilizer System Communication Counter = Zero |