Symptom Troubleshooting Using Malfunctioning Circuit Functions
If a malfunction occurs in the immobilizer circuit, use the following table below to cross-reference the malfunctioning function to the line(s) that should be checked:
SYMPTOM TROUBLESHOOTING TABLE
| Line error Function |
+B line open | IG1 line open | GND (LG3) line open | IMOCD line open | Immobilizer Indicator line open | Immobilizer Indicator line short |
|---|---|---|---|---|---|---|
| Immobilizer Indicator | No blinking when ignition switch OFF | Does not come on | Does not come on | Blinking | Does not come on | Does not go off |
| Engine start | Possible | Impossible | Impossible | Impossible | Possible | Possible |
| Key registration | Impossible | Impossible | Impossible | Impossible | Possible | Possible |
| Tester communication | Possible | Impossible | Impossible | Possible | Possible | Possible |