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

1	Door cannot be locked/unlocked by transmitter
Possible cause	• Transmitter (advanced key) malfunction (battery or other parts) • Keyless control module malfunction • Keyless receiver malfunction • Customer's miss-operation or misunderstanding • Effect of non-standard equipment (any control unit with built-in micro computer such as radio set, mobile telephone, and TV)

Door cannot be locked/unlocked by transmitter

Possible cause

• Transmitter (advanced key) malfunction (battery or other parts)

• Keyless control module malfunction

• Keyless receiver malfunction

• Customer's miss-operation or misunderstanding

• Effect of non-standard equipment (any control unit with built-in micro computer such as radio set, mobile telephone, and TV)

Step	Inspection	Action
1	• Does the operation indicator light (LED) illuminate when the transmitter (advanced key) is operated?	Yes	Go to the next step.
No	Go to Step 10.
2	• Did the customer activate the transmitter (advanced key) within operative area (Within 1 m {3 ft} from area around vehicle)?	Yes	Go to the next step.
	No	System is normal. (Explain to the customer to operate the transmitter (advanced key) within the operation range.)
3	• Did the customer operate at a place where extrinsic noise is received such as a TV tower, electric power station, or a broadcast station.	Yes	System is normal. (Explain to the customer to operate the transmitter (advanced key) away from extrinsic noise.)
No	Go to the next step.
4	• Did the customer operate the transmitter (advanced key) with all the following conditions met? ― 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. ― The start knob is being pressed.	Yes	Go to the next step.
No	System is normal. (Explain to the customer that the system does not operate due to the cancel function with the auxiliary key in the ignition key cylinder.)
5	• Did the malfunction occur after any non-standard equipment (any control unit with built-in micro computer such as radio set, mobile telephone, and TV) was installed?	Yes	Go to the next step.
No	Go to Step 7.
6	• Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Was the malfunction corrected when the connector of the equipment was disconnected?	Yes	System is normal. (Explain to the customer that noise from the equipment affected the operation.)
No	Go to the next step.
7	• Is there repair record of the customer's keyless entry system?	Yes	Go to the next step.
No	Go to Step 10.
8	• Does the malfunction occur after the repair?	Yes	Go to the next step.
No	Go to Step 10.
9	• Is the malfunction corrected when the ID numbers for all the customer's transmitters (advanced key) are updated? (See ADVANCED KEY ID CODE REGISTRATION [ADVANCED KEYLESS AND START SYSTEM].)	Yes	System is normal. (Explain to the customer that the malfunction occurred because all the transmitter (advanced key) ID numbers were not updated even though the body control module or a transmitter (advanced key) was replaced in the previous servicing.)
No	Go to the next step.
10	• Visually inspect the transmitter (advanced key) battery for the following: (See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].) ― Battery direction (polarity) ― Battery type (CR1620) ― Corrosion, soiling, deformation of battery terminals (plus/minus terminals). ― Contact malfunction between the battery terminal and battery when battery is inserted • Is there any malfunction?	Yes	Battery insertion direction, battery type problem: • Properly install the battery or replace the battery with a specified one (CR1620), then go to the next step. Malfunction with the battery terminals: • Clean corrosion and soiling or repair the terminal, then go to the next step.
No	Go to Step 12.
11	• Does the keyless entry system operate properly?	Yes	Troubleshooting completed.
No	Go to the next step.
12	Note • Use a new monitor battery (normal battery) or one from another vehicle which operates normally. • Replace the battery in all the transmitters (advanced key) with a monitor-use battery (normal battery). (See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].) • Does operation indicator light (LED) for each transmitter (advanced key) operate?	Yes	Go to the next step.
No	If the operation indicator light (LED) does not illuminate, replace the transmitter (advanced key), then go to the Step 24.
13	Note • Inspect for all transmitters (advanced key). • Inspect while the batteries for all of the transmitters (advanced key) are replaced with monitor-use batteries (normal battery). • Verify the operation of keyless entry system using all of the transmitters (advanced key). • Does the keyless entry system operate properly?	Yes	Replace the transmitter (advanced key) battery, and then go to Step 24. (See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].)
No	Go to the next step.
14	• Inspect the keyless receiver installation condition. • Is the bracket installed securely?	Yes	Go to the next step.
No	Install the bracket securely, then go to the next step.
15	• Inspect the keyless receiver. (See KEYLESS RECEIVER INSPECTION [ADVANCED KEYLESS AND START SYSTEM].) • Is the keyless receiver power supply voltage normal? ― Power supply (+B) (terminal D)	Yes	Go to the next step.
No	Inspect for a burnt fuse (ROOM 15 A) Inspect the power supply system wiring harness for an open or short circuit.
16	• Inspect the keyless receiver. • Is the keyless receiver grounded normally? ― Power supply (0 V) (terminal B)	Yes	Go to the next step.
No	Inspect the ground system wiring harness for an open circuit. Inspect the ground tightening screw and nut for looseness.
17	• Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Disconnect the keyless receiver connector (4-pin) and the keyless control module connector (12-pin). • Inspect the wiring harness between the following terminals for an open or short circuit. ― Terminal C (4-pin) to terminal 2H (12-pin) • Is the wiring harness normal?	Yes	Go to the next step.
No	Repair or replace the wiring harness between the keyless receiver connector and keyless control module connector, then go to the next step.
18	• Measure the signal wave pattern of keyless control module terminal 2H using an oscilloscope while the transmitter (advanced key) is operated with the auxiliary key removed from the ignition key cylinder. • Does the wave pattern change when the transmitter (advanced key) 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 Step 24.
19	• Are the following keyless control module power supply voltages normal? ― Power supply (IG1) (Terminal 2C) ― Power supply (+B) (Terminals 1D and 1E) ― Power supply (ACC) (Terminal 2A)	Yes	Go to the next step.
No	Inspect for a burnt fuse (ENG10 A, ROOM15 A, P/W 20 A, MIRROR 7.5 A). Inspect the power supply system wiring harness for an open or short circuit, repair or replace if necessary, then go to the next step.
20	• Is the following keyless control module ground voltage normal? ― 0 V (Terminal 3N)	Yes	Go to the next step.
No	Inspect the ground system wiring harness for an open circuit, then go to the next step.
21	• Inspect the following keyless control module (12-pin, 30-pin) signal voltages with the auxiliary key not in the ignition key cylinder, and the start knob in the LOCK position and not being pressed. ― Keyless switch: 10 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 keyless switch. Inspect the keyless switch system wiring harness for an open or short circuit, then go to the next step.
22	• Monitor the following PIDs for the BCM using the M-MDS: ― DRSW_D (Door latch switch (driver side)) ― DRSW_P (Door latch switch (passenger side)) ― DRSW_RR (Door latch switch (rear door (RH))) ― DRSW_LR (Door latch switch (rear door (LH))) ― TR/LG_SW (Liftgate latch and lock actuator) • Does each monitor value agree with the door open/close condition?	Yes	• Inspect the wiring harness between BCM terminal 6W and keyless control module terminal 2F. ― If there is any open or short circuit, repair or replace the malfunctioning part. ― If there is no malfunction, go to the next step.
No	• Inspect the door latch switch. (See FRONT DOOR LATCH SWITCH INSPECTION.) (See REAR DOOR LATCH SWITCH INSPECTION [5HB].) • Inspect the door latch switch system wiring harness for an open or short circuit, then go to the next step.
23	• Is the signal voltage transmitted from the BCM to the door lock actuator normal? • Does BCM terminal voltage change as follows when locking/unlocking using the transmitter (advanced key)? ― Unlocking: 1.0 V or less→B+→1.0V or less (Terminal 3O) ― Locking (Vehicles with double locking system): 1.0 V or less→B+→1.0 V or less (Terminal 3E) ― Locking (Vehicles without double locking system): 1.0 V or less→B+→1.0 V or less (Terminal 3M)	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 themalfunctioning location. • Wiring harness between BCM and door lock actuator (short circuit) • If 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.) • Then go to the next step.
24	• Does the advanced keyless and start system operate normally?	Yes	Troubleshooting completed.
No	Verify the malfunction, then go to Step 1 if it recurs.

Step

Inspection

Action

• Does the operation indicator light (LED) illuminate when the transmitter (advanced key) is operated?

Yes

Go to the next step.

Go to Step 10.

• Did the customer activate the transmitter (advanced key) within operative area (Within 1 m {3 ft} from area around vehicle)?

Yes

Go to the next step.

System is normal. (Explain to the customer to operate the transmitter (advanced key) within the operation range.)

• Did the customer operate at a place where extrinsic noise is received such as a TV tower, electric power station, or a broadcast station.

Yes

System is normal. (Explain to the customer to operate the transmitter (advanced key) away from extrinsic noise.)

Go to the next step.

• Did the customer operate the transmitter (advanced key) with all the following conditions met?

― 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.

― The start knob is being pressed.

Yes

Go to the next step.

System is normal. (Explain to the customer that the system does not operate due to the cancel function with the auxiliary key in the ignition key cylinder.)

• Did the malfunction occur after any non-standard equipment (any control unit with built-in micro computer such as radio set, mobile telephone, and TV) was installed?

Yes

Go to the next step.

Go to Step 7.

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable.

• Was the malfunction corrected when the connector of the equipment was disconnected?

Yes

System is normal. (Explain to the customer that noise from the equipment affected the operation.)

Go to the next step.

• Is there repair record of the customer's keyless entry system?

Yes

Go to the next step.

Go to Step 10.

• Does the malfunction occur after the repair?

Yes

Go to the next step.

Go to Step 10.

• Is the malfunction corrected when the ID numbers for all the customer's transmitters (advanced key) are updated?

(See ADVANCED KEY ID CODE REGISTRATION [ADVANCED KEYLESS AND START SYSTEM].)

Yes

System is normal. (Explain to the customer that the malfunction occurred because all the transmitter (advanced key) ID numbers were not updated even though the body control module or a transmitter (advanced key) was replaced in the previous servicing.)

Go to the next step.

• Visually inspect the transmitter (advanced key) battery for the following:

(See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].)

― Battery direction (polarity)

― Battery type (CR1620)

― Corrosion, soiling, deformation of battery terminals (plus/minus terminals).

― Contact malfunction between the battery terminal and battery when battery is inserted

• Is there any malfunction?

Yes

Battery insertion direction, battery type problem:

• Properly install the battery or replace the battery with a specified one (CR1620), then go to the next step.

Malfunction with the battery terminals:

• Clean corrosion and soiling or repair the terminal, then go to the next step.

Go to Step 12.

• Does the keyless entry system operate properly?

Yes

Troubleshooting completed.

Go to the next step.

Note

• Use a new monitor battery (normal battery) or one from another vehicle which operates normally.

• Replace the battery in all the transmitters (advanced key) with a monitor-use battery (normal battery).

(See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].)

• Does operation indicator light (LED) for each transmitter (advanced key) operate?

Yes

Go to the next step.

If the operation indicator light (LED) does not illuminate, replace the transmitter (advanced key), then go to the Step 24.

Note

• Inspect for all transmitters (advanced key).

• Inspect while the batteries for all of the transmitters (advanced key) are replaced with monitor-use batteries (normal battery).

• Verify the operation of keyless entry system using all of the transmitters (advanced key).

• Does the keyless entry system operate properly?

Yes

Replace the transmitter (advanced key) battery, and then go to Step 24.

(See ADVANCED KEY BATTERY REPLACEMENT [ADVANCED KEYLESS AND START SYSTEM].)

Go to the next step.

• Inspect the keyless receiver installation condition.

• Is the bracket installed securely?

Yes

Go to the next step.

Install the bracket securely, then go to the next step.

• Inspect the keyless receiver.

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

• Is the keyless receiver power supply voltage normal?

― Power supply (+B) (terminal D)

Yes

Go to the next step.

Inspect for a burnt fuse (ROOM 15 A)

Inspect the power supply system wiring harness for an open or short circuit.

• Inspect the keyless receiver.

• Is the keyless receiver grounded normally?

― Power supply (0 V) (terminal B)

Yes

Go to the next step.

Inspect the ground system wiring harness for an open circuit.

Inspect the ground tightening screw and nut for looseness.

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable.

• Disconnect the keyless receiver connector (4-pin) and the keyless control module connector (12-pin).

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

― Terminal C (4-pin) to terminal 2H (12-pin)

• Is the wiring harness normal?

Yes

Go to the next step.

Repair or replace the wiring harness between the keyless receiver connector and keyless control module connector, then go to the next step.

• Measure the signal wave pattern of keyless control module terminal 2H using an oscilloscope while the transmitter (advanced key) is operated with the auxiliary key removed from the ignition key cylinder.

• Does the wave pattern change when the transmitter (advanced key) 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 Step 24.

• Are the following keyless control module power supply voltages normal?

― Power supply (IG1) (Terminal 2C)

― Power supply (+B) (Terminals 1D and 1E)

― Power supply (ACC) (Terminal 2A)

Yes

Go to the next step.

Inspect for a burnt fuse (ENG10 A, ROOM15 A, P/W 20 A, MIRROR 7.5 A).

Inspect the power supply system wiring harness for an open or short circuit, repair or replace if necessary, then go to the next step.

• Is the following keyless control module ground voltage normal?

― 0 V (Terminal 3N)

Yes

Go to the next step.

Inspect the ground system wiring harness for an open circuit, then go to the next step.

• Inspect the following keyless control module (12-pin, 30-pin) signal voltages with the auxiliary key not in the ignition key cylinder, and the start knob in the LOCK position and not being pressed.

― Keyless switch: 10 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 keyless switch.

Inspect the keyless switch system wiring harness for an open or short circuit, then go to the next step.

• Monitor the following PIDs for the BCM using the M-MDS:

― DRSW_D (Door latch switch (driver side))

― DRSW_P (Door latch switch (passenger side))

― DRSW_RR (Door latch switch (rear door (RH)))

― DRSW_LR (Door latch switch (rear door (LH)))

― TR/LG_SW (Liftgate latch and lock actuator)

• Does each monitor value agree with the door open/close condition?

Yes

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

― If there is any open or short circuit, repair or replace the malfunctioning part.

― If there is no malfunction, go to the next step.

• Inspect the door latch switch.

(See FRONT DOOR LATCH SWITCH INSPECTION.)

(See REAR DOOR LATCH SWITCH INSPECTION [5HB].)

• Inspect the door latch switch system wiring harness for an open or short circuit, then go to the next step.

• Is the signal voltage transmitted from the BCM to the door lock actuator normal?

• Does BCM terminal voltage change as follows when locking/unlocking using the transmitter (advanced key)?

― Unlocking: 1.0 V or less→B+→1.0V or less (Terminal 3O)

― Locking (Vehicles with double locking system): 1.0 V or less→B+→1.0 V or less (Terminal 3E)

― Locking (Vehicles without double locking system): 1.0 V or less→B+→1.0 V or less (Terminal 3M)

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 themalfunctioning location.

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

• If 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.)

• Then go to the next step.

• Does the advanced keyless and start system operate normally?

Yes

Troubleshooting completed.

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