ADVANCED KEYLESS ENTRY SYSTEM DOES NOT OPERATE [SECURITY AND LOCKS]


id0903k7012100

Description
•  Door or fuel-filler lid cannot be locked/unlocked using request switch
•  Trunk lid does not open even if trunk lid opener switch is pressed
•  Door or fuel-filler lid cannot be locked/unlocked using remote transmitter
•  Trunk lid does not open even if using remote transmitter
Possible Causes
•  Remote transmitter is in power-saving function
•  Battery used for remote transmitter is not effective
―  Battery other than CR2025 is used (With remote transmitter type A)
―  Battery other than CR2032 is used (With remote transmitter type B)
―  Battery is inserted in opposite direction
―  Battery voltage is low
•  Trunk lid opener switch malfunction
•  Trunk lid release actuator malfunction
•  Trunk lid latch switch malfunction
•  Open circuit in wiring harness between the following terminals:
―  BCM terminal 2S and trunk lid opener switch terminal A
―  LF control unit terminal A and request switch (RF) terminal D
―  LF control unit terminal C and request switch (LF) terminal D
―  Start stop unit terminal 1P and door lock link switch (driver's side) terminal J (R.H.D.)/ D (L.H.D.)
―  Start stop unit terminal 1AF and ground
―  Start stop unit terminal 2A and ground
―  Start stop unit terminal 2B and ground
•  Short to ground in wiring harness between start stop unit terminal 1P and door lock link switch (driver's side) terminal J (R.H.D.)/ D (L.H.D.)
•  Connector poor contact or terminal damage
•  Customer's mis-operation or misunderstanding


Diagnostic Procedure

Step

Inspection

Action

1
VERIFY THAT OPERATION INDICATOR LIGHT TURNS ON WHEN REMOTE TRANSMITTER BUTTON IS USED
•  Does the operation indicator light turn on?
Yes
Go to Step 4.
No
Go to the next step.
2
VERIFY IF PROBLEM IS DUE TO REMOTE TRANSMITTER POWER SAVING FUNCTION
•  Turn off the power saving function.
•  Does the operation indicator light turn on?
Yes
Perform the repair completion verification.
No
Go to the next step.
3
VERIFY BATTERY USED FOR REMOTE TRANSMITTER
•  Is any of the following conditions met?
―  Battery other than CR2025 is used (With remote transmitter type A)
―  Battery other than CR2032 is used (With remote transmitter type B)
―  Battery is inserted in opposite direction
―  Battery voltage is low
Yes
Replace the remote transmitter battery and perform the repair completion verification.
No
Replace the remote transmitter and perform the repair completion verification.
4
DETERMINE IF MALFUNCTION CAUSE IS DOOR/ FUEL-FILLER LID LOCK
•  Refer to “door lock does not operate” or “fuel-filler lid lock does not operate” symptom troubleshooting and perform the inspection.
•  Is the advanced keyless entry system operating normally?
Yes
Troubleshooting completed.
(Explain the contents of the servicing to the customer.)
No
Go to the next step.
5
VERIFY IF MALFUNCTION CAUSE IS OPERATION OTHER THAN OPERATION PERMISSION CONDITION
•  Verify the advanced keyless operation by operating each request switch and the trunk lid opener switch with all the following conditions met.
―  All doors and trunk lid closed
―  Ignition switched off
―  Remote transmitter is within reception area (80 cm radius from driver's door, passenger's door, and trunk lid)
•  Is the advanced keyless entry system operating normally?
Yes
System is normal.
(Explain to customer about operation range of advanced keyless entry system)
No
Go to the next step.
6
VERIFY IF MALFUNCTION CAUSE IS EXTRINSIC NOISE
•  Ask the customer malfunction condition.
•  Does the malfunction occur at the specified place where extrinsic noise is received such as a TV tower, electric power station, or a broadcast station?
Yes
System is normal.
(Explain the customer that operation cannot be performed caused by extrinsic noise.)
No
Go to the next step.
7
VERIFY MALFUNCTION SYMPTOM
•  Does the trunk lid open using the trunk lid opener switch operation?
Yes
Go to Step 10.
(The trunk lid latch system is normal.)
No
Go to the next step.
8
INSPECT TRUNK LID OPENER SWITCH-RELATED WIRING HARNESS (OPEN CIRCUIT)
•  Disconnect the negative battery terminal.
•  Disconnect the BCM and trunk lid opener switch connector.
•  Inspect for continuity between the following terminals (vehicle wiring harness).
―  Trunk lid opener switch terminal A and BCM terminal 2S
•  Is there continuity?
Yes
Go to the next step.
No
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  Trunk lid opener switch terminal A and BCM terminal 2S
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
•  Go to Step 15.
9
INSPECT TRUNK LID OPENER SWITCH
•  Inspect the trunk lid opener switch.
•  Is the trunk lid opener switch normal?
Yes
Note
•  A trunk lid release actuator or trunk lid latch switch malfunction can be considered.
Replace the trunk lid latch and release actuator, then go to Step 15.
No
Replace the trunk lid opener switch, then go to Step 15.
10
VERIFY MALFUNCTION SYMPTOM
•  Connect the negative battery terminal.
•  Verify the lock/unlock operation for all doors, fuel-filler lid and trunk lid using the request switch operation.
•  Is door or fuel-filler lid or trunk lid locked/unlocked?
Yes
Go to Step 15.
No
Go to the next step.
11
INSPECT DOOR LOCK LINK SWITCH-RELATED WIRING HARNESS (OPEN CIRCUIT)
•  Disconnect the negative battery terminal.
•  Disconnect the start stop unit and the door latch and lock actuator (driver's side) connector.
•  Inspect for continuity between the following terminals (vehicle wiring harness).
―  Start stop unit terminal 1P and door lock link switch terminal J (R.H.D.)/ D (L.H.D.)
•  Is there continuity?
Yes
Go to the next step.
No
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  Start stop unit terminal 1P and door lock link switch terminal J (R.H.D.)/ D (L.H.D.)
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
•  Go to Step 15.
12
INSPECT DOOR LOCK LINK SWITCH-RELATED WIRING HARNESS (SHORT TO GROUND)
•  Verify that the start stop unit connector is disconnected.
•  Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground.
―  Start stop unit terminal 1P
•  Is there continuity?
Yes
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  Start stop unit terminal 1P and door lock link switch terminal J (R.H.D.)/ D (L.H.D.)
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an short to ground to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an short to ground.
•  Go to Step 15.
No
Go to the next step.
13
INSPECT START STOP UNIT RELATED WIRING HARNESS (OPEN CIRCUIT)
•  Verify that the start stop unit connector is disconnected.
•  Inspect for continuity between the following terminals (vehicle wiring harness).
―  Start stop unit terminal 1AF and ground
―  Start stop unit terminal 2A and ground
―  Start stop unit terminal 2B and ground
•  Is there continuity?
Yes
Go to the next step.
No
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  Start stop unit terminal 1AF and ground
―  Start stop unit terminal 2A and ground
―  Start stop unit terminal 2B and ground
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
•  Go to Step 15.
14
INSPECT REQUEST SWITCH RELATED WIRING HARNESS (OPEN CIRCUIT)
•  Disconnect the LF control unit and request switch connector.
•  Inspect for continuity between the following terminals (vehicle wiring harness).
―  Request switch (RF) terminal D and LF control unit terminal A
―  Request switch (LF) terminal D and LF control unit terminal C
•  Is there continuity?
Yes
Go to the next step.
No
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  Request switch (RF) terminal D and LF control unit terminal A
―  Request switch (LF) terminal D and LF control unit terminal C
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
•  Go to the next step.
15
VERIFY IF MALFUNCTION CAUSE WAS CORRECTED
•  Does the advanced keyless entry system operate normally?
Yes
Troubleshooting completed.
(Explain the contents of the servicing to the customer.)
No
If the malfunction has not been resolved, repeat the inspection from Step 1.