Diagnosis System
WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
- DIAGNOSIS FUNCTION
- The diagnosis function makes the master warning light and the multi-information display come on, and the CRUISE main indicator light blinks as shown in the illustration. When a malfunction occurs in the dynamic laser cruise control system, the DTCs are stored in the ECM.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
Since the stored data in the ECM is erased by disconnecting the EFI and ETCS fuses or the battery terminal, do not disconnect them until the inspection has been completed.
- The diagnosis function makes the master warning light and the multi-information display come on, and the CRUISE main indicator light blinks as shown in the illustration. When a malfunction occurs in the dynamic laser cruise control system, the DTCs are stored in the ECM.
- DESCRIPTION
- The ECM controls the dynamic laser cruise control system of the vehicle. The data and DTCs relating to the dynamic laser cruise control system can be read from the DLC3 of the vehicle. If the CRUISE main indicator light does not come on after the DTC check, there may be a problem with either the combination meter or the CAN communication systems. Use the Techstream to check and solve the problem.
- CHECK DLC3
- Check the DLC3 (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).
- CHECK INDICATOR
- Turn the ignition switch to ON.
- Check that the CRUISE main indicator light and READY indicator light come on when the cruise control main switch is turned on, and that the indicator lights go off when the main switch is turned off.
HINT:
- If the indicator check result shows a problem, proceed to troubleshooting for the combination meter section.
- If a malfunction occurs in the vehicle speed sensors, the stop light switch, or other related parts during cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and blinks the CRUISE main indicator light. This indicator light informs the driver of the malfunction. At the same time, the malfunction is stored as a diagnostic trouble code.