INSPECTION PROCEDURE B-6: The speed alarm buzzer does not work. <Vehicles for GCC only>


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in accordance with the vehicle speed signal.
If this function does not work normally, the engine-A/T-ECU or the ETACS-ECU may be defective.

POSSIBLE CAUSES

  • Malfunction of the engine-A/T-ECU
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. ETACS ANALOG data by using the SWS monitor.
Check the ETACS-ECU signal related to the speed alarm buzzer function.

  • Set the simulated vehicle speed at approximately 10km/h.
Item No.
 Item name
 Normal condition
Item 03
 SPEED SENSOR
 8 - 10km/h
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 2.
Refer to inspection procedure P-23 "The vehicle speed signal is not received ."

Step 2. Retest the system.
Check that the speed alarm buzzer works normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.