NO.3 ADVANCED KEYLESS ENTRY FUNCTION INOPERATIVE [ADVANCED KEYLESS AND START SYSTEM]

3	Advanced keyless entry function inoperative
Possible cause	• Transmitter (advanced key) malfunction • Keyless control module malfunction • Keyless receiver malfunction • Keyless antenna malfunction • Customer's miss-operation

Advanced keyless entry function inoperative

Possible cause

• Transmitter (advanced key) malfunction

• Keyless control module malfunction

• Keyless receiver malfunction

• Keyless antenna malfunction

• Customer's miss-operation

Step	Inspection	Action
1	• Inspect for any advanced keyless system-related DTCs. (See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].) • Are any DTCs displayed?	Yes	Perform the corresponding DTC troubleshooting.
No	Go to the next step.
2	• Verify the operation method for the request switch and the liftgate opener switch. • Was the operation performed using any front door switch (driver side/passenger side) or the liftgate opener switch?	Yes	Go to the next step.
No	Verify the advanced keyless system operation by pressing each switch. If the system does not operate, go to the next step.
3	• Verify the advanced keyless system operation by operating each request switch and the liftgate opener switch with all the following conditions met. ― The transmitter (advanced key) is outside of the cabin. ― All doors and liftgate are closed. ― The auxiliary key is not inserted in the ignition key cylinder. ― The start knob is in the LOCK position, and not pressed. ― The advanced key is within the reception area (80 cm {31 in} radius from near the driver door, front passenger door, and the liftgate). • Does the advanced keyless entry operate normally?	Yes	System is normal. (Explain the customer about the keyless entry system.)
No	Go to the next step.
4	• Inspect the signal voltages at the following keyless control module connector (30-pin) when the request switches and the liftgate opener switch are pressed. 12 V→1.0 V or less ― Request switch (RF) (Terminal 3U) ― Request switch (LF) (Terminal 3X) 5 V→3.0 V or less ― Liftgate opener switch (Terminal 3G) • Are the signal voltages normal?	Yes	Go to the next step.
No	Inspect the applicable wiring harness between the request switch and the keyless control module for an open or short circuit, then go to the next step.
5	• Inspect the following keyless control connector signal voltages with the auxiliary key not in the ignition switch key cylinder, and the start knob in the LOCK position and not being pressed. ― Keyless switch: 1.0 V or less (Terminal 3W) ― Start knob (push switch): 1.0 V or less (Terminal 3V) ― Power supply (ACC): 1.0 V or less (Terminal 2A) ― Power supply (IG1): 1.0 V or less (Terminal 2C) • Are the signal voltages normal?	Yes	Go to the next step.
No	Inspect the applicable wiring harness between the switch and the keyless control module, repair if necessary, then go to the next step.
6	• Perform the advanced keyless and start system DTC inspection with all the following condition met. ― The start knob is not in the LOCK position. ― The start knob is not pressed. ― All doors and liftgate are closed. ― The auxiliary key is not inserted in the ignition key cylinder. • Perform DTC inspection. (See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].) • Are any DTCs displayed?	Yes	Perform the corresponding DTC troubleshooting.
No	Go to the next step.
7	• Does the operation indicator light (LED) on the transmitter (advanced key) illuminate when any operation using the transmitter (advanced key) is performed?	Yes	Go to the next step.
No	Perform the procedure for symptom troubleshooting NO.1 [DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER [ADVANCED KEYLESS AND START SYSTEM]. (See NO.1 DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER [ADVANCED KEYLESS AND START SYSTEM].)
8	• Inspect the signal wave pattern for the following keyless control module connector using an oscilloscope. ― Keyless antenna (Exterior, RF) (Terminal 3O) ― Keyless antenna (Exterior, LF) (Terminal 3F) ― Keyless antenna (Exterior, rear) (Terminal 3C) ― Keyless antenna (Interior, front) (Terminal 3R) ― Keyless antenna (Interior, rear) (Terminal 3I) • Compare the periods in which the signal wave pattern of the transmitter (advanced key) is within and not within the operable range. • Is the period of the signal wave pattern shorter when the transmitter (advanced key) is not within the operable range? Note • The period of the signal wave pattern when the transmitter (advanced key) is not within the operable range is approx. one-half compared to when it is within the operable range.	Yes	Go to the next step.
No	Inspect the wiring harness between the applicable keyless antenna and keyless control module for an open or short circuit. If the wiring harness is normal: • Repair the applicable keyless antenna, then go to the next step. If the wiring harness is malfunctioning: • Repair or replace the wiring harness, then go to the next step.
9	• Disconnect the keyless receiver connector and keyless control module connector. • Inspect the wiring harness between the following terminals for an open or short circuit. ― Terminal D (4-pin) — Terminal 1D (6-pin) ― Terminal C (4-pin) — Terminal 2H (12-pin) ― Terminal B (4-pin) — GND • Is the wiring harness normal?	Yes	Go to the next step.
No	Inspect and repair the wiring harness between the keyless control module and the keyless receiver, then go to the next step.
10	• Measure the signal wave pattern for keyless control module terminal 2H using an oscilloscope when any of the request switches and the liftgate opener switch are operated. • Does the wave pattern change when the request switch is operated? Note • Perform the oscilloscope setting using 0.5 V/DIV (Y), 100 ms/DIV (X), DC range.	Yes	Go to the next step.
No	Replace the keyless receiver, and then go to next step.
11	• Inspect the wiring harness between BCM terminal 6W and keyless control module terminal 2F. • Is there any open or short circuit?	Yes	Repair or replace the malfunctioning part.
No	Connect the connector, then go to the next step.
12	• Measure the signal voltages at the following BCM connector (16-pin) when each request switch and the liftgate switch are operated. ― Door lock actuator (Vehicles with double locking system) • When the doors are locked (Terminal 3E): 1.0 V or less→B+→1.0 V or less • When the doors are unlocked (Terminal 3O): 1.0 V or less→B+→1.0 V or less ― Door lock actuator (Vehicles without double locking system) • When the doors are locked (Terminal 3M): 1.0 V or less→B+→1.0 V or less • When the doors are unlocked (Terminal 3O): 1.0 V or less→B+→1.0 V or less ― Liftgate opener switch • When the switch is operated with all doors locked: 1.0 V or less→B+→1.0 V or less • Are the voltages normal?	Yes	Inspect the following and repair or replace the malfunctioning location. • Wiring harness between BCM and door lock actuator (open circuit) • Door lock actuator (Short circuit in internal circuit) After inspection and repair, go to the next step.
No	Inspect the following and repair or replace the malfunctioning location. • Wiring harness between BCM and door lock actuator (short circuit) • Door lock actuator (Short circuit in internal circuit) There is no malfunction with the door lock actuator harness (no short circuit in internal circuit) and the door lock actuator, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.) • After inspection and repair, go to the next step.
13	• Does the advanced keyless system operate normally?	Yes	Troubleshooting completed.
No	Verify the malfunction, then go to Step 1 if it recurs.

Step

Inspection

Action

• Inspect for any advanced keyless system-related DTCs.

(See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].)

• Are any DTCs displayed?

Yes

Perform the corresponding DTC troubleshooting.

Go to the next step.

• Verify the operation method for the request switch and the liftgate opener switch.

• Was the operation performed using any front door switch (driver side/passenger side) or the liftgate opener switch?

Yes

Go to the next step.

Verify the advanced keyless system operation by pressing each switch.

If the system does not operate, go to the next step.

• Verify the advanced keyless system operation by operating each request switch and the liftgate opener switch with all the following conditions met.

― The transmitter (advanced key) is outside of the cabin.

― All doors and liftgate are closed.

― The auxiliary key is not inserted in the ignition key cylinder.

― The start knob is in the LOCK position, and not pressed.

― The advanced key is within the reception area (80 cm {31 in} radius from near the driver door, front passenger door, and the liftgate).

• Does the advanced keyless entry operate normally?

Yes

System is normal. (Explain the customer about the keyless entry system.)

Go to the next step.

• Inspect the signal voltages at the following keyless control module connector (30-pin) when the request switches and the liftgate opener switch are pressed.

12 V→1.0 V or less

― Request switch (RF) (Terminal 3U)

― Request switch (LF) (Terminal 3X)

5 V→3.0 V or less

― Liftgate opener switch (Terminal 3G)

• Are the signal voltages normal?

Yes

Go to the next step.

Inspect the applicable wiring harness between the request switch and the keyless control module for an open or short circuit, then go to the next step.

• Inspect the following keyless control connector signal voltages with the auxiliary key not in the ignition switch key cylinder, and the start knob in the LOCK position and not being pressed.

― Keyless switch: 1.0 V or less (Terminal 3W)

― Start knob (push switch): 1.0 V or less (Terminal 3V)

― Power supply (ACC): 1.0 V or less (Terminal 2A)

― Power supply (IG1): 1.0 V or less (Terminal 2C)

• Are the signal voltages normal?

Yes

Go to the next step.

Inspect the applicable wiring harness between the switch and the keyless control module, repair if necessary, then go to the next step.

• Perform the advanced keyless and start system DTC inspection with all the following condition met.

― The start knob is not in the LOCK position.

― The start knob is not pressed.

― All doors and liftgate are closed.

― The auxiliary key is not inserted in the ignition key cylinder.

• Perform DTC inspection.

(See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].)

• Are any DTCs displayed?

Yes

Perform the corresponding DTC troubleshooting.

Go to the next step.

• Does the operation indicator light (LED) on the transmitter (advanced key) illuminate when any operation using the transmitter (advanced key) is performed?

Yes

Go to the next step.

Perform the procedure for symptom troubleshooting NO.1 [DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER [ADVANCED KEYLESS AND START SYSTEM].

(See NO.1 DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER [ADVANCED KEYLESS AND START SYSTEM].)

• Inspect the signal wave pattern for the following keyless control module connector using an oscilloscope.

― Keyless antenna (Exterior, RF) (Terminal 3O)

― Keyless antenna (Exterior, LF) (Terminal 3F)

― Keyless antenna (Exterior, rear) (Terminal 3C)

― Keyless antenna (Interior, front) (Terminal 3R)

― Keyless antenna (Interior, rear) (Terminal 3I)

• Compare the periods in which the signal wave pattern of the transmitter (advanced key) is within and not within the operable range.

• Is the period of the signal wave pattern shorter when the transmitter (advanced key) is not within the operable range?

Note

• The period of the signal wave pattern when the transmitter (advanced key) is not within the operable range is approx. one-half compared to when it is within the operable range.

Yes

Go to the next step.

Inspect the wiring harness between the applicable keyless antenna and keyless control module for an open or short circuit.

If the wiring harness is normal:

• Repair the applicable keyless antenna, then go to the next step.

If the wiring harness is malfunctioning:

• Repair or replace the wiring harness, then go to the next step.

• Disconnect the keyless receiver connector and keyless control module connector.

• Inspect the wiring harness between the following terminals for an open or short circuit.

― Terminal D (4-pin) — Terminal 1D (6-pin)

― Terminal C (4-pin) — Terminal 2H (12-pin)

― Terminal B (4-pin) — GND

• Is the wiring harness normal?

Yes

Go to the next step.

Inspect and repair the wiring harness between the keyless control module and the keyless receiver, then go to the next step.

• Measure the signal wave pattern for keyless control module terminal 2H using an oscilloscope when any of the request switches and the liftgate opener switch are operated.

• Does the wave pattern change when the request switch is operated?

Note

• Perform the oscilloscope setting using 0.5 V/DIV (Y), 100 ms/DIV (X), DC range.

Yes

Go to the next step.

Replace the keyless receiver, and then go to next step.

• Inspect the wiring harness between BCM terminal 6W and keyless control module terminal 2F.

• Is there any open or short circuit?

Yes

Repair or replace the malfunctioning part.

Connect the connector, then go to the next step.

• Measure the signal voltages at the following BCM connector (16-pin) when each request switch and the liftgate switch are operated.

― Door lock actuator (Vehicles with double locking system)

• When the doors are locked (Terminal 3E): 1.0 V or less→B+→1.0 V or less

• When the doors are unlocked (Terminal 3O): 1.0 V or less→B+→1.0 V or less

― Door lock actuator (Vehicles without double locking system)

• When the doors are locked (Terminal 3M): 1.0 V or less→B+→1.0 V or less

• When the doors are unlocked (Terminal 3O): 1.0 V or less→B+→1.0 V or less

― Liftgate opener switch

• When the switch is operated with all doors locked: 1.0 V or less→B+→1.0 V or less

• Are the voltages normal?

Yes

Inspect the following and repair or replace the malfunctioning location.

• Wiring harness between BCM and door lock actuator (open circuit)

• Door lock actuator (Short circuit in internal circuit)

After inspection and repair, go to the next step.

Inspect the following and repair or replace the malfunctioning location.

• Wiring harness between BCM and door lock actuator (short circuit)

• Door lock actuator (Short circuit in internal circuit)

There is no malfunction with the door lock actuator harness (no short circuit in internal circuit) and the door lock actuator, replace the BCM.

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

• After inspection and repair, go to the next step.

• Does the advanced keyless system operate normally?

Yes

Troubleshooting completed.

Verify the malfunction, then go to Step 1 if it recurs.