Inspection Procedure 1: Keyless entry system does not work: Diagnosis
- STEP 1. Using scan tool (M.U.T.-III), DTC check.
Check that ETACS-ECU sets a diagnostic trouble code.
Q: Is the diagnostic trouble code set?
YES : Refer to DIAGNOSTIC TROUBLE CODE CHART .
NO : Go to Step 2.
- STEP 2. Check the power supply circuit.
When the ignition switch is turned to the "LOCK" (OFF) position, check if the hazard warning light illuminate.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Refer to SYMPTOM PROCEDURES ."
- STEP 3. Check the operation of the central door locking system.
Check that the central door locking system works normally.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Refer to DOOR DIAGNOSIS .
- STEP 4. Using scan tool (M.U.T.-III), check data list.
Check for the signals related to the keyless entry system operation.
- Turn the ignition switch to the "LOCK" (OFF) position.
- Remove the ignition key from the ignition key cylinder.
- Close the driver's door.
- Close the front passenger's doors.
- Close the RH-side rear door.
- Close the LH-side rear door.
- Close the liftgate.
Item No. Item name Normal condition 19 Driver's door switch OFF 20 Driver's door unlock switch ON→OFF 21 Driver's door lock switch OFF→ON 28 Steering lock switch OFF 48 Passenger's door switch OFF 49 Rear door switch OFF OK: Normal conditions are displayed for all the items.
Q: Are the check result normal?
YES (Normal conditions are displayed for all the items.) : Go to Step 5.
NO (Normal condition is not displayed for item No. 19.) : Refer to INSPECTION PROCEDURE 5: THE FRONT DOOR SWITCH (DRIVER'S SIDE) SIGNAL IS NOT RECEIVED ".
NO (Normal condition is not displayed for item No. 20, 21.) : Refer to INSPECTION PROCEDURE 4: THE FRONT DOOR LOCK ACTUATOR (DRIVER'S SIDE) SIGNAL IS NOT RECEIVED ".
NO (Normal condition is not displayed for item No. 28.) : Refer to INSPECTION PROCEDURE 3: THE KEY REMINDER SWITCH SIGNAL IS NOT RECEIVED ".
NO (Normal condition is not displayed for item No. 48.):
Refer to INSPECTION PROCEDURE 6 "THE FRONT DOOR SWITCH (PASSENGER'S SIDE) SIGNAL IS NOT RECEIVED ".
NO (Normal condition is not displayed for item No. 49.) : Refer to INSPECTION PROCEDURE 7: ONE OF THE DOOR SWITCH SIGNALS (INCLUDING THE LIFTGATE LATCH SWITCH) IS NOT RECEIVED ".
- STEP 5. Retest the system.
Check the keyless entry system works normally.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
NO : Replace the ETACS-ECU.