Keyless Start Control Module Self-Diagnosis Function
Keyless Start Control Module Self-Diagnosis FunctionDescription
Keyless start control module monitors conditions of the system components and its circuit. When an abnormality in the system occurs, keyless start control module controls as follows.
Self-Diagnosis Function
Keyless start control module is equipped with self-diagnosis function that stores DTC for abnormalities detected in keyless start system, immobilizer control system and power window system. Stored DTC is saved until abnormality is corrected.
Warning Function
- When a malfunction of keyless start system and immobilizer control system is detected, keyless start control module makes theft deterrent light or immobilizer indicator light turn on. And, depending on the malfunction, a message is shown in information display to warn the driver.
NOTE:
- When DTC B1194 is detected, immobilizer indicator light stays on until normal condition is judged at least twice in a row.
- Warning function is not shown when a malfunction of the power window system is detected.
- After detecting a malfunction, theft deterrent light and immobilizer indicator light are turned on. However they are turned off when normal condition is judged.
- Refer to the following for details on operation of theft deterrent light and immobilizer indicator light through the warning function.
- Immobilizer control system
- Keyless start system
Fail-Safe Control
Keyless start control module operates fail-safe control when an abnormality related to keyless start system is detected and stops all control in order to protect system. Details of fail-safe control vary depending on the detected DTC.
NOTE: When a malfunction of power window system and immobilizer control system is detected, keyless start control module does not fail-safe control. However, in power window system, each power window switch separately performs fail-safe control to stop AUTO mode.