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NO.1 DOOR CANNOT BE LOCKED/UNLOCKED BY TRANSMITTER (CARD KEY) [ADVANCED KEYLESS SYSTEM]1
Door cannot be locked/unlocked by transmitter (card key)
POSSIBLE CAUSE
Malfunction in transmitter (card key) battery or transmitter (card key)
Malfunction in keyless control module
Malfunction in keyless receiver
Malfunction in BCM
Wrong usage
The after-market electrical parts are interfering with the keyless entry system
Diagnostic procedure
STEP
INSPECTION
ACTION
1
Attempt to lock/unlock the door with the transmitter (card key).
Does the operation indicator light (LED) illuminate?
Yes
Go to the next step.
No
Go to Step 7.
2
Did the customer activate the transmitter (card key) within operative area (Within 2.5 m {8.2 ft} from area around vehicle)?
Yes
Go to the next step.
No
The system is normal. Explain to the customer that the system does not work without the system operative area.
3
Did the customer use the keyless entry system in particular area, such as being near TV towers, power plants, power lines, or factories?
Yes
The system is normal.
Area of operation is subject.
Explain effect of outside interference on the transmitter (card key) to the customer.
No
Go to the next step.
4
Did the customer activate the keyless entry system with the key inserted into the steering lock?
Yes
The system is normal. Explain to the customer that the system does not work with the key inserted into the steering lock.
No
Go to the next step.
5
Are any of the following after-market electrical parts on the vehicle?
Cellular phone
Radio-wave equipment
Remote engine starter
TV
Other
Yes
Go to the next step.
No
Go to Step 7.
6
Disconnect the after-market electrical parts connectors and attempt to lock/unlock the doors with the transmitter (card key).
Does the keyless entry system work?
Yes
The system is normal. The after-market electrical parts are interfering with the keyless entry system.
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 (card key) are updated?
(See CARD KEY ID CODE REGISTRATION[ADVANCED KEYLESS SYSTEM].)
Yes
System is normal. (Explain to the customer that the malfunction occurred because all the transmitter (card key) ID numbers were not updated even though the body control module or a transmitter (card key) was replaced in the previous servicing.)
No
Go to the next step.
10
Visually inspect the transmitter (card key) battery for the following:
(See CARD KEY BATTERY REPLACEMENT[ADVANCED KEYLESS SYSTEM].)
Battery insertion direction (correct polarity)
Battery type (CR2025)
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 (CR2025), 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 the 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 (card key) with a monitor-use battery (normal battery).
(See CARD KEY BATTERY REPLACEMENT[ADVANCED KEYLESS SYSTEM].)
For each transmitter (card key), verify that the transmitter (card key) operation indicator light (LED) illuminates when a button is operated.
Does operation indicator light (LED) for each transmitter (card key) operate?
Yes
Go to the next step.
No
If the operation indicator light (LED) does not illuminate, replace the transmitter (card key), then go to the Step 26.
13
NOTE:
Inspect for all transmitters (card key).
Inspect while the batteries for all of the transmitters (card key) are replaced with monitor-use batteries (normal battery).
Verify the operation of keyless entry system using all of the transmitters (card key).
Does the keyless entry system operate properly?
Yes
Replace the transmitter (card key) battery, and then go to Step 26.
(See CARD KEY BATTERY REPLACEMENT[ADVANCED KEYLESS SYSTEM].)
No
Go to the next step.
14
Inspect for the keyless receiver installation.
Is the bracket securely installed on the keyless receiver?
Yes
Go to the next step.
No
Install the bracket securely, and then go to the next step.
15
Inspect the ground wire on the keyless receiver bracket.
Is the ground wire tighten on the bracket?
Yes
Go to the next step.
No
Tighten the ground wire, then go to the next step.
16
Turn the ignition switch to the LOCK position.
Measure the voltage at keyless receiver terminal A?
Is the voltage B+?
Yes
Go to the next step.
No
Inspect ROOM 15 A fuse.
Inspect and repair the wiring harness between the fuse block and the keyless receiver as necessary.
17
Measure the voltage at keyless receiver terminal E?
Is the voltage 0 V?
Yes
Go to the next step.
No
Inspect and repair the wiring harness between the ground wire and the keyless receiver as necessary.
Re-tighten the ground wire as necessary.
18
Disconnect the keyless receiver connector (6-pin) and keyless control module connector (75-pin).
Is there continuity between the following terminals?
Keyless receiver connector terminal C—keyless control module connector terminal 2U
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.
19
Measure the signal wave pattern of keyless control module terminal 2U using an oscilloscope while the transmitter (card key) is operated with the auxiliary key removed from the ignition key cylinder.
Does the wave pattern change when the transmitter (card 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 26.
20
Measure the voltage at the keyless control module terminals 2B, 2D and 2I.
Terminal 2B: IG1 voltage
Terminal 2D: B+
Terminal 2B: ACC voltage
Is the voltage as above?
Yes
Go to the next step.
No
Inspect for fuse.
Inspect and repair the wiring harness between the keyless control module and the fuse block as necessary.
21
Measure the voltage at keyless control module terminal 2C?
Is the voltage 0 V?
Yes
Go to the next step.
No
Inspect and repair the wiring harness between the ground wire and the keyless control module as necessary.
Re-tighten the ground wire as necessary.
22
Measure the voltage at the keyless control module terminals 2O.
Insert the key into the steering lock: B+
Remove the key from steering lock: 1.0 V or less
Is the voltage as above?
Yes
Go to the next step.
No
Inspect for key reminder switch.
Inspect and repair the wiring harness between the steering lock unit (key reminder switch) and the keyless control module.
23
Measure the signal wave pattern of keyless control module terminal 2R using an oscilloscope while the transmitter (card key) is operated with the auxiliary key removed from the ignition key cylinder.
Does the wave pattern change when the transmitter (card key) is operated?
NOTE:
Perform the oscilloscope setting using 0.5 V/DIV (Y), 100 ms/DIV (X), DC range.
Yes
Replace the keyless control module.
No
Replace the keyless receiver, and then go to next step.
24
Monitor the following PIDs for the BCM using the M-MDS:
DRSW_D (driver-side door switch)
DRSW_P (passenger-side door switch)
DRSW_REAR (rear door switch)
TR/LG_SW (Trunk switch)
Does each monitor value agree with the door open/close condition?
Yes
Inspect for open or short circuit in wiring harness between keyless control module terminal 2R terminal and BCM terminal 7I.
If the wiring harness is not normal, repair or replace malfunctioning part.
If the wiring harness is normal, go to the next step.
No
Inspect door switch for suspect door.
Inspect for open or short circuit in wiring harness between suspect door switch and BCM.
25
Measure the voltage at the BCM terminals 6A, 6B and 6G while operating the transmitter (card key).
Terminal 6B: 1.0 V or less → B+ → 1.0 V or less (Normal lock)
Terminal 6A: 1.0 V or less → B+ → 1.0 V or less (Normal unlock)
Terminal 6G: 1.0 V or less → B+ → 1.0 V or less (2 stage unlock)
Is the voltage as above?
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)
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.
26
Does the keyless entry system operate properly?
Yes
Troubleshooting completed. Explain repairs to the customers
No
Re-inspect the malfunction symptoms, then repeat form Step 1 if malfunction recurs.